3rd grade Fossils review

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?

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

• This kind of fish had once lived on land.

• The area used to be filled with water.

• The area used to be very cold.

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A boy was hiking through a desert with his family. He found a fossilized insect that has pinchers for eating grass while he was digging in the sand. What can the boy conclude about the habitat of the once-living insect?

• The area was always a desert and someone put the fossil there.

• The area was once covered in water and must have had sea animals.

• The area must have once had lots of grass because of the characteristics of the fossil.

• The area has always been a desert because of the location where the fossil was found.

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The picture shows a fossil. What was the most likely habitat of the fossilized organism?

• Lake

• Forest

• Plateau

• Mountains

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How did scientists first learn about dinosaurs?

• by studying their fossils

• by reading about them

• by watching movies

• by looking at pictures

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Where are most fossils formed?

• near volcanoes, because the high heat of the lava helps to form fossils

• in glaciers, because fossils are created when an organism is frozen quickly

• in sedimentary rock, because being buried in sediment helps to form fossils

• near earthquakes, because the shaking ground traps organisms to create fossils

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Which of the following is an example of how a fossil was formed?

• A dinosaur died in the mud and minerals filled in the bones, keeping their shape.

• A dinosaur died during a very icy storm, and its bones hardened from the cold.

• A dinosaur died in the summertime, and the hot Sun made the bones strong.

• A dinosaur died near a lake and the water filled in the bones, keeping their shape.

What is a fossil?

• a rock that is millions of years old

• the model created by a scientist to study dinosaurs

• the remains of an organism studied by scientists

• an organism that has become extinct

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Which type of scientist studies life that existed long ago, mostly by studying fossils?

• Biologist

• Zoologist

• Botanist

• Paleontologist

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Which feature helps the most to identify the organism as a plant?

• size

• color

• smell

• shape

The picture shows a piece of amber. 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.