Soils

What is the process by which rock is broken down into smaller particles by exposure to the elements?

• Weathering

• Erosion

• Profiling

• Deconstructtion

Which particles will be transported by a stream moving at a velocity of 5 cm/s?

• pebbles, sand, silt, and clay, only

• sand, silt, and clay, only

• silt and clay, only

• clay, only

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.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Soil is made of

• Weathered rock

• decomposed plants and animals

• air and water

• all of the above

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-LS2-1