Notes 4.6A-4.8

Which soil horizon is considered the topsoil?

• O horizon

• A horizon

• B horizon

• C horizon

The process where minerals and organic materials are leached from upper soil layers is called:

• horizonation

• illuviation

• percolation

• weathering

Which of these is NOT a factor that impacts soil properties?

• pjarent material

• climate

• elevation

• time

Dark-colored soils typically:

• reflect more light

• absorb more light

• have poor drainage

• are slow to warm

What is humus?

• parent material

• decomposed biotic material

• mineral deposits

• clay particles

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS2-3

The ideal soil pH for most plants is approximately:

• 5.5

• 6.5

• 7.5

• 8.5

Tags

NGSS.MS-LS2-4

A watershed's outlet is defined as:

• the highest point

• the lowest point

• the ridgeline

• the catchment area

The area that determines the boundary line between adjacent watersheds is called:

• stream network

• catchment area

• continuous ridgeline

• watershed divide

Which zone of a watershed has the fastest moving water?

• source zone

• transition zone

• floodplain zone

• delta zone

In a watershed's floodplain zone:

• water moves fastest

• dissolved oxygen is highest

• water is warmer

• water is coldest