Changes to Earth's Surface
Sedimentary Rocks
Landforms
Formation of Fossil Fuels
Fossil Fuels
100
What is erosion?
The movement of sediments from one location to another.
100
What are small particles of rock?
sediments
100

A U-shaped valley is formed by...

A glacier.

100

What is oil formed from?

decayed plants and animals are buried in layers and over a long period of time, heat and pressure, turn them into oil

100
What are the three main types of fossil fuels?
coal, oil, and natural gas
200
Canyons are formed by what? How long do they take to form? Is it slow or fast?
Rivers eroding the land. It takes deep canyons hundreds of thousands of years to form. It happens really slowly.
200
What is the type of rocks fossils are formed in?
sedimentary rocks
200

A V-shape that is formed by running water is a...

canyon

200
What ancient ecosystems is coal formed from?
Prehistoric flooded swamps and forests.
200

What is required in the formation of coal or oil or natural gas?

organic matter, dead plants and animals, time, heat and pressure

300
Weathering does what to rocks, mountains and land?
Breaks it down into smaller pieces called sediments.
300

What step in sedimentary rock is the pressing down or squeezing of sediments tightly together?

compaction

300
Are the oldest fossils found in the top or bottom layers of sedimentary rocks?
The bottom layer.
300

How long ago were coal, oil, and natural gas deposits formed?

millions of years ago

300
Why are fossil fuels called "fossil fuels"?
They form from the remains of ancient organisms.
400
What are the three processes that gradually change Earth's surface?
weathering, erosion, and deposition
400

What is the step called where sediments are glued together?

cementation

400

Sediment that is dropped in a new location is called...

deposition

400

What is coal formed from?

decayed remains of plants buried in many layers over a long period of time, heat and pressure turn them into coal

400

What is petroleum?

oil

500
Name at least two rapid changes to Earth's surface.
Earthquakes, landslides, avalaches, etc.
500

What do sedimentary rocks look like?

Layers. (Think about the Grand Canyon.)

500

How and where does a delta form?

Running Water where sediments are deposited at the mouth of the river

500
Where are fossil fuels usually found?
Between layers of sedimentary rocks.
500

Fossil Fuels are renewable. True or False?

False.

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