1. Weathering, Erosion , & Deposition The Wearing Down and Building Up of Earth

2. Weathering
The process that breaks down rock and other substances at the Earth’s surface
Caused by: heat, cold, water, ice, oxygen, and carbon dioxide on the Earth’s surface!

3. Add to your notes! DESCRIPTION:
The process that breaks down rock and other substances at the Earth’s surface
WEATHERING

4. Add to your notes! CAUSED BY: HEAT COLD WATER ICE OXYGEN
CARBON DIOXIDE
WEATHERING

5. Two kinds of weathering
Both types of weathering act slowly, but over time they break down even the biggest, hardest rocks.
Physical, or mechanical, weathering
Chemical weathering

6. Mechanical Weathering
A rock is physically broken into smaller pieces
Affects all the rock on the Earth’s surface
Works very slowly, yet over time can eventually wear away a whole mountain

7. A rock is physically broken into smaller pieces!
Add to your notes!
MECHANICAL
A rock is physically broken into smaller pieces!

8. Mechanical Weathering Refer to the Picture Walk Through the Text for the descriptions of the following terms:
Freezing and thawing
Release of pressure
Plant growth
Actions of animals
Abrasion

10. Chemical Weathering The composition, or make up, of a rock is changed
New minerals can be formed in a rock as it is broken down
Holes or soft spots can be created in a rock so it breaks apart easier

11. Chemical Weathering Refer to page 243 to complete the information on your web for the following causes of chemical weathering!
Water
Oxygen
Carbon dioxide
Living organisms
Acid Rain
Complete book work!
END - Weathering

12. Effects of Rain! Teacher demo
We will complete this demo FIRST!!
Make sure you are filling in the correct table!
Watch as I demo the effects of Rain!

13. Which experiment will you do??
Water, Water Everywhere!
Butterflies:
2 glass jars filled a little more than half full with water
Handprints – 4 smarties
Don’t forget to answer the questions using complete sentences!
Begin experiment!!

14. Erosion Erosion is the removal of rock particles from a location.
Caused by water, wind, ice, or gravity.

15. The removal of rock particles from a specific location
Add to your notes!
EROSION:
The removal of rock particles from a specific location
EROSION:

16. Add to your notes!
CAUSED BY:
WATER
WIND
ICE
GRAVITY
EROSION

17. WATER EROSION
Water sources such as rivers, streams, ocean tides, and runoff can move rock particles away....

18. Water Erosion-Rivers
Rivers and streams carry sediment. As the sediment moves mechanical weathering occurs.
Through water erosion, rivers create waterfalls, flood plains, and valleys.

21. What happens, happens for
a reason

22. Water Erosion-Waves
Waves- waves shape the coasts by transporting sand. While the sand is moved, mechanical weathering occurs.
Waves create sea stacks, caves, arch, and wave-cut cliffs.

23. Erosion by Runoff
As water from precipitation (rain, snow, etc.) moves over the land, it carries particles with it. The moving water is called runoff.
Runoff creates rills and gullies.

24. WIND EROSION
Sometimes the wind can move rock particles away: this can lead to dust storms!

25. WIND EROSION
Wind Erosion creates dust storms, hoodoos, and arches.

26. Ice Erosion
As a glacier flows over the land, it picks up rocks in a process called plucking.

27. Ice Erosion
Ice erosion creates: U-shaped valleys, glacial lakes, moraines, drumlins, and kettle lakes.

28. Erosion by Gravity Gravity causes sediment to move downhill.
It creates: landslides, mudflows, and creeps.

29. Weathering and Erosion work together continuously to wear down and carry away the rocks at the Earth’s surface!!!!!
END - Erosion

30. Deposition
Deposition is the process in which sediment is laid down in new locations.
Caused by water, wind, ice, and gravity.

31. Add to your notes! Deposition:
Deposition is the process in which sediment is laid down in new locations.
Deposition:

32. Add to your notes!
CAUSED BY:
water
wind
ice
gravity
Deposition

33. Deposition Wind Sand Dune Water *Waves *River *Beaches *Delta Ice
Type of Deposition
Creates
Picture
Wind
Sand Dune
Water
*Waves
*River
*Beaches
*Delta
Ice
Moraine An accumulation of boulders, stones, or other debris carried and deposited by a glacier.
Gravity
Landslide, Slump, Creep

34. Moraine An accumulation of boulders, stones, or other debris carried and deposited by a glacier.

35. Let’s Look at Arizona…. Think About It:
What is the science behind paragraph 2?
How are haboobs good examples of Weathering, Erosion, AND Deposition?

36. Gooey Grahams! Materials ½ piece of graham cracker
Beaker filled half way with water
Pipette
Pie tin
Follow the directions and leave room to answer the questions using complete sentences (in your lab notebook)