Soil and Soil Formation

Which of the factors involved in soil formation?

• Parent material

• Temperature

• Biota

• Climate

• Topography

Which of the following shows where soil formation happens at a faster rate?

• Cold dry climate

• Steep slopes

• Valleys and flat areas

Which of the characteristics describes C horizon of soil profile?

• Consist rocks and big particles

• Have large masses of rocks

• Poor in organic matter

• Plants root do not penetrates into the layer.

• Have less humus

In the process of soil formation the rocks are worn away by the agents of :

• Water

• Wind

• Micro organisms

• Rivers

• Glaciers

Tags

NGSS.MS-ESS2-4

Place the following horizons in order from top to bottom: bedrock, topsoil, subsoil, humus, parent material/weathered bedrock

• Humus, Topsoil, Subsoil, Parent Material/weathered bedrock, Bedrock

• Humus, Topsoil, Parent Material/weathered bedrock, Subsoil, Bedrock

• Topsoil, Humus, Subsoil, Parent Material/weathered bedrock, Bedrock

• Topsoil, Humus, Parent Material/weathered bedrock, Subsoil, Bedrock

Why is topsoil darker than all other levels of soil?

• It contains all the darker colored minerals.

• It contains volcanic rock.

• It contains more organic matter.

• It contains bits of burned trees.

Tags

NGSS.MS-LS2-3

Which soil horizon is contains decomposed plants and animals?

• A Horizon

• B Horizon

• C Horizon

• O Horizon

Tags

NGSS.MS-LS2-3

Soil formation begins with the weathering of_______.

• Humas

• Subsoil

• Litter

• Bedock

Tags

NGSS.MS-ESS2-2

The parent rock from which soil is formed influences :

• Colour and texture

• Moisture

• Mineral content

• Chemical property

• Permeability

Soil is a loose mixture of:

• Organic materials.

• Organic and inorganic materials.

• Dead and decaying micro organisms.