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Weathering & Erosion
Science Unit 4 Lesson 4
| Question | Answer |
|---|---|
| What can change rocks? | Ocean waves, rushing rivers, pouring rain and wind |
| What is weathering? | The process that wears away or breaks down rock |
| What is the process that wears away or breaks down rock? | Weathering |
| What are the two main types of weathering? | Chemical and Physical |
| What is one way chemical weather occur? | When rain mixes with chemicals in the air and interacts with rocks |
| What is it called when rain mixes with chemicals in the air and interacts with rocks? | Chemical weathering |
| What is another way chemical weathering can occur? | Plants rot and produce chemicals |
| What is it called when plants rot and produce chemicals? | Chemical weathering |
| Describe the ways chemical weather can occur. | Rain mixing with chemicals in the air Plants rot and produce chemicals |
| What is evidence chemical weathering has occurred? | Deep pits or holes in rocks |
| If there are deep pits or holes in rocks, what is it a sign of? | Chemical weathering |
| What does chemical weather cause in rocks? | New materials to form |
| What is physical weathering? | When wind, water, ice, or plants cause rock to flake or crack |
| What is it called when wind, water, ice, or plants cause rock to flake or crack? | Physical weathering |
| What does physical weathering cause rock to do? | Break into smaller pieces |
| What kind of weathering breaks rocks into smaller pieces? | Physical weathering |
| What are glaciers? | Large sheets of slow-moving ice that cut and crack rock as they scrape over land |
| What are large sheets of slow-moving ice that cut and crack rock as they scrape over land? | Glaciers |
| What is erosion? | the process in which weathered particles are removed from land |
| What the process of weathered particles being removed from land? | Erosion |
| What can pick of up particles and rock bits and move them? | Rivers, streams, water from rain and snow |
| What can rivers, streams, and water from rain/snow do? | Pick up particles and rock bits |
| What can move particles great distances? | Wind |
| What moves sand to/from a beach? | Waves |
| What is deposition? | When particles that have been moved by erosion are deposited in new locations |
| What is it called when particles that have been moved by erosion are deposited into new locations? | Deposition |
| What happens when particles are deposited in one place over time | New landforms are created |
| How are new landforms created? | When particles are deposited in one place over time |
| When does weathering, erosion, deposition happen? | All the time |
| How long can it take to change a landform? | Thousands of years |
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