Geologic Time

Question 1

oceans✔ fossilsthe atmosphere

Revolt · Accepted Answer

B: fossils

Question 2

How are eras and periods of the geologic time scale named?

Revolt · Accepted Answer

A: They are named for the places where geologists first described rocks or fossils from that time.

Question 3

From what material did the moon form?

Revolt · Accepted Answer

A: material from Earth

Question 4

Use the drop-down menus to match each description to the geologic era it describes.

Revolt · Accepted Answer

: Mesozoic; : Cenozoic; : Paleozoic

Question 5

Fill in the blanks to complete each statement about the age of Earth.

Revolt · Accepted Answer

⇒ billion: 139241; : radioactive

Question 6

1 ✔ 2 3 4

Revolt · Accepted Answer

B: 2

Question 7

Paleozoic ✔ MesozoicCenozoic

Revolt · Accepted Answer

B: Mesozoic

Question 8

Which processes produced heat that contributed to the formation of Earth’s different layers? Check all that apply.collision of materialscompaction of materialscooling of low-density metalsradioactive decaysinking of high-density metals

Revolt · Accepted Answer

A: collision of materials; B: compaction of materials; D: radioactive decay

Question 9

✔ PrecambrianPaleozoicCenozoic

Revolt · Accepted Answer

A: Precambrian

Question 10

Question 10

Revolt · Accepted Answer

radioactive

Geologic Time Answers

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