Continuity of Learning Assignments Grade: 7 th grade Subject: Science Day 11 and 12 Day 13 and 14 Day 15 and 16 Day 17 and 18 Day 19 and 20 Essential Activity Science E.7.9A.1 (Weather vs Climate) • Students need to complete Section 1: What is weather? Reading Essential Activity Science E.7.9A.1 (Weather vs Climate) • Students need to complete Section 2: Weather Patterns Reading Essential Activity Science E.7.9A.1 (Weather vs Climate) • Students need to complete Section 3: Weather Forecasts Reading and Concept Attainment Quiz Worksheet Essential Activity Science E.7.9A.1 (Weather vs Climate)- • Students need to complete Weather Student Worksheets Essential Activity Science E.7.9A.4 (Climate)- • Students need to complete Weather and Climate: What is climate? Passage Extension Science Watch the local weather and complete the weather recording sheet for today. Extension Science Watch the local weather and complete the weather recording sheet for today. Extension Science Watch the local weather and complete the weather recording sheet for today. Extension Science Watch the local weather and complete the weather recording sheet for today. Extension Science Watch the local weather and complete the weather recording sheet for today.
Transcript
Continuity of Learning Assignments
Grade: 7th grade Subject: Science
Day 11 and 12 Day 13 and 14 Day 15 and 16 Day 17 and 18 Day 19 and 20 Essential Activity
Science E.7.9A.1 (Weather vs Climate) • Students need to
complete Section 1: What is weather? Reading
Essential Activity Science E.7.9A.1 (Weather vs Climate) • Students need to
complete Section 2: Weather Patterns Reading
Essential Activity Science E.7.9A.1 (Weather vs Climate) • Students need to
Before You ReadHave you ever flown a kite or watched someone else fly one?On the lines below, describe how the kite moves in the air.
Weather FactorsEverybody talks about the weather. It may seem like small
talk, but weather is very important to some people. Pilots,truck drivers, farmers, and other professionals study theweather because it can affect their jobs.
What is weather?You can look out the window and see that it’s raining, or
snowing, or windy. But do you really know what weather is?Weather is the state of the atmosphere at a specific timeand place. Weather describes conditions such as air pressure,wind, temperature, and moisture content in the air.
How does the Sun affect weather on Earth?The Sun provides almost all of Earth’s energy. Energy
from the Sun evaporates water on Earth. Evaporated waterenters the atmosphere and forms clouds. Later, the waterfalls back to Earth as rain or snow.
The Sun also heats Earth. Heat from the Sun is absorbedby Earth’s surface, which then heats the air above it. Becauseof differences in Earth’s surface, some places in Earth’satmosphere are warmer and other places are cooler. Aircurrents and water currents move the heat to differentplaces around Earth. Weather is the result of heat andEarth’s air and water.
1. Determine When thetemperature is high, howdo air molecules move?
Picture This2. Label one side of the
figure high pressure and oneside low pressure.
What affects temperature?Air is made up of molecules that are always moving
randomly, or without any set pattern, even when there is nowind. Temperature is a measure of the average amount ofmotion of molecules. When the temperature is high, airmolecules move rapidly and it feels warm. When thetemperature is low, air molecules move more slowly and itfeels cold.
What causes wind?Have you ever flown a kite? What do you need in order to
get the kite off the ground and into the air? Kites flybecause air is moving. Air that moves in one direction iscalled wind. The Sun heats Earth unevenly, but wind helpsspread the heat around.
As the Sun warms the air, the air expands and becomesless dense. Warm, expanding air has low atmosphericpressure. Cooler air is denser and sinks, which brings highatmospheric pressure. Wind is the result of air moving fromareas of high pressure to areas of low pressure.
The temperature of air can affect air pressure. When air iscooler, molecules are closer together, creating high pressure.When air is heated, it expands and becomes less dense. Thiscreates lower pressure. Beaches are often windy as a result ofair moving from areas of high pressure to areas of lowerpressure, as shown in the figure below.
What tools are used to measure wind?Some instruments measure wind direction and others
measure wind speed. A wind vane, sometimes seen onhouses or barns, has an arrow that points in the directionfrom which the wind is blowing. A wind sock, another toolthat shows wind direction, has an open end to catch thewind. The wind sock fills and points in the direction towardwhich the wind is blowing.
An anemometer (a nuh MAH muh tur) is an instrumentthat measures wind speed. Anemometers have four opencups that catch the wind and cause the anemometer to spin.The faster the wind blows, the faster the anemometer spins.
