Earth Science Weathering and Soil formation

Question 1

Maps that show changes in elevation.

Accepted Answer

topographic

Question 2

The deep red colors of soils found in Georgia and other warm, humid regions is caused by

Accepted Answer

oxidized iron

Question 3

Which of the following is a major factor of soil formation?

Accepted Answer

slope, time, climate

Question 4

Which soil is most permeable?

Accepted Answer

sand

Question 5

The general process that changes solid rock into sediments is called...

Accepted Answer

weathering

Question 6

Which is best evidence that biological activity affects the physical weathering process.

Accepted Answer

plant roots breaking apart large rocks

Question 7

Which horizon has the highest percent of organic material?

Accepted Answer

A

Question 8

As water freezes it ...

Accepted Answer

expands

Question 9

When water mixes with carbon dioxide from the air what can it form?

Accepted Answer

carbonic acid

Question 10

The longer a rock is exposed at the surface, the more weathered it becomes.

Accepted Answer

ture

Question 11

What do you call the heavier bold lines on a topographic map?

Accepted Answer

contour index

Question 12

Rocks of different compositions weather at different rates.

Accepted Answer

true

Question 13

Mechanical weathering breaks rocks into smaller pieces without changing their composition.

Accepted Answer

true

Question 14

Mechanical weathering results in pieces of rock that are the same as the parent rock in...

Accepted Answer

mineral content

Question 15

What happens to iron-bearing rocks when they are exposed to water and air?

Accepted Answer

they oxidize

Question 16

Humus in soil increases soil fertility.

Accepted Answer

true

Question 17

Good soil has what percent of inorganic materials?

Accepted Answer

50

Question 18

The difference between mechanical and chemical weather is...

Accepted Answer

the way they affect the composition of rock

Question 19

Soil that contains a mixture of all grain sizes,.

Accepted Answer

loam

Question 20

As a rock breaks into smaller pieces, the surface area...

Accepted Answer

increases.

Question 21

Which of the following is an agent/mechanism of both mechanical and chemical weathering?

Accepted Answer

water

Question 22

Which soil horizon would be the lightest in color?

Accepted Answer

C

Question 23

Humus in soil does NOT help the soil hold water.

Accepted Answer

false

Question 24

Which horizon has the least amount of biological activity?

Accepted Answer

C, Bedrock

Question 25

Plant roots pry rocks apart. What type of weathering?

Accepted Answer

mechanical/physical

Question 26

What type of lines show distances in east or west of the prime meridian? run north to south.

Accepted Answer

longitude

Question 27

Abrasion is caused by...

Accepted Answer

sediments bumping into rock

Question 28

Heat and heavy rainfall decrease the rate of chemical weathering.

Accepted Answer

false

Question 29

Process the removes soil material from the horizon above through being dissolved in water.

Accepted Answer

leaching

Question 30

lighter in color, a bit of hums, some plant roots, elements leeched Which horizon?

Accepted Answer

B

Question 31

Which rock type is formed as rocks are altered/changed due to heat and pressure?

Accepted Answer

metamorphic

Question 32

A chemical reaction between a chemical compound and water is called...

Accepted Answer

Hydrolysis

Question 33

Weather patterns observed over about 10 years is called...

Accepted Answer

climate

Question 34

The soil horizon that is made up of partially broken bedrock is...

Accepted Answer

C

Question 35

Mechanisms of mechanical weathering include

Accepted Answer

all of these

Question 36

Acidic rainwater dissolving minerals. What type of weathering?

Accepted Answer

chemical

Question 37

What type of lines run parallel to the equator?

Accepted Answer

Latitude

Question 38

Which soil horizon contains most organic matter?

Accepted Answer

A

Question 39

Sediment being carried from one place to another bump into other rocks. What type of weathering

Accepted Answer

mechanical/physical

Question 40

Humus in soil binds together mineral grains.

Accepted Answer

true

Question 41

The rate of chemical weathering is higher when

Accepted Answer

precipitation is higher

Question 42

The main reason farmers use crop rotation is to slow down the process of...

Accepted Answer

nutrient depletion

Question 43

Which of the following is most likely to smooth and round rocks found in stream-beds?

Accepted Answer

abrasion

Question 44

Liquid water expanding as it becomes ice inside a crack? What type of weathering?

Accepted Answer

physical/mechaical

Question 45

What rock type is created from the cooling of magma and lava?

Accepted Answer

Igneous

Earth Science Weathering and Soil formation

Questions 45

Earth Science Weathering and Soil formation

Questions 45