Chapter 12- Soils

_____________is a complex plant-supporting system made up of disintegrated rock, remains and wastes of organisms, water, gases, nutrients and microorganisms.

• Rocks

• Soil

• Volcanic ash

• Compost

There are five factors that influence soil formation. Pick the correct 3.

• climate

• organisms

• landforms

• soil

• place

What % of the earth's land surface used for agriculture?

• 38

• 40

• 42

• 44

The base material that is in a particular location that soil is made of is called

• bedrock

• crust

• parent material

• humus

____________ is the continuous mass of solid rock that makes up Earth’s crust.

• bedrock

• hardrock

• parent material

• depostion

The physical and chemical processes that break down rocks and minerals into smaller particles is known as _______________.

• parent material

• erosion

• overgrazing

• weathering

What are the two kinds of weathering?

• human contact

• physical

• chemical

• clear cutting

What is the drop off of eroded material at a new location called?

• desertification

• decomposition

• deposition

• degredation

The break down of living organisms such as leaves, dead animals, etc is called

• decomposition

• depostion

• degredation

• erosion

Tags

NGSS.MS-LS2-3

What is the partially decomposed organic matter that is made into soil called?

• humerous

• humus

• hummerous

• desertification