What is humidity?Heat evaporates water into the atmosphere. Where does
the water go? Water vapor molecules fit into spaces amongthe molecules that make up air. The amount of water vaporheld in the air is called humidity.
Air does not always hold the same amount of watervapor. More water vapor can be present when the air iswarm than when it its cool. At warm temperatures, themolecules of water vapor in the air move quickly. As aresult, the molecules do not come together easily, as shownon the left in the figure below.
At cooler temperatures, the molecules in air move moreslowly. This slower movement allows the water vapormolecules to stick together. Droplets of liquid water form,as shown on the right in the figure above. This process ofliquid water forming from water vapor is called condensation.If enough water is present in the air for condensation totake place, the air is saturated.
Water vapor molecules
Water droplets
3. Explain Name one toolfor measuring winddirection and tell how itworks.
5. Identify What is thetemperature at whichcondensation forms called?
Picture This6. Interpret Trace the
arrows that show moistwarm air rising.
What is relative humidity?Weather forecasters report the amount of moisture in the
air as relative humidity. Relative humidity is a measure ofthe amount of moisture held in the air compared with theamount of moisture the air can hold at a given temperature.If the weather forecaster says that the relative humidity is 50percent, this means that the air contains 50 percent of thewater needed for the air to be saturated at that temperature.
Dew PointWhen the temperature drops, less water vapor can be
present in the air. If temperatures are low enough, watervapor will condense to a liquid or form ice crystals. Thetemperature at which the air is saturated and condensationforms is the dew point. Dew point changes as the amountof water vapor in the air changes.
You’ve probably seen water droplets form on the outsideof a can of cold soda. The cold can cooled the air around itto its dew point. The water vapor in the air condensed,forming water droplets on the soda can. Something similaroccurs when you see dew. Air near the ground cools to itsdew point, and then water vapor condenses and forms dew. Iftemperatures are near 0° C, frost may form.
Forming CloudsClouds form as warm air is forced upward, expands, and
then cools, as shown in the figure below. When the aircools, the water vapor molecules in the air come togetheraround particles of dust or salt in the air. These tiny waterdroplets are not heavy enough to fall to Earth. So, they staysuspended in the air. Billions of these droplets form a cloud.
8. Determine When acumulus cloud becomes athunderstorm, what is itcalled?
Classifying CloudsClouds are grouped, or classified, by shape and height.
Some clouds are tall and rise high into the sky. Some cloudsare low and flat. Dense clouds can bring snow or rain. Thinclouds usually appear on sunny days. Three main factorsdetermine the shape and height of clouds—temperature,pressure, and the amount of water vapor in the air.
What are the different types of clouds?Stratus clouds are layered in smooth, even sheets across the
sky and may be seen on fair, rainy, or snowy days. Usuallystratus clouds form low in the sky. Fog is a stratus cloud thatforms when air is cooled to its dew point near the ground.
Cumulus (KYEW myuh lus) clouds are large, white, puffyclouds that are often flat on the bottom and sometimestower high into the sky. Cumulous clouds can be seen eitherin fair weather or in thunderstorms.
Cirrus (SIHR us) clouds are thin, white, feathery clouds.They form high in the atmosphere and are made of icecrystals. Although cirrus clouds are linked with fair weather,they sometimes appear before a storm.
How is height used to name clouds?Cloud names are sometimes given prefixes to describe the
height of the cloud base. Three common cloud prefixes arecirro-, alto- and strato-. Cirro- describes high clouds. Alto- isused for clouds that form at middle levels. Strato- is usedfor clouds that form closer to the ground.
Cirrostratus clouds are made of ice crystals and form highin the air. Usually cirrostratus clouds are a sign of fairweather. Sometimes they signal a storm is on the way.Altostratus clouds form at middle levels. If these clouds arenot too thick, sunlight can filter through them.
What types of clouds produce rain and snow?Dark clouds that contain rain or snow are called nimbus
clouds. Nimbus is a Latin word meaning “dark rain cloud.”The water content of nimbus clouds is so high that only alittle sunlight can pass through them.
When a cumulus cloud grows into a thunderstorm, it iscalled a cumulonimbus (kyew myuh loh NIHM bus) cloud.These high clouds can tower almost 18 km. Nimbostratusclouds are layered clouds that usually bring long, steady rainor snowfall.
!B Compare and contrastMake a four-tab Foldable asshown. As you read, take noteson how the four forms ofprecipitation are similar anddifferent.
