fossils Practice

A fossil is:

• The remains of an organism that lived 1 month ago.

• The remains or traces of an organism that lived long ago.

This tooth fossil is an example of:

• Hard body part

• Soft body part

Which of the following can become a fossil?

• A fish that died under the sea.

• a dinosaur that was burned in fire.

What happens to most plants and animals after they die?

• Some of their bodies will be destroyed by wind/ water/ or other animals.

• All of their bodies become fossils.

Where are fossils usually found?

• 
• 

Some fossils can be made of:

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• 

Answer explanation

Organisms are made of cells, but most known fossils are made of minerals.

How do the cells get replaced by minerals?

After the organism is buried, water enters the organism's body. This water contains many minerals.

Over time, the minerals in the water form inside the organism's body. At the same time, the organism's cells start dissolving in the water.

Finally, the body will be replaced by minerals.

By looking at this fossil, we can tell that this organism had:

• Gray skin.

• A round body.

• A fin on its back

Compare this fossil to modern organisms of today.

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Organisms preserved in ice and amber are fossils.

• True

• False

Animals that no longer found on earth are

• Extinct

• Exist