Soils

Which rock particles will remain suspended in water for the longest time?

• pebbles

• silt

• clay

• sand

Which of the following is NOT one of the three layers of soil?

• topsoil

• undersoil

• subsoil

• bedrock

The texture of soil depends mainly on

• the types of plants that grow in the soil.

• the size of the particles in the soil.

• the color of the soil.

• the number of worms in the soil.

Soil is made of

• Weathered rock

• decomposed plants and animals

• air and water

• all of the above

Tags

NGSS.MS-LS2-3

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

• sand, dirt, and soil

• clay, sand, and silt

• silt, loam, and sandy loam

• clay, salt, and pebbles

What horizon is just below the topsoil?

• soil

• subsoil

• topsoil

• terrace farming

Which horizon of soil contains leaf litter, and other organic matter?

• O - Humus/Organic

• A - Topsoil

• B - Subsoil

• R - Bedrock

The rock particles in soil arranged from largest to smallest are

• Sand, clay, and silt.

• Silt, sand, and clay.

• Sand, silt, and clay.

• Clay, sand, and silt.

The layer of loose, weathered material on Earth's surface in which plants can grow is

• topsoil

• humus

• weathering

• bedrock

Tags

NGSS.MS-LS2-3

Which of the following is the largest particle in soil?

• sand

• silt

• humus

• clay