Rain
Hail
Sleet
Snow
Picture This9. Identify In the figures,
circle the name of each typeof precipitation.
PrecipitationPrecipitation is water falling from clouds. Precipitation
occurs when cloud droplets combine and grow large enoughto fall to Earth. The cloud droplets form around tinyparticles like salt and dust in the air.
Why are some raindrops bigger than others?You have probably noticed that some raindrops are bigger
than others. One reason for this size difference is thestrength of updrafts in a cloud. If strong updrafts of windkeep drops in the air longer, they can combine with otherdrops. As a result, they grow larger.
Another factor which affects raindrop size is the rate ofevaporation as the drop falls to Earth. If the air is dry, theraindrop will get smaller as it falls. Sometimes the raindropwill evaporate completely before it even hits the ground.
How does temperature affect precipitation?Air temperature determines what kind of precipitation
will fall—rain, snow, sleet, or hail. How air temperatureaffects precipitation is shown in the figures below. When theair temperature is above freezing, water falls as rain. If theair temperature is so cold that water vapor changes to asolid, it snows. Sleet forms if raindrops fall through a layerof freezing air near Earth’s surface, forming ice pellets.
During thunderstorms, hail forms in cumulonimbusclouds. Hailstones form when water freezes around tiny cen-ters of ice. Hailstones get larger as they’re tossed up anddown by rising and falling air. Most hailstones are small, butsometimes they can get larger than softballs. Of all formsof precipitation, hail causes the most damage.
1. Review the terms and their definitions in the Mini Glossary. Then write one sentencedescribing today’s weather. Use at least two of the terms.
2. Use these words to fill in the blanks and tell about clouds forming and precipitation:snow, hail, warm moist air, stratus, cumulus, rain, cirrus, sleet, water vapor, clouds
rises, expands, and cools.
condenses into tiny droplets.
Droplets suspend in the air, forming .
Three types of clouds are , , and .
Four kinds of precipitation come from clouds: , , ,
and .
3. You were asked to discuss and study this section with a partner. Was this a helpfulstrategy for learning the information? Why or why not?
After You ReadMini Glossarydew point: temperature at which air is saturated and
condensation formsfog: stratus cloud that forms when air near the ground is
cooled to its dew pointhumidity: amount of water vapor held in the airprecipitation: water falling from clouds—including rain,
snow, sleet, and hail—whose form is determined byair temperature
relative humidity: measure of the amount of moisture heldin the air compared with the amount it can hold at agiven temperature
weather: state of the atmosphere at a specific time andplace; determined by air pressure, wind, temperature,and how much moisture is in the air
End ofSection
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Before You ReadHave you ever gone into a basement or an attic? Describe howthe temperature felt compared to the rest of the building.
Weather ChangesSometimes when you leave school in the afternoon, the
weather is different from what it was earlier in the morning.Weather constantly changes.
What are air masses?An air mass is a large body of air that has the same
temperature and moisture content as the area over which itformed. For example, an air mass that develops over land isdrier than one that develops over water. An air mass thatdevelops in the tropics is warmer than one that developsover northern regions. When weather changes from one dayto the next, it is because of the movement of air masses.
How does air pressure affect the weather?Pressure in the atmosphere varies over Earth’s surface. You
may have heard a weather forecaster talk about high- andlow-pressure systems. Low-pressure systems are masses ofrising air. When air rises and cools, clouds form. That’s whyareas of low pressure usually have cloudy weather. Buthigh-pressure air masses have a sinking motion. As a result,it’s hard for air to rise and for clouds to form. So, highpressure usually means nice weather.
1. Describe What type ofweather are cyclonesassociated with?
Picture This2. Identify Color the arrow
showing cold air movementin the cold front blue. Colorthe arrow showing warm airmovement in the warmfront red.
What are cyclones and anticyclones?Winds blow from areas of high pressure to areas of low
pressure. In the northern hemisphere, when wind blows intoa low-pressure area, Earth’s rotation causes the wind to swirlin a counterclockwise direction. These large, swirling areasof low pressure are called cyclones. Cyclones are associatedwith stormy weather.
Winds blow away from an area of high pressure. In thenorthern hemisphere, Earth’s rotation causes these winds toswirl in a clockwise direction. High-pressure areas areassociated with fair weather and are called anticyclones.
FrontsA boundary between two air masses that have different
temperature, density, or moisture is called a front. There arefour main types of fronts, including cold, warm, occluded,and stationary.
