What Is Soil

What do you call the layer of soil just under the topsoil?

• humus

• clay

• subsoil

• rock

You dig a small hole in the soil and the next day it rains. The hole fills with water, but does not empty even after several days of dry weather. What is the soil mostly made of?

• clay

• sand

• humus

• silt

Choose all that apply. Soil is made up of

• humus

• tiny grains of rocks

• water

• air

This layer is made up of living and decomposed materials such as leaves, plants and bug. What is it?

• silt

• sand

• clay

• loam

• humus

Tags

NGSS.MS-LS2-3

This soil has a mixture of humus, sand, silt, and clay. What is it?

• clay

• silt

• loam

• sand

• humum

This soil has very, very, tiny grains of rocks. What is it?

• humus

• silt

• sand

• loam

• clay

This soil has grains of rock that are too small to be seen with your eyes alone. What soil is it?

• loam

• clay

• sand

• silt

• humus

Soil is created when this breaks down

• rocks

• squirm the worm

• a tree

• water

Tags

NGSS.4-ESS2-1

Why is soil an important natural resource?

• there is treasure buried there

• it has dead organisms in it

• we use it to build homes

• it helps plants grow

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

This particle is the smallest grains of rock found in soil. What is it?

• humus

• silt

• sand

• loam

• clay