Science CA #2 Review

What is a fossil?

• an organism that has become extinct

• the remains of an organism studied by scientists

• the model created by a scientist to study dinosaurs

• a rock that is millions of years old

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Scientists discovered the fossilized remains of an unidentified animal. They can tell from its remains that it had gills and fins, but no legs. What conclusion about the animal can they draw from the evidence?

• It lived in the water and on land.

• It was a land mammal.

• It had legs that did not fossilize.

• It lived in the water all the time.

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Which of the following would be the best way to create a model of a fossil?

• making a footprint in mud and filling it with water

• pressing a hand onto the sidewalk and tracing it with chalk

• making a footprint in sand and filling it with clay

• pressing a hand into snow and taking a picture of it

The pictures show a fossil of an extinct fish and the area where it was found.

What is the best explanation for the location of the fossil?

• The area used to be filled with water.

• The area used to be very cold.

• This kind of fish was often eaten by land animals.

• This kind of fish had once lived on land.

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Which statement best describes how an organism becomes fossilized in amber?

• A mosquito is caught in tree resin that hardens into rock.

• The bones of a frog buried in sediment are replaced with tree resin.

• A dinosaur is trapped in lava, and the heat turns the bones into amber.

• The body of a snail leaves an impression in amber, and it turns into rock.

Which list shows the correct five steps in a dinosaur becoming a fossil?

• 1. 1. Sediment builds around the body.

  2. 2. The body is buried in sediment.

  3. 3. The hard parts of the body decay.

  4. 4. Minerals and sediment harden.

  5. 5. Minerals and water fill in empty spaces.

• 1. The body is buried in sediment.

  2. 2. Sediment builds around the body.

  3. 3. The hard parts of the body decay.

  4. 4. Minerals and water fill in empty spaces.

  5. 5. Minerals and sediment harden.

The picture shows the fossil of a dinosaur bone. 

Which statement best describes how this fossil was formed?

• Bone replaced minerals over a short period of time.

• Minerals replaced bone over a short period of time.

• Bone replaced minerals over a long period of time.

• Minerals replaced bone over a long period of time.

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Which describes where fossils are most likely found?

• Fossils are found on the ocean floor.

• Fossils are found in sedimentary rocks.

• Fossils are found near volcanoes.

• Fossils are found in deserts.

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Match the picture of the fossil to the way it was most likely formed.

• The organism was buried under layers of sediment, leaving an impression of its body over time

• The organism left a trail in the mud that was buried, the mud hardening over time

• The organism was trapped by the resin of the tree, which hardened over time

• The organism was buried and decayed, leaving an impression of its shape that was filled with minerals

Tags

NGSS.MS-LS4-1

Match the picture of the fossil to the way it was most likely formed.

• The organism was buried under layers of sediment, leaving an impression of its body over time

• The organism was trapped by the resin of the tree, which hardened over time

• The organism left a trail in the mud that was buried, the mud hardening over time

• The organism was buried and decayed, leaving an impression of its shape that was filled with minerals

Tags

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