What is a cold front?A cold front occurs when cold air moves toward warm air,
as shown on the left in the figure below. The cold air goesunder the warm air and lifts it. As the warm air is lifted, itcools and water vapor condenses, forming clouds. If there isa large difference in temperature between the cold air andthe warm air, thunderstorms and tornadoes may form.
What is a warm front?Warm fronts form when lighter, warmer air moves over
heavier, colder air, as shown on the right in the figurebelow. In a warm front, wet weather may last for days.
arrows red that show wherethe warm air is closed offfrom the surface in theoccluded front.
Picture This4. Identify Circle the area
in the stationary frontwhere neither the cold airnor warm air is moving.
What is an occluded front?Most fronts involve two air masses. But occluded fronts
involve three air masses—cold air, cool air, and warm air. Anoccluded front, as shown in the figure below, may form when acold air mass moves toward cool air with warm air in between.The cold air forces the warm air up. The warm air is thenclosed off from the surface. The term occlusion means “closure.”
What is a stationary front?A stationary front occurs when a boundary between air
masses stops moving, as shown in the figure below. Stationaryfronts can stay in the same place for several days. Oftenthere is light wind and precipitation at the stationary front.
Severe WeatherYou usually can do your daily activities regardless of the
weather. However, some weather conditions, like blizzards,tornadoes, and hurricanes, can force you to change your plans.
5. Explain How do waterdroplets falling out of athundercloud get bigger asthey fall toward Earth’ssurface?
6. Determine What causesdifferent parts of a cloud tohave opposite charges?
What causes thunderstorms?During thunderstorms, heavy rain falls, lightning flashes,
and thunder rumbles. Hail might fall. What causes theseweather conditions?
Thunderstorms occur in warm, moist air masses andalong fronts. Warm, moist air is forced up. It cools andcondensation begins, forming cumulonimbus clouds. Whenrising air cools, water vapor condenses into water dropletsor ice crystals. Smaller droplets collide and form largerones. The larger, heavier droplets fall through the cloudtoward Earth’s surface. The falling droplets collide withmore droplets and get bigger. Raindrops cool the air aroundthem. The cool, dense air sinks. Sinking, rain-cooled airand strong updrafts of warmer air cause the strong windsthat often come during thunderstorms. Hail may form asice crystals fall.
What damage do thunderstorms cause?Sometimes thunderstorms stall in one area, causing heavy
rains. When streams can no longer hold all the waterrunning into them, flash floods occur. Because they occurwith little warning, flash floods are dangerous.
Thunderstorms often bring strong winds that can causedamage. If a thunderstorm has winds over 89 km/h, it iscalled a severe thunderstorm. Hail from thunderstorms candent cars, break windows, and flatten crops.
What causes lightning?Inside a storm cloud, warm air is lifted rapidly as cooler
air sinks. This movement of air can cause different parts ofa cloud to have opposite charges. When an electrical currentruns between areas with opposite charges, lightning flashes.Lightning can occur between two clouds, inside one cloud,or between a cloud and the ground.
What causes thunder?Thunder comes from the rapid heating of air around a
bolt of lightning. Lightning can reach temperatures of about30,000° C. That’s five times hotter than the surface of theSun. This heat causes air around the lightning to expandrapidly. Then the air cools quickly and shrinks. Because ofthe sudden expanding and shrinking, molecules in the airmove more rapidly. The rapid movement of moleculescreates sound waves. Thunder is the sound waves you hear.
7. Identify What is aviolently rotating column ofair that touches the groundcalled?
What are tornadoes?Some severe thunderstorms produce tornadoes. A tornado
is a violently rotating column of air that touches theground. Severe thunderstorms produce wind at differentheights which blow at different speeds and in differentdirections. This difference in wind speed and direction iscalled wind shear. Wind shear creates a rotating columnparallel to the ground. Updrafts in a thunderstorm can tiltthe rotating column upward, creating a funnel cloud. If thefunnel cloud touches the ground, it is called a tornado.
The figure below shows a diagram of a tornado. Noticethe different levels of winds and the rotating updraft. Thestrong updraft usually forms at the base of a type ofcumulonimbus cloud called a wall cloud.
How much damage can a tornado do?Winds from tornadoes can rip apart buildings and tear
trees from the ground. If the winds of a tornado blowthrough a house, they can lift off the roof and blow out thewalls. It can look as though the building exploded. In thecenter of a tornado is a powerful updraft. The updraft canlift animals, cars, and even houses into the air. Tornados donot last long, but they are very destructive. In May of 1999,thunderstorms produced more than 70 tornadoes in Kansas,Oklahoma, and Texas. These tornadoes caused 40 deaths,100 injuries, and more than $1.2 billion in damage.
