5 Minute Check11/23/15

1. Name each part of the volcano

Today’s Standard:4.3 - The student will describe how landforms are the result of a combination of constructive and destructive

A

B

C D

E

F

I

H

G

Constructive Force Destructive Force

Take out our notes from yesterday

Two Types of Forces Destructive Forces: processes that

destroys or breakdown landforms.◦ 2 types: Slow (weathering) and Fast (Erosion)◦ Ex. landslides, volcanic eruptions, earthquakes,

floods

Constructive forces: forces that build up an existing landform or create a new one. ◦ Caused by: water, gravity, wind and glaciers.◦ Ex: deposition, landslides, volcanic eruptions,

floods

Destructive forces – destroy and wear away landmasses through processes like weathering and erosion.

◦ Weathering – wearing by wind, precipitation, freezing/thawing◦ Erosion – wearing down & carrying away of land by natural forces

Destructive forces are those that are recycling the Earth, like Earthquakes and plate movement.

Destructive forces are those that relocate crust, like when wind erodes or takes away some of the sand on a sand dune or beach.

Farming is a destructive process, because the soil has to be dug up and moved around in order to grow plants.

Mining is another destructive process, because we dig holes into the earth or blow up parts of the earth and/or caves in order to get what we want.

Constructive and Destructive processes

Weathering Weathering: a slow, destructive force that

breaks rocks into smaller pieces called sediments. Can be by a physical (mechanical) or chemical process.

Weathering Pictures

Mechanical weathering: the breaking of rock into smaller pieces by forces due to gravity, ice, plant roots, or other physical forces.

Chemical Weathering: the changing of materials in a rock by chemical processes.

Erosion Erosion: the destructive movement of

materials away from one place by wind, water, ice and gravity.

Wave Erosion- caused by waterWind Erosion (Dust Storm)

Grand Canyon Video

Landslides

Landslides: occur when gravity quickly pulls rock and dirt downhill.

Floods Floods: a great flow of water over an area

that is usually dry land.

Volcanic Eruptions

Volcano: an opening in the Earth’s crust through which steam, lava and ashes erupt.

Cause both destructive and constructive changes to landforms.

Mount St. Helens

Saint Helen’s Before

Saint Helen’s After

Mount St. Helens Video

Volcanoes can be constructive, but also destructive…

Earthquakes

Earthquakes: the shaking of Earth’s surface caused by the release of energy along a fault.

San Andreas Fault, California

Volcanoes & EarthquakesTectonic Plates, Volcanoes & Earthquakes

The Ring of Fire has 452 volcanoes and is home to over 75% of the world's active and dormant volcanoes. About 90% of the world's earthquakes and 81% of the world's largest earthquakes occur along the Ring of Fire.

Constructive forces – shape earth’s surface by building up mountains, volcanoes and other landmasses caused by plate movements. It makes positive changes!

Examples:◦When sand is deposited onto a river bank by the

running water. This builds up the river bank, making it higher.

◦A volcano erupting. This builds up the land around the volcano, making it higher.

Constructive and Destructive processes

Constructive Process

Any type of geological event where land is uplifted.

Uplift- the movement of fault block (normal fault)

Mountain Building- the convergence of two plates

Constructive forces built up the Himalayas

Erosion & Deposition

Deposition: the placing of materials in a new place (constructive force).

Ex. Sandbars

Water Erosion & Deposition River Delta-

Deposits of sediment at the mouth of the Mississippi River creating new land called a delta.

Wind Erosion & Deposition Sand Dunes- sand is moved by wind

Desert Sand Dunes Ocean Sand Dunes

The Bernard Glacier in Alaska's Saint Elias Mountains

Grand Canyon – sandstone rock

New York – lichen on granite; secrete chemicals that break down rock

Is it a Constructive & Destructive Force?

video

Sailing rocks in Death Valley

List examples of constructive and destructive forces.

Closing

5 Minute Check11/24/15

1. Give an example of a Constructive and a Destructive force? Then explain why it is constructive or destructive, remember some things fall into both categories.

Today’s Standard:4.3 - The student will describe how landforms are the result of a combination of constructive and destructive

Tomorrow is our test on Constructive and Destructive forces. Study your green notebook.

