Rocks Weathering and Erosion

What is physical weathering?

• The process of rocks and minerals turning into liquid form.

• The process of rocks changing their composition without breaking down into smaller pieces.

• The process of breaking down rocks and minerals into smaller pieces without changing their composition.

• The process of rocks and minerals growing in size and becoming larger.

Give an example of physical weathering.

• Volcanic eruption

• Tectonic plate movement

• Chemical weathering

• Freeze-thaw weathering

How does water cause erosion?

• Water causes erosion by creating new soil and rock particles

• Water has no effect on erosion

• Erosion is caused by wind, not water

• Water carries rocks and sediment down a river or along a beach.

Explain how wind can cause erosion.

• Wind causes erosion by increasing the stability of soil and rock particles

• Wind causes erosion by reducing the speed of soil and rock particles

• Wind can cause erosion by picking up and carrying loose particles of soil and rock, which then collide with other surfaces and wear them away.

• Wind causes erosion by creating new soil and rock particles

What are the effects of weathering on rocks?

• Weathering only affects the color of rocks

• Weathering can cause rocks to break down and change.

• Weathering causes rocks to become stronger

• Weathering has no effect on rocks

How does erosion affect the landscape?

• Erosion has no impact on the landscape

• Erosion creates new rocks and soil

• Erosion changes the landscape by wearing down rocks and soil.

• Erosion has no effect on the rocks and soil

What are some ways to prevent erosion?

• Planting vegetation, building retaining walls, using mulch or gravel, and creating barriers such as terraces or check dams.

• Pouring concrete over the land

• Leaving the land bare and exposed

• Using fireworks to break up the soil

Describe how water can create features like canyons and valleys through erosion.

• Wind erodes rock and soil, creating canyons and valleys

• Water freezes and expands, creating canyons and valleys

• Plants grow and push rocks and soil, creating canyons and valleys

• Water erodes rock and soil over time, creating canyons and valleys.

What are some human activities that contribute to weathering and erosion?

• Painting, singing, dancing, and playing video games

• Mining, construction, agriculture, and deforestation (cutting down trees)

• Skiing, skydiving, mountain climbing, and bird watching

• Fishing, baking, swimming, and reading

Explain the difference between weathering and erosion.

• Weathering creates new rocks, while erosion destroys rocks.

• Weathering only occurs in deserts, while erosion only occurs near water.

• Weathering breaks down rocks, while erosion transports the weathered materials.

• Weathering and erosion are the same process with different names.