Chpt 6 Grade 8 Flashcards Preview

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Flashcards in Chpt 6 Grade 8 Deck (17)
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1
Q

T or F birds are most likely to be fossils

A

True

2
Q

T or F to uncomformities question

A

T

3
Q

T or F earth alone has fertile soil bc of living things

A

True

4
Q

What is preserved evidence of organisms

A

Fossils

5
Q

What is a large mass of igneous rock pushed together

A

Intrusion

6
Q

What’s the cross section of soil and bedrock

A

Soil profile

7
Q

What is the order of rocks

A

Geologic column

8
Q

What’s a break of record / time in rocks

A

Uncomformity

9
Q

Say order of bedrock, o horizon, c horizon, b horizon, a horizon
Match it with description of - topsoil, loose organize debree, subsoil, partially weathered bedrock

A

1- o horizon - loose organic debree
2- a horizon - topsoil
3- b horizon - subsoil
4 - c horizon - partially weathered rock

10
Q

Why are soils in tropical regions not fertile

A

Too much water durians out nutrients carrying away the topsoil

11
Q

What does the law of superposition state

A

Rock is older than the rock above it and younger than the rock below it

12
Q

MC law of superposition question

A

D

13
Q

Mainf eson for something question MC

A

Climate

14
Q

mc not means of producing fossils ?

A

Laying on topsoil in sun

15
Q

3 tools geologists use to determine age of earth

A

Carbon 14, varves, tree rings, soil profile

16
Q

What’s the soil composition of soil where you live? Thick or thin? What’d an you do to keep it fertile

A

It’s very thick and fertile topsoil, and give it proper rotations and plant plenty of plants and try to torrent erosion

17
Q

To or F soil horizon next to bedrock is broke into tiny grains bc of layer above it

A

False bc of erosion overtime