Post on 17-Jul-2015
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The atmosphere, air and weather.
UNIT 9
UNIT 9We are going to learn…
•Definition, sketch and parts of the atmosphere.•Air pollution sources.•Definition of weather.•Weather forecasts.•Weather measuring instruments.•Composition, properties and importance of air.
The Earth
< Lower layer
< Upper layers
< Outer space
The atmosphere is the layer of gases that sourrounds the Earth.
< Lower layerWe can breathe in this part. There is air.Weather occurs here.
< Upper layersWe can’t breathe in this part.Living things can not survive here
< Outer spaceThere isn’t air.There aren’t living things
Outer spaceThere isn’t air.There aren’t living things
Upper layersWe can’t breathe in this part.Living things can not survive here
Lower layerThere is air.We can breathe in this part. Weather occurs here.
The atmosphere is the layer of gases that sourrounds the Earth.
THE ATMOSPHERE
THE EARTH’S ATMOSPHERE IS MADE UP OF AIRAIR = NITROGEN + OXYGEN + CARBON DIOXIDE
AIR
AIR POLLUTION
Smoke stacks
Motor vehicles
Aerosol sprays
Volcanic activity
Controlled Burn
Toxic gases
SUNNY CLOUDY CLEAR RAINY WINDY
HUMID HOT WARM COLD COOL
SNOWY FOGGY WET HUMID ICY
This is the weather in Spain today. In the north it’s cloudy, in the west it’s rainy, in the east it’s foggy and in the south it’s sunny.
This is the weather in Spain today. In the north it’s snowy, in the west it’s sunny, in the east it’s rainy and in the south it’s sunny.
MEASURING WEATHER
ThermometerThe thermometer measures
temperature
MEASURING WEATHER
AnemometerThe anemometer measures
wind speed
MEASURING WEATHER
Rain gaugeThe rain gauge
measures rain fall
MEASURING WEATHER
Weather vaneThe weather vane measures
wind direction
AIR = NITROGEN + OXYGEN + CARBON DIOXIDENITROGEN, OXYGEN and CARBON DIOXIDE are GASES
The most abundant gas is nitrogen.
The most important gas for animals and people is oxygen.We breathe oxygen into our lungs and breathe out carbon dioxide.
Plants need carbon dioxide to make their food.Plants release oxygen into the atmosphere.
Gills Gases Air Carbon dioxide Oxygen Air
gases
air
gillsair
Carbon dioxide
oxygen
AIR
Composition
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Properties
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Importance
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AIR Composition
Nitrogen.
Oxygen.
Carbon dioxide.
AIR
Composition
Nitrogen.
Oxygen.
Carbon dioxide.
Properties
No colour.
No shape.
No taste or smell.
Has weight.
AIR Properties
No colour.
No shape.
No taste or smell.
WEIGHT?
NO COLOUR: Air is invisible, it has no colour.NO SHAPE: It takes the shape of its container.NO TASTE OR SMELL: It has no taste or smell.WEIGHT: Is weight a propertie of air?
WEIGHT:
SCIENTIFIC METHOD:
EXPERIMENTDOES AIR WEIGHT?
WEIGHT:
Air does have air / Air does not have air
WEIGHT:
SCIENTIFIC METHOD:1 Question:I wonder if air has got weight.DOES AIR WEIGHT?
WEIGHT:
SCIENTIFIC METHOD:2 Hypothesis:I think that if I burst a balloon…if there is weight, the other balloon will not remain in balance.if there isn’t weight, the other ballon will remain in balance.
WEIGHT:
SCIENTIFIC METHOD:3 Conduct an experiment:
WEIGHT:
SCIENTIFIC METHOD:4 I discovered:I discovered that if I burst a balloon with a pin, the other balloon will not remain in balance.
WEIGHT:
SCIENTIFIC METHOD:4 Conclusion:I know that air has weight. A balloon with air has more weight than other balloon without weight.
AIR Properties
No colour.
No shape.
No taste or smell.
HAS WEIGHT
NO COLOUR: Air is invisible, it has no colour.NO SHAPE: It takes the shape of its container.NO TASTE OR SMELL: It has no taste or smell.HAS WEIGHT
AIR
Composition
Nitrogen.
Oxygen.
Carbon dioxide.
Properties
No colour.
No shape.
Has weight.
No taste or smell.
Importance
Hearing.
Flying.
Burning.
Electricity.
Inflate things.
AIR Importance
Hearing.
Flying.
Burning.
Electricity.
Inflate things.
AIR
Composition
???
???
???
Properties
???
???
???
???
Importance
???
???
???
???
???
AIR
Composition
Nitrogen.
Oxygen.
Carbon dioxide.
Properties
No colour.
No shape.
Has weight.
No taste or smell.
Importance
Hearing.
Flying.
Burning.
Electricity.
Inflate things.
We have learnt…
•Definition, sketch and parts of the atmosphere.•Air pollution sources.•Definition of weather.•Weather forecasts.•Weather measuring instruments.•Composition, properties and importance of air.
The atmosphereThe Earth’s atmosphere is made up of air.
AIR = NITROGEN + OXYGEN + CARBON DIOXIDE
1
2
3 4
5 6
Electricity.
AIR
Composition
???
???
???
Properties
???
???
???
???
Importance
???
???
???
???
???
Nitrogen.
Oxygen.
Carbon dioxide.
No colour.
No shape.
Has weight.
No taste or smell.
Hearing.
Flying.
Burning.
Inflate things.