Lesson 8Lesson 8

• Date: 1/26

• LT: I can describe weathering, erosion, and deposition

• Sponge: Where are earthquakes most likely to occur?

To do…To do…

• Check HW

• 100 point dau=y!

Introduce Landforms VocabularyIntroduce Landforms Vocabulary

• Review the landforms on pages 107 to 109

• Fill in the blanks on your sheet – Look in your green book on page 110 for

help!

Stream Table Stream Table

• Watch the multimedia closely!

Notebook page 127Notebook page 127

Notebook page 127Notebook page 127

Notebook page 129Notebook page 129

• Turn in your green book to page 111 – you will need it for question 5 and 6!

Notebook page 129Notebook page 129

• 1. bounces along, slows down the longer it is in the river

Notebook page 129Notebook page 129

• 1. bounces along, slows down the longer it is in the river

• 2. Large are deposited first, small are deposited last

Notebook page 129Notebook page 129

• 1. bounces along, slows down the longer it is in the river

• 2. Large are deposited first, small are deposited last

• 3. A delta forms where the sediments meet the water

Notebook page 129Notebook page 129

• 1. bounces along, slows down the longer it is in the river

• 2. Large are deposited first, small are deposited last

• 3. A delta forms where the sediments meet the water

• 4. brown

Notebook page 129Notebook page 129

• 3. A delta forms where the sediments meet the water

• 4. brown

• 5. Lake Mead

Notebook page 129Notebook page 129

• 3. A delta forms where the sediments meet the water

• 4. brown

• 5. Lake Mead

• 6. along the river

Notebook page 129Notebook page 129

• 3. A delta forms where the sediments meet the water

• 4. brown

• 5. Lake Mead

• 6. along the river

• 7. The plateau came first, then the river cut through it, making the Grand Canyon.

NB 131NB 131

• View the multimedia!

NB 131NB 131

• 1. A large amount of sediment is broken away and carried by the river.

NB 131NB 131

• 1. A large amount of sediment is broken away and carried by the river.

• 2. Homogenous

NB 131NB 131

• 1. A large amount of sediment is broken away and carried by the river.

• 2. Homogenous

• 3. The top layer is weathering and eroding away.

NB 131NB 131

• 1. A large amount of sediment is broken away and carried by the river.

• 2. Homogenous

• 3. The top layer is weathering and eroding away.

• 4. Not much! The water is not eroding it.

NB 131NB 131

• 1. A large amount of sediment is broken away and carried by the river.

• 2. Homogenous

• 3. The top layer is weathering and eroding away.

• 4. Not much! The water is not eroding it.

• 5. The clay layer protected it.

Copy in your index!Copy in your index!• Weathering: Wearing away or breaking

down rocks

• Deposition: the settling out or dropping of sediments

• Erosion: the movement of sediments

• Sediments: pieces of earth material

• Differential erosion: different materials break down at different rates

How are weathering, erosion, and How are weathering, erosion, and deposition a part of streams and deposition a part of streams and

water sources?water sources?• http://www.classzone.com/books/earth_science/t

erc/content/visualizations/es1305/es1305page01.cfm?chapter_no=visualization

• http://www.classzone.com/books/earth_science/terc/content/visualizations/es1306/es1306page01.cfm?chapter_no=visualization

• http://www.classzone.com/books/earth_science/terc/content/visualizations/es1303/es1303page01.cfm?chapter_no=visualization

Lesson 8Lesson 8

• Date: 1/27

• LT: I can describe the process of weathering, erosion, and deposition.

• Sponge: Which came first, sand or a rock?

To do…To do…

• Check HW

• 100 point day

Where do sediments come from?Where do sediments come from?

• Lets do an activity to explore this idea….how can I make sand using this container and these rocks?

• How can that process happen in nature?

What clues can sand give us for What clues can sand give us for the environment it came from?the environment it came from?

• http://sandgrains.com/book-video.html

• http://www.huffingtonpost.com/2013/11/27/sand-minuteearth-video_n_4351364.html

• Green book page 134 and 135

• How are they similar? Different?

How do we describe sand?How do we describe sand?

• I will be passing around examples of each to help you understand!

