Soil

The loose, weathered material on Earth's surface is called

• humus

• litter

• soil

• rust

Fungi, bacteria, and worms are soil

• weatherers

• litter

• materials

• decomposers

The movement of rock particles by wind, water, ice, or gravity is called

• erosion

• weathering

• abrasion

• drought

Tags

NGSS.MS-ESS2-2

In the early 1930s, what did George Washington Carver teach farmers?

• ways to chemically weather rocks

• methods of soil conservation

• ways to end the Dust Bowl

• methods for making soil less fertile

What kind of soil is best for growing plants?

• Loam

• clay soil

• humus

• sand soil

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The three major fossil fuels are coal, oil, and

• Wood

• uranium

• natural gas

• electricity

Geologists infer from the rounded, eroded shapes of the Appalachian Mts. that

• the principle of uniformitarianism does not apply

• the mountains formed recently

• the mountains are made of soft rock

• the mountains have been eroding for millions of years

Tags

NGSS.MS-ESS2-2

The most important factors in determining the rate of weathering are

• carbon dioxide and acid rain.

• abrasion and acids from plant roots.

• animal actions and oxygen.

• rock type and climate.

When earthworms add their wastes to the soil, then die and decay in the soil, they are contributing to the formation of

• Silt.

• humus.

• litter.

• clay.

Tags

NGSS.MS-LS2-3

In a cross section of soil, the B horizon consists of

• clay, minerals, and little humus.

• humus only.

• partly weathered rock.

• topsoil.