Fossils Review

When this ancient shellfish died, its remains were buried in the mud When this ancient shellfish died, its remains were buried in the mud. Over time, mud filled in all of the spaces around the shell. The shell then broke down and the mud hardened. Which type of fossil was formed? A petrified fossil An imprint A mold A cast

A cast

Which of the following can a scientist learn from a fossil of a shark’s tooth? How fast the shark swam How large the shark was How good the shark’s eyesight was What the shark ate just before it died.

How large the shark was

How is a cast formed? minerals, sand, or mud fill in the spaces of a mold A living thing gets trapped in sap. A living thing becomes petrified. The remains of a living thing are buried in mud.

Minerals, sand, or mud, fill in the spaces of a mold.

Which type of fossil does the picture show? Amber Cast Imprint Mold

cast

A paleontologist finds a fossil of a fish on top of a mountain A paleontologist finds a fossil of a fish on top of a mountain. She can infer that the area was once…… A desert Much warmer Much colder underwater

underwater

Long ago, small organisms became trapped in sticky tree sap that hardened. What is the hardened sap called? An imprint A cast Amber Humus

amber

When fossilized trees have turned into rock, they are called….. Casts Petrified Imprints Molds

Petrified

A __________ is the preserved remains of plant or animal that lived long ago. Fossil Glacier Mineral Paleontologist

fossil

A __________ is a scientist that studies fossils. Chemist Doctors Geologist Paleontologist

Paleontologist

What could the fossil of a tooth tell us about an animal from long ago? How many babies it had If it snowed What the animal might have eaten Where it lived

What the animal might have eaten

Fossils of a fish are found under land where cows now live Fossils of a fish are found under land where cows now live. You know that … This land was once under the ocean. The fish were dropped by flying birds. Fish used to live on land. Farmers fed the fish to the cows

This land was once under the ocean

Which of these is a fossil? A young tree A mouse A large fish A dinosaur bone

A dinosaur bone

Fossils are found mostly in Animals Rocks Trees Water

rocks

imprint shark shell bone

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