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Unit 4 Questions

Unit 4 Review

QuestionAnswer
Where does the formation of coal begin? in a swamp with a lot of big plants
Sedimentary rocks are formed when sediments are deposited into layers. What happens next? The layers are compacted and then cemented.
Where does the formation of oil and natural gas start? in the ocean with a lot of tiny sea organisms
A delta is formed when sediments are dropped off and builds up at the end of a river. What is the process of dropping off sediments called? Deposition
How does a U-shaped valley form? Ice (or a glacier) weathers the mountain and erodes the sediments.
How is a canyon formed? A river weathers the rocks and erodes the sediments.
A fossil of a fish was discovered in an area that is now a mountain. What does the discovery of this fossil tell us about the area in the past? It was once a lake or ocean.
Why are coal, oil, and natural gas called nonrenewable resources? They cannot be replaced in a short amount of time because they take millions of years to form.
Fossil fuels form when organic matter is covered with sediments. What else is needed for fossil fuels to form? Time, heat, and pressure
How are fossil fuels and sedimentary rock formation similar? They both need time, layers, and pressure
How does a river delta form? A river slows down at the mouth of the river and the sediments are deposited.
What is the process called that moves sediments? Erosion
What is the process called that breaks rocks into sediments? Weathering
What is the process called that drops sediments in a new place? Deposition
How is a sand dune formed? Wind erodes the sand and deposits the sand into hills.
Why are the wind, the sun, water, and plants called renewable resources? They can be replaced in a short amount of time.
What would the peaks of an older mountain range look like? The peaks of an older mountain range would be SMOOTH and ROUNDED.
What would the peaks of a younger mountain range look like? The peaks of a younger mountain range would be STEEP and POINTY.
Created by: brannics
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