Soils

Front

Which of the following is NOT one of the three layers of soil? Options: topsoil, undersoil, subsoil, bedrock

Back

undersoil

Front

Which layer of soil is on the top? Options: topsoil, subsoil, bedrock, dirt

Back

topsoil

Front

What layer of soil is in the middle? Options: topsoil, bedrock, minerals, subsoil

Back

subsoil

Front

Humus is...

Back

the dead parts of plants and animals in soil.

Front

What part of the topsoil most likely made the topsoil feel gritty when rolled into a ball and it falls apart? Options: clay, sand, silt, humus

Back

sand

Front

Which of the following is the largest particle in soil? Options: sand, silt, humus, clay

Back

sand

Front

The texture of soil depends mainly on

Back

the size of the particles in the soil.

Front

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? Options: clay, sand, humus, silt

Back

clay

Front

What is soil made of?

Back

Weathered rock, decomposed plants and animals, air and water

Front

What are the three soil particles that we use to classify soils?

Back

clay, sand, and silt