• Wentworth Scale for size : Green 132

• Shape: Green 133

• Composition: Green 133

• Sorting: Green 133

SortingSorting

Sand Comparison NB 133Sand Comparison NB 133

• Lets compare the sand you made to beach sand.

Copy at the top of NB 133!Copy at the top of NB 133!

• The longer sand is carried by water, the more rounded and smaller it gets!

Copy in your index.Copy in your index.

• Abrasion: Breaking rocks by bumping and rubbing

Grand Canyon FloodGrand Canyon Flood

• Read pages 12 – 15

• Answer questions from page 15 below your sponge.

Grand Canyon FloodGrand Canyon Flood

• 1. They both involved a lot of weathering and erosion in a short amount of time. The Grand Canyon flood happened in real life and on a bigger scale than our fake flood in class which was a small model.

Grand Canyon FloodGrand Canyon Flood

• 1. They both involved a lot of weathering and erosion in a short amount of time. The Grand Canyon flood happened in real life and on a bigger scale than our fake flood in class which was a small model.

• 2. Make 2 stream tables. Put a lot of water through one and little water through the other one.

Grand Canyon FloodGrand Canyon Flood

• 2. Make 2 stream tables. Put a lot of water through one and little water through the other one.

• 3. Before, there was more sand on the beach. During the flood, the water was brown from sand. After, there were more cliffs and signs of weathering along the beach.

Lesson 8Lesson 8

• Date: 1/28

• LT: I can describe weathering, erosion, and deposition.

• Sponge: ________ is the breaking of rocks. _________ is moving the rocks.

To do…To do…

Weathering and ErosionWeathering and Erosion

• Fill out your guided notes as we watch the powerpoint!

Weathering Weathering and and

ErosionErosionIntro: http://education-portal.com/academy/lesson/effect-of-erosion-and-deposition-on-Intro: http://education-portal.com/academy/lesson/effect-of-erosion-and-deposition-on-

landforms.htmllandforms.html

Which is it: Which is it: Weathering or Erosion?Weathering or Erosion?

Weathering

to break into smaller pieces

ErosionErosion

to move the to move the piecespieces

Q: Does erosion and weather Q: Does erosion and weather happen at the same time?happen at the same time?

Yes.

Very

often.

WeatheringWeathering

Earth’s crust breaking down into smaller pieces.

- Breaking- Wearing away- Dissolving

Rock material is changed to another substance by reacting with a chemical

BangingCracking

ScratchingRubbing

Etc . . .

ChemicalPhysical(Mechanical)

Two Weathering Two Weathering TypesTypes

WeatheringWeatheringWeathering

Physical Chemical

Ice / Frost Wedging

Plants

Animals

Heat / Expansion

Acids

Oxidation

Plants

Water

Rubbing / Impact

Frost WedgingFrost Wedging

Water expands as it freezes.

Physical Weathering

Rock Cracked by Frost Rock Cracked by Frost WedgingWedging

Physical Weathering

Plant Roots Plant Roots slowly crack rocksslowly crack rocksPhysical Weathering

As roots grow As roots grow they expand they expand

Roots expand and apply pressure to rocks.

Physical Weathering

Repeated Banging, Rubbing, RollingRepeated Banging, Rubbing, Rolling (Edges become rounded)(Edges become rounded)

Physical Weathering

Moving Water Moving Water uses large rocks, pebbles, uses large rocks, pebbles, sand, and silt to create wear down other rockssand, and silt to create wear down other rocks

Physical Weathering

Chemical WeatheringChemical Weathering

• The process that breaks down rock through chemical changes.

• Chemical weathering methods– Water– Oxygen– Living organisms– Acid Rain and Carbonic Acids

WaterWater• Water weathers rock by dissolving it with

chemicals

Chemical Chemical WeatheringWeathering

Oxidation Oxidation Oxygen + Iron = RustOxygen + Iron = Rust

Chemical Chemical WeatheringWeathering

Living Organisms ?Living Organisms ?How do Lichen weather rocks?

Lichen produce Weak Acids that break down the rock.

