Geologic Time Checkpoint Review

Last updated over 3 years ago

6 questions

Last updated over 3 years ago

6 questions

Question 1

The Earth is approximately 4.6 billion years old. How much of this time is considered to be Precambrian time?

10% of Earth's History

90% of Earth's History

All of the time after the dinosaurs extinction

All of the time since the big bang

Question 2

Fossil A is older than Fossil B

Fossil C is 50 million years old

Fossil D is older than the last mass extinction

There is no way of determining absolute age

Question 3

20,000 - 40,000 years old

50,000 - 70,000 years old

75,000+ years old

Question 4

Layer A is older than B

The sediments in layer B were deposited before those in layer A

Layers A and B are probably about the same age

Layer B probably contains more radioactive isotopes than layer A

Question 5

500

250

125

75

Question 6

2000

4000

6000

8000

Question 1

10% of Earth's History

90% of Earth's History

All of the time after the dinosaurs extinction

All of the time since the big bang

Question 2

Fossil A is older than Fossil B

Fossil C is 50 million years old

Fossil D is older than the last mass extinction

There is no way of determining absolute age

Question 3

20,000 - 40,000 years old

50,000 - 70,000 years old

75,000+ years old

Question 4

Layer A is older than B

The sediments in layer B were deposited before those in layer A

Layers A and B are probably about the same age

Layer B probably contains more radioactive isotopes than layer A

Question 5

500

250

125

75

Question 6

2000

4000

6000

8000