Unit 1 Lesson 5 Review

Front

What part of an organism is most likely to become a fossil?

Back

Tooth

Front

What type of organisms are most likely to form fossils?

Back

Organisms with hard parts

Front

Did some dinosaurs live in groups?

Back

Yes, some dinosaurs lived in groups.

Front

What happens when an insect gets stuck in resin and hardens into amber?

Back

It becomes a whole body fossil.

Front

What can scientists learn by studying dinosaur fossils?

Back

Scientists can learn about the behavior of dinosaurs.

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of a once-living organism.

Front

What are trace fossils?

Back

Trace fossils are evidence of the activity of organisms, like footprints or burrows.

Front

What are cast fossils?

Back

Cast fossils are formed when a mold of an organism is filled with minerals.

Front

What are mold fossils?

Back

Mold fossils are impressions left in sediment that show the shape of an organism.

Front

Why are hard parts of organisms more likely to become fossils?

Back

Hard parts like bones and teeth are less likely to decay and can be preserved.