10. Identify What are twostorms similar tohurricanes?
How are tornadoes ranked?As you have read, winds from tornadoes can cause severe
damage. Theodore Fujita, a tornado expert, created a scaleto describe and rank tornadoes. The scale, named the FujitaScale after him, is shown below. The Fujita Scale rankstornadoes based on how much damage they cause.Tornadoes range from F0 which cause only light damage toF5 which cause incredible damage. Luckily, only about onepercent of all tornadoes are in the category of F4 and F5.
What is a hurricane?The most powerful storm is a hurricane. A hurricane is a
large, low-pressure system that forms over the warm AtlanticOcean and has winds of at least 119 km/h. It is like amachine that turns heat energy from the ocean into wind.Similar storms are called typhoons in the Pacific Ocean andcyclones in the Indian Ocean.
Hurricanes are similar to low-pressure systems overland—only stronger. In the Atlantic and Pacific Oceans,low-pressure systems sometimes develop near the equator.In the northern hemisphere, winds around this low pressurerotate counterclockwise. As the storms move across theocean, they gain strength from the heat and moisture ofwarm ocean water.
What happens when a hurricane reaches land?Hurricanes can strike land with great force. The high
winds sometimes produce tornadoes. Heavy rains and highwaves cause large amounts of damage. Sometimes floodsfollow the heavy rains and cause additional damage.Hurricanes can destroy crops, tear down buildings, and killhumans and animals.
What happens to the hurricane on land?As long as the hurricane remains over water, it gets
energy from the warm moist air rising from the ocean. Inthe figure below, small rising arrows show the movement ofwarm air from the water below. Cool air goes down throughthe eye, or center, of the hurricane. The storm needs thisenergy from the ocean water. When a hurricane reachesland, it loses its energy supply and the storm loses its power.
What is a blizzard?Severe storms also can occur in the winter. If you live in
the northern United States, you may have experienced thehowling wind and blowing snow of a blizzard. A blizzard isa winter storm with conditions that include very coldtemperatures, high winds, and blowing snow that makes itdifficult to see. A blizzard usually lasts at least three hours.
How can you stay safe during severe storms?When severe weather approaches, the National Weather
Service issues a watch or a warning. A watch tells you thateven though the weather isn’t dangerous yet, it may becomedangerous soon. During a watch, stay tuned to a radio ortelevision station that is reporting the weather.
When a warning is given, the weather is already severe.During a severe thunderstorm or tornado warning, go to abasement or to a room in the middle of the house awayfrom windows. When a hurricane or flood watch is given,be prepared to leave home. During a blizzard, stay indoors.
1. Review the terms and their definitions in the Mini Glossary. Then write a sentenceexplaining how hurricanes get and keep their strength.
2. Write the name of the correct weather front above each description.
warm front, stationary front, occluded front, cold front
Cold air goes under warm air. 3 air masses: cold, cool, warmWarm air is lifted. Warm air closed off from Earth.
Neither warm nor cold air is moving. Lighter, warmer air moves over cold air.
3. Did highlighting key terms and their meanings help you learn the information aboutweather patterns? Would you use this study strategy again?
After You ReadMini Glossaryair mass: large body of air that has the same characteristics
of temperature and moisture content as the area whereit formed
blizzard: severe winter storm with temperatures below–12° C, winds of at least 50 km/h, and blowing snowthat causes poor visibility that lasts at least three hours
front: boundary between two air masses with differenttemperature, density, or moisture
hurricane: large, severe storm that forms over tropicaloceans and has winds of at least 119 km/h
tornado: violently rotating column of air in contact withthe ground
End ofSection
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Sticky Notes As you readthis section, mark the pages youfind interesting or where youhave a question. Share thesepages with another student orwith the teacher.
!C Organize Make aFoldable like the one shownbelow to help you learn aboutweather forecasts.
Before You ReadHow good are you at predicting the weather? On the linesbelow, list things you consider when you’re deciding whatthe day’s weather might be like.
Weather ObservationsBy looking at the thermometer or at clouds in the sky, you
can tell things about the weather. Certain things about weatheryou know just from where you live. For example, if you live inFlorida, you know that it will probably be warm and sunny.
