Question

How many ice ages do scientist estimate have occurred during the last billion years?

3
5*************************************
6
7

How often do scientists say that recent cycles of advancing and retreating ice sheets occur?

approximately every 100,000 years*******
approximately every 50,000 years
approximately every 10,000 years
approximately every 1,000 years

Which is faster: the advance or the retreat of an ice sheet?

The advance of an ice sheet is faster
The retreat of an ice sheet is faster*********************************

Which of the following is NOT considered geologic evidence of past ice ages?

Glacial till and erratics
Loess
Ice shelves****************************
rock striations

Which of the following is NOT believed to be a cause of ice ages?

Changes in the orbit of the earth around the sun*****************************

Changes in the positions of the continents

Changes in volcanic

Variations in the energy output of the sun

Answers:

1.B
2.A
3.B
4.C
5.A

Thank You.

Answer 1

I agree with your answers. However, I am not a science tutor, so be sure you check your book for the answers.

Answer 2

they were all right. thank you.

Answer 3

1.B
2.A
3.B
4.C
5.A
6.D
7.True
8.True
9.True
10.False

Answer 4

1. B - 5

2. A - approximately every 100,000 years

3. B - The retreat of an ice sheet is faster.

4. C - ice shelves

5. A - Changes in the orbit of the Earth around the Sun

6. D - Steppe

7. A - True

8. A - True

9. A - True

10. B - False

Answer 5

^^^ Answers are still right as of 3/27/2018 ^^^

Answer 6

Keith is correct.

Answer 7

Still correct as of 3/24/21

Answer 8

still correct as of 3/21/22

Answer 9

STILL 100% !!

Answer 10

ye he right