Fossils Answers
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Which is a way that paleontologists have contributed to humans' understanding of the history of life?
A
They found evidence that climate has not changed significantly.B
They grouped organisms by the period in which they existed.C
They discovered that the first humans lived with dinosaurs.D
They learned that life has existed since Earth was created.2
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Which correctly lists three materials that preserve soft tissues in fossils?
A
amber, minerals, and sedimentB
minerals, permafrost, and amberC
permafrost, amber, and tarD
sediment, minerals, and tar3
How do organisms form carbon films?
A
Organisms turn into rock.B
Residue is left on rocks when organisms decay.C
Hollow forms are left in sediment by decaying organisms.D
Organisms leave evidence of their activities, such as footprints.4
Which type of fossils form from hardening sediment?
A
castsB
tar pit fossilsC
carbon filmsD
amber fossils5
Study the timeline.
A
130 million years agoB
1.5 billion years agoC
2.5 billion years agoD
4.1 billion years ago6
Which statement explains something that the fossil record indicates?
A
Earth is is still a very young planetB
Mammals have always existed on Earth.C
Mass extinctions have occurred several times on Earth.D
The amount of water on Earth has decreased over time.7
How are casts formed by decaying organisms?
A
Organisms turn into rock over time.B
Organisms leave carbon residue on a rock.C
Organisms leave impressions in sediment that hardens into rock.D
Impressions left by organisms are filled in with sediment that hardens into rock.8
Which part of an organism is preserved in cast and mold fossils?
A
skinB
boneC
muscleD
soft tissue9
Study the timeline.
A
Humans have only recently existed on Earth.B
Organisms originally lived only on land.C
Life on Earth started before water formed on Earth.D
Multicellular life evolved before complex single-celled life.10
What happens to soft parts of organisms when cast fossils form?
A
They decay.B
They petrify.C
They form carbon films.D
They become part of the fossil.Did you find these answers helpful?
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