Chpt 6 Grade 8 Flashcards Preview

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Flashcards in Chpt 6 Grade 8 Deck (17)
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1

T or F birds are most likely to be fossils

True

2

T or F to uncomformities question

T

3

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

True

4

What is preserved evidence of organisms

Fossils

5

What is a large mass of igneous rock pushed together

Intrusion

6

What's the cross section of soil and bedrock

Soil profile

7

What is the order of rocks

Geologic column

8

What's a break of record / time in rocks

Uncomformity

9

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

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

10

Why are soils in tropical regions not fertile

Too much water durians out nutrients carrying away the topsoil

11

What does the law of superposition state

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

12

MC law of superposition question

D

13

Mainf eson for something question MC

Climate

14

mc not means of producing fossils ?

Laying on topsoil in sun

15

3 tools geologists use to determine age of earth

Carbon 14, varves, tree rings, soil profile

16

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

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

17

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

False bc of erosion overtime