They literally

‘eat the rock’

Chemical Chemical WeatheringWeathering

Acid RainAcid Rain• Pollutants from burning coal, oil, and gas react

chemically with water forming acids.• Acid Rain is a fast chemical weathering

Chemical Chemical WeatheringWeathering

- Dissolves stone, especially limestone

- Ruins soils.

Acid RainAcid Rain• Acid Rain easily weathers

limestone and marble

Chemical Chemical WeatheringWeathering

ErosionErosion• The process by which rocks and soil is moved

from its original location. Discovery Ed Movie

Ways to Move

Water

Ice

Wind

Gravity

Water ErosionWater Erosion• Rivers, streams, and runoff

Ice ErosionIce Erosion

Glaciers

are very slow ice rivers.

They carry rocks of all sizes. EROSION

Glaciers weather the hillsides and carry the Glaciers weather the hillsides and carry the pieces away. Rounded trenches are left. pieces away. Rounded trenches are left.

Wind ErosionWind Erosion

Farmland topsoil is blown away

Mass Movements by GravityMass Movements by Gravity

Landslides, mudslides, slump and creep

Land Slides Mudslides

http://video.nationalgeographi

c.com/video/101-

videos/landslides

http://www.pbslearningmedia.org/resource/

nat08.earth.geol.eros.cliffs/

hawaiian-coastal-cliffs/

DepositionDeposition• To Deposit.

• When sediments settle out of what is carrying them

• Deposition Simulation link

Comp: On the back…Comp: On the back…

• Write two sentence for each!

• Where have you seen erosion?

• Where have you seen deposition?

• Where have you seen weathering?

AP: On the back…AP: On the back…

• Write one paragraph for each!

• Where have you seen erosion?

• Where have you seen deposition?

• Where have you seen weathering?

Lesson 8Lesson 8

• Date: 1/29

• LT: I can explain weathering, erosion, and deposition.

• Sponge: Rusting is _______ weathering. Tree roots cracking a sidewalk are _____________ weathering.

To do…To do…

Review…Review…

• Review physical and chemical weathering• Examples of each

– http://www.classzone.com/books/earth_science/terc/content/visualizations/es1201/es1201page01.cfm?chapter_no=visualization

– http://www.classzone.com/books/earth_science/terc/content/visualizations/es1202/es1202page01.cfm?chapter_no=visualization

Notebook Guided ReadingNotebook Guided Reading

• Read page 138 – 143

• We’ll use light crayons to highlight key ideas.

• Answer the questions on page 144.

Notebook 144Notebook 144

• This is my example. DON’T COPY! Do your own.

• 1.

Notebook 144Notebook 144

2. The harder rock on top didn’t wear away. The softer rock below it wore away quickly. Differential erosion caused this.

Notebook 144Notebook 144This is my example. DON’T COPY! Do your own

3.

•Weathering: trees crack the sidewalks in my neighborhood

•Erosion: sand is carried away along the Ohio River

•Differential Erosion: Mammoth caves were formed by soft rocks wearing away underground

•Landform: Cliffs along the highway going downtown

If time…If time…

• Brainpop: Erosion

Lesson 8Lesson 8

• Date: 2/1

• LT: I can explain weathering, erosion, and deposition. Sponge: The two types of weathering are _________ and ___________. Plant roots are _________ while oxidation is ___________.

To do…To do…

Agenda

Watch Weathering and Erosion Watch Weathering and Erosion movie!movie!

• While you watch the movie, fill in the chart. You must have 3 examples of each!

Performance Assessment : Performance Assessment : Rock CycleRock Cycle

For 1 to 3, choose CHEMICAL or PHYSICAL.•1. Acid Rain•2. Frost Wedging•3. Abrasion (rocks hitting each other)

For 4 and 5, choose weathering, erosion, and deposition. •4. moving sediments•5. breaking down sediments

Lesson 8Lesson 8

• Date: 2/2

• LT: I can explain weathering, erosion, and deposition.

• Sponge: Tiny pieces of rock are called ___________.

To do…To do…

• Check HW

Quiz Review GuideQuiz Review Guide

Bill Nye: ErosionBill Nye: Erosion

• Fill in the worksheet as you view the video!

• https://www.youtube.com/watch?v=5TuP9nLcnZA