What does a meteorologist do?A meteorologist (mee tee uh RAH luh jist) studies the
weather. A meteorologist gathers information abouttemperature, air pressure, wind, humidity and precipitation.By using tools like computers, Doppler radar, satellites, andweather balloons, a meteorologist makes weather maps andforecasts the weather.
Forecasting WeatherMeteorologists gather information and make predictions
about weather in the future. Because storms can be dangerous,it is important to know if a storm is coming. The NationalWeather Service uses two sources to predict the weather.They collect information, or data, from the upperatmosphere. They also collect data from Earth’s surface.
.Station Models Meteorologists gather data from Earth’ssurface. Then this data is recorded on a map. A stationmodel shows weather conditions at a specific location usingsymbols on a map. Information coming from station modelsand from instruments in Earth’s atmosphere is put into com-puters and helps forecast weather.
How do maps show temperature and pressure?Weather maps have lines that connect locations with the
same temperature or the same pressure. An isotherm(I suh thurm) is a line that connects places with the sametemperature. Iso means “same.” Therm means “temperature.”You may have seen isotherms on weather maps on TV.
Weather maps, like the one below, also have isobars. Anisobar is a line that connects two places with the sameatmospheric pressure. Isobars show how fast wind is blowingin an area. When isobars are drawn close together, there is abig difference in air pressure. This means a strong wind isblowing. When isobars are drawn farther apart, there is littledifference in pressure. Winds in this area are gentler. Isobarsalso show locations of high- and low-pressure areas.
On the weather map below, the pressure areas are drawnas circles with the word High or Low in the middle of thecircle. Fronts are drawn as lines and symbols. Thisinformation helps meteorologists forecast the weather.
1. Review the terms and their definitions in the Mini Glossary. Then write a sentenceexplaining the difference between an isobar and an isotherm.
2. Arrange the following events in order to show how a meteorologist studies weather anduses information.
A meteorologist:forecasts weather
gathers data on weather conditionsmakes weather maps
First
Second
Third
After You ReadMini Glossaryisobar: line drawn on a weather map that connects two
places with the same atmospheric pressureisotherm: line drawn on a weather map that connects
locations with the same temperature
meteorologist: person who studies the weather and usesinformation from Doppler radar, weather satellites,computers, and other instruments to make weathermaps and provide forecasts
station model: indicates weather conditions at a specificlocation by using symbols on a map
End ofSection
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This shows that a cold front (air mass) is moving in.
This shows a warm front (air mass) moving in
This is a stationary front, where it’s not warm or cold
This is an occluded front, when cold air overtakes warm air, and there are thunderstorms.
Weather Student Pages:Reading Part I
Directions: Read the article below and answer the questions at the end. Highlight where you found the answers.
WeatherWhat is your weather like today? Is it sunny? Rainy? Whatever the answer, there
is a good chance it will change later, or tomorrow, or in a few months. Weather is a temporary condition in an area, related to temperature and precipitation. Weather forecasters are able to make some predictions about what the weather is going to be like in the future, but they can’t give guarantees! Also, you should know that weather is different from climate because climate describes long-term patterns.
Scientists use a variety of tools to study and predict what the weather is like. Barometers measure pressure, anemometers measure wind speed, thermometersmeasure temperature, weather balloons can be used to carry tools into the atmosphere to measure conditions there, and wind vanes can tell you the direction the wind is moving.
There are also weather maps and the variety of symbols they use. Each symbol tells you about the conditions of the weather in that area at that time. Let’s take a look!
1. How is weather different from climate?_______________________________________________________________________________________________________
2. Which tools would be most useful to describe a hurricane, and why? ______________________________________________________________________________________________________________________________________
Directions: Go back through your reading and circle important vocabulary words, especially any tools and symbols you might not have known about. Then, write a vocabulary word by each raindrop below. Use the three sections to draw a picture, give the definition, and put the word in a sentence.
Directions: Read the information below about El Nino and La Nina. Then, answer the questions.
El Nino and La Nina
El Nino (the Little Boy) and La Nina (the Little Girl) are phases of weather that can impact the ocean and global weather patterns. They can last 9-12 months, but some phases can even last for years!
In El Nino cycles, the temperature of the sea surfaces in the Pacific Ocean warm up. This can cause warmer temperatures in Canada and the U.S., with more rain over the Gulf Coast and drier weather over the Northwest. This can impact crops and fishing seasons.
La Nina cycles are the opposite, with colder sea temperatures in the Pacific. La Nina causes the opposite effects of El Nino, with warmer temperatures in the southeast and cooler temperatures in the Northwest.
1. Why would these cycles impact crops and fishing?
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