Lesson 8 Date: 1/26 LT: I can describe weathering, erosion, and deposition Sponge: Where are earthquakes most likely to occur?

To do… Check HW 100 point dau=y!

Introduce 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 Watch the multimedia closely!

Notebook page 127

Notebook page 129 Turn in your green book to page 111 – you will need it for question 5 and 6!

Notebook page bounces along, slows down the longer it is in the river

Notebook page bounces along, slows down the longer it is in the river 2. Large are deposited first, small are deposited last

Notebook page 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 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 A delta forms where the sediments meet the water 4. brown 5. Lake Mead

Notebook page A delta forms where the sediments meet the water 4. brown 5. Lake Mead 6. along the river

Notebook page 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 131 View the multimedia!

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

NB A large amount of sediment is broken away and carried by the river. 2. Homogenous

NB 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 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 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! 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 deposition a part of streams and water sources? erc/content/visualizations/es1305/es1305page0 1.cfm?chapter_no=visualizationhttp:// erc/content/visualizations/es1305/es1305page0 1.cfm?chapter_no=visualization erc/content/visualizations/es1306/es1306page0 1.cfm?chapter_no=visualizationhttp:// erc/content/visualizations/es1306/es1306page0 1.cfm?chapter_no=visualization erc/content/visualizations/es1303/es1303page0 1.cfm?chapter_no=visualizationhttp:// erc/content/visualizations/es1303/es1303page0 1.cfm?chapter_no=visualization

Lesson 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… Check HW 100 point day

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 the environment it came from? sand-minuteearth-video_n_ htmlhttp:// sand-minuteearth-video_n_ html Green book page 134 and 135 How are they similar? Different?

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

Sorting

Sand Comparison NB 133 Lets compare the sand you made to beach sand.

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. Abrasion: Breaking rocks by bumping and rubbing

Grand Canyon Flood Read pages 12 – 15 Answer questions from page 15 below your sponge.

Grand 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 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 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 8 Date: 1/28 LT: I can describe weathering, erosion, and deposition. Sponge: ________ is the breaking of rocks. _________ is moving the rocks.

To do…

Weathering and Erosion Fill out your guided notes as we watch the powerpoint!

Weathering and Erosion Intro: landforms.html landforms.htmlhttp://education-portal.com/academy/lesson/effect-of-erosion-and-deposition-on- landforms.html

Which is it: Weathering or Erosion? Weathering to break into smaller pieces Erosion to move the pieces

Q: Does erosion and weather happen at the same time? Yes. Very often.

Weathering Earth’s crust breaking down into smaller pieces. -Breaking -Wearing away -Dissolving

Rock material is changed to another substance by reacting with a chemical Banging Cracking Scratching Rubbing Etc... Chemical Physical (Mechanical) Two Weathering Types

Weathering Weathering Physical Ice / Frost Wedging Plants Animals Heat / Expansion Rubbing / Impact Chemical Acids Oxidation Plants Water

Frost Wedging Water expands as it freezes. Physical Weathering

Rock Cracked by Frost Wedging Physical Weathering

Plant Roots slowly crack rocks Physical Weathering

As roots grow they expand Roots expand and apply pressure to rocks. Physical Weathering

Repeated Banging, Rubbing, Rolling (Edges become rounded) Physical Weathering

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

Chemical Weathering The process that breaks down rock through chemical changes. Chemical weathering methods –Water –Oxygen –Living organisms –Acid Rain and Carbonic Acids

Water Water weathers rock by dissolving it with chemicals Chemical Weathering

Oxidation Oxygen + Iron = Rust Chemical Weathering

Living Organisms ? How do Lichen weather rocks? Lichen produce Weak Acids that break down the rock. They literally ‘eat the rock’ Chemical Weathering

Acid Rain Pollutants from burning coal, oil, and gas react chemically with water forming acids. Acid Rain is a fast chemical weathering Chemical Weathering - Dissolves stone, especially limestone - Ruins soils.

Acid Rain Acid Rain easily weathers limestone and marble Chemical Weathering

Erosion The process by which rocks and soil is moved from its original location. Discovery Ed Movie Ways to Move Water Ice Wind Gravity

Water Erosion Rivers, streams, and runoff

Ice Erosion Glaciers are very slow ice rivers. They carry rocks of all sizes. EROSION

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

Wind Erosion Farmland topsoil is blown away

Mass Movements by Gravity Landslides, mudslides, slump and creep Land SlidesMudslides ationalgeogra phic.com/vide o/101- videos/landsli des slearningmed ia.org/resourc e/nat08.earth. geol.eros.cliff s/hawaiian- coastal-cliffs/

Deposition To Deposit. When sediments settle out of what is carrying them Deposition Simulation link

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… Write one paragraph for each! Where have you seen erosion? Where have you seen deposition? Where have you seen weathering?

Lesson 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…

Review… Review physical and chemical weathering Examples of each – e/terc/content/visualizations/es1201/es1201p age01.cfm?chapter_no=visualizationhttp:// e/terc/content/visualizations/es1201/es1201p age01.cfm?chapter_no=visualization – e/terc/content/visualizations/es1202/es1202p age01.cfm?chapter_no=visualizationhttp:// e/terc/content/visualizations/es1202/es1202p age01.cfm?chapter_no=visualization

Notebook Guided Reading Read page 138 – 143 We’ll use light crayons to highlight key ideas. Answer the questions on page 144.

Notebook 144 This is my example. DON’T COPY! Do your own. 1.

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

Notebook 144 This 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… Brainpop: Erosion

Lesson 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… Agenda

Watch Weathering and Erosion movie! While you watch the movie, fill in the chart. You must have 3 examples of each!

Performance Assessment : Rock 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 8 Date: 2/2 LT: I can explain weathering, erosion, and deposition. Sponge: Tiny pieces of rock are called ___________.

To do… Check HW

Quiz Review Guide

Bill Nye: Erosion Fill in the worksheet as you view the video! nLcnZAhttps:// nLcnZA