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Soil-Cotner

Last updated about 6 years ago

13 questions

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Question 1

1.

Rocks in C Horizon are

totally solid

broken into pieces and mixed with minerals

mixed in with water

mixed in with roots

Question 2

2.

Which Horizon has the most fertile soil?

A Horizon

R Horizon

O Horizon

C Horizon

Question 3

3.

Which of the following causes rocks to break down into smaller pieces?

weathering

erosion

deposition

cementation

Question 4

4.

In which layer of soil would you plant flowers and vegetables?

topsoil

subsoil

bedrock

parent rock

Question 5

5.

O Horizion is rich in

bedrock

organic matter

sand

none of the above

Question 6

6.

Soil contains only non-living things

True

False

Question 7

7.

Soil is made of

air

rock

decomposed leaves

all of the above

Question 8

8.

The soil profile is a vertical coss-section of soil. It shows all the layers of soil in order from top to bottom, from humus to bedrock. Soil scientists drill down into the ground and use spades and knoives to collect soil samples. Studying and describing soil helps people decide what to use for it. Soil is used in many different ways. Of course, it is used to grow crops on a farm or trees in a forest. It's also used to purify water; it acts as a filter that catches some viruses, oils, metals and excess nutrients. Many beauty products contain clay from soil. Some organic soils like peat, can even be used for fuel. It is important to study soil because.....

it is the only source of fuel on Earth

it produces water for the plants

it can have many helpful uses

it has several distinct layers

Question 9

9.

Different environments have different types of soil. For example, forest soil is generally dark, damp, and full of humus. This type of soil is perfect for growing trees and other plants that need a lot of water. The soil near a lake often contains a lot of sand. Sandy soil is drier and lighter in color than forest soil. Plants that don't need a lot of water, like cactus and palm trees, grow well in sandy soil.

Forest soil is lighter in color than sandy soil

Forest soil has less humus than sand soil

Forest soil has more moisture than sandy soil

Forest soil supports plant life, but sandy soil does not support any plants

Question 10

10.

Soil and dirt are the same thing

True

False

Question 11

11.

Soil is a mixture of minerals, organic matter, water, and air. The minerals come from bits of broken-down rock. Organic matter is material that is alive or used to be alive. It includes leaves, twigs, bugs, and many microscopic, or tiny, organisms like bacteria and fungi. In fact, there are more microorganisms in a handful of soil than there are people on the planet! Soil is needed for life to exist on Earth. It contains many nutrients that help plants grow. Then the plants provide nutrients that help animals grow. Which of these are NOT a natural part of soil?

pebbles of different sizes

bottle caps

dead worms

plant roots

Question 12

12.

This Horizon is the area that most of the biological activity occurs. Plant roots, worms, insects, and bacteria are found here.

B-Horizon

R Horizon

A Horizon

C-Horizon

Question 13

13.

This Horizon cosists of solid, unweathered rock

R-Horizon

A- Horizon

B-Horizon

o-Horizon