Monday we are turning in your green notebooks so make sure you have all your notes.

Monday we are doing BYOD so make sure you have your devices here for class

Taking care of business:

What makes something a destructive force?◦ It destroys or breakdown landforms

What makes something a constructive force?◦ It builds up an existing landform or creates new

land

Let’s review

video

Constructive and Destructive Forces Video

Let’s review: Destructive ProcessWeathering: Breaking down rock into smaller pieces

Chemical Example

Chemical weathering is caused by rain water reacting with the mineral grains in rocks to form new minerals.

acid rain breaks down rocks like in granite gravestones and statues

Let’s review: Destructive ProcessWeathering: Breaking down rock into smaller pieces

Mechanical Example

the use of mechanical force to break apart rocks (Physical)

Plants growing in sidewalk

A-Chemical Weathering

B-Mechanical Weathering

Let’s try some examples

1What type of weathering is this?

A-Chemical WeatheringB-Mechanical Weathering

1What type of weathering is this?

A-Chemical WeatheringB-Mechanical Weathering

Chemical Weatherin

g

2What type of weathering is this?

A-Chemical WeatheringB-Mechanical Weathering

2What type of weathering is this?

A-Chemical WeatheringB-Mechanical Weathering

Mechanical Weatherin

g

3What type of weathering is this?

A-Chemical WeatheringB-Mechanical Weathering

3What type of weathering is this?

A-Chemical WeatheringB-Mechanical Weathering

4What type of weathering is this?

A-Chemical WeatheringB-Mechanical Weathering

4What type of weathering is this?

A-Chemical WeatheringB-Mechanical Weathering

Let’s review: Destructive ProcessErosion- the process of moving sediment

Water Brings weathered materials from their source to another location where they are deposited.

• Ex. Oceans and rivers

Wind Picks materials temporarily up and transports them to another location where they are deposited, and either stored or re-mobilized and transported to another location.

• Ex. Moving soil or sand at sand dunes

Ice Particles are plucked up or incorporated by moving ice and are transported downhill

• Ex. Moving land and glaciers

Gravity

facilitates the down slope transportation of loosened, weathered materials and enables them to move without the aid of water, wind, or ice.

• Ex. Landslide

Video

Video - StudyJams Weathering and Erosion

Examples:◦ Earthquakes

Caused by moving plates: Convergent plates that give us mountain ranges Divergent plates bring new land where they are dividing

Caused by faults: Normal faults give us uplift which gives us more crust

◦ Volcanoes After the lava leaves the volcano it hardens to give is new land

◦ Floods After a flood, material is deposited at a new location

◦ Landslide At the bottom of a landslide new material gets deposited

◦ Sand dunes◦ Deltas

Let’s review: Constructive Forces

Let’s look at images from Nevada and our surrounding areas and discuss whether or

not they were formed by a constructive or a destructive

force

Using your clickers:A- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada

pine tree eroded by wind

5. Nevada’s Great Basin National ParkA- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada

pine tree eroded by wind

5. Nevada’s Great Basin National ParkA- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada6. Lake Tahoe – created by a normal faultA- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada6. Lake Tahoe – created by a normal faultA- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada7. Sierra Nevada MountainsA- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada7. Sierra Nevada MountainsA- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada8. Spring Mountain Range (Mt. Charleston)A- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada8. Spring Mountain Range (Mt. Charleston)A- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada9. Red Rock Canyon A- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada9. Red Rock Canyon A- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada10. Valley of FireA- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples here in Nevada10. Valley of FireA- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples other than NV11. Grand CanyonA- Constructive B-Destructive

Is it a Constructive & Destructive Force?Let’s look at examples other than NV11. Grand CanyonA- Constructive B-Destructive

Video

Weathering and Erosion Song

We have discussed a lot of different things that are considered a constructive and a destructive force. What can be considered both? Why?

Closing

5 Minute Check11/25/15

1. What are all the names for the hot stuff that comes out of volcanos?

Today’s Standard:4.3 - The student will describe how landforms are the result of a combination of constructive and destructive

Monday we are using our devices for a few minutes in class, please bring your id with the sticker and your device to class.

Taking care of business

Test of constructive and destructive forces

Geological Processes

Video