Fossils1 Flashcards

(8 cards)

1
Q

What are fossils?

A

Preserved remains of animals and plants found in sedimentary rocks

Fossils provide evidence of past life and can help scientists understand the history of Earth.

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2
Q

How do fossils form?

A

When an animal or plant is buried quickly in a location with very little air

This process typically occurs in sedimentary environments such as sea beds or lake beds.

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3
Q

Why are fossils primarily found in sedimentary rocks?

A

Sedimentary rocks form in water where conditions are suitable for fossil preservation

Fossils require specific conditions to form, including rapid burial and low oxygen levels.

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4
Q

What happens to the soft parts of animals after they die in the sea?

A

They rot away

This decay process is a crucial step before fossilization can commence.

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5
Q

What replaces the bones of the animal during fossilization?

A

Minerals in the water

Over time, these minerals can crystallize and harden, preserving the shape of the bones.

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6
Q

What is the significance of the dinosaur fossil mentioned?

A

It was formed about 150 million years ago and is found in limestone

This indicates the age of the fossil and the type of sedimentary rock it is associated with.

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7
Q

Fill in the blank: Fossils can only form if the animal or plant is buried quickly in a place where there is very little _______.

A

air

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8
Q

True or False: Fossils can form in igneous rocks.

A

False

Fossils are primarily found in sedimentary rocks due to their formation processes.

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