What answer best describes the relationship between cast fossils and mold fossils?

• Mold fossils are formed when minerals fill the cavity left by cast fossils.

• Cast fossils are formed when minerals fill the cavity left behind by mold fossils.

• Cast minerals and mold fossils are formed when animals leave a footprint in wet mud.

• Mold fossils and cast fossils are formed when dead animals are preserved in tree sap.

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How can scientists most likely find that two different extinct animals lived in similar climates?

• Their fossils are the same size.

• Their fossils are found in the same region (area).

• Their fossils are found in the same year.

• Their fossils show that they died the same way.

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Which of the following is categorized as an imprint fossil?

• an insect stuck in amber

• a leaf outline on a rock

• dinosaur bones

• petrified wood

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NGSS.3-LS4-1

How do we know that all seven continents were once connected by a landmass?

• The continents were surrounded by oceans.

• Dinosaur fossils are found on all seven continents.

• The North and South Poles are the coldest places on Earth and are frozen.

• There is different weather on the continents.

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What can we learn from studying a plant fossil?

• how long ago the plant lived

• how the plant became extinct

• how many plants lived in the area

• how many animals lived near the plants

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When we look at fossils found in layers of rock, which are the oldest fossils?

• the middle layers

• the top layers of rock

• the bottom layers

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Someone discovered a saltwater fish fossil on the shore of a freshwater lake. Why could the fossils be found there?

• The fish was left there by a fisherman.

• The fish moved across the land to get to the lake long ago.

• The fish lived in the area long ago when it was covered by an ocean.

• The fish was left there long ago by a storm.

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NGSS.3-LS4-1

What type of information can fossils provide to us?

• the color of animals from long ago

• the type of plants animals liked to eat

• the kind of organisms that lived long ago

• the type of water in an environment

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What change to Earth's surface would be seen if a volcano suddenly erupted?

• It would form a hole slowly

• It quickly changes the Earth's surface

• It starts slowly and then rapidly changes the surface of the Earth

• It starts rapidly and then slowly changes the surface of the Earth

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Rock layers in a canyon have been gradually disappearing. Which most likely explains this?

• slow wind erosion

• rapid tide changes

• rapid flowing water

• slow glacier movement

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