Weathering and Soil Test Review

1. Tracey wants to find the BEST soil in which to plant her garden. Which soil color should he choose?

• red

• yellow

• gray

• black

When rock breaks down into smaller pieces, this process is called

• erosion

• deposition

• decomposition

• weathering

Cracks and potholes in roads are mainly caused by

• oxidation

• acid rain

• ice wedging

• animals

Which process occurs when wind-blown particles grind away the surfaces of rocks like sand paper?

• ice wedging

• animal actions

• acid rain

• abrasion

The three types of coil are clay, sand, and silt. Which of the choices below ranks these from smallest to largest particle size.

• sand, clay, silt

• clay, silt, sand

• clay, sand, silt

• silt, clay, sand

Texture refers to the way something feels when you touch it. Which of the following is MOST responsible for giving soil its texture?

• roots

• water

• worms

• rock particles

The bedrock is mostly made of

• weathered rock

• soil

• solid rock

• dead plants

From top to bottom, what are the horizons of soil?

• weathered rock, subsoil, topsoil

• subsoil, weathered rock, topsoil

• topsoil, subsoil, weathered rock

• none of the above

The organisms that break down dead and decaying plants and animals are

• decomposers

• humus

• loam

• bedrock

Ice wedging is caused by

• acid freezing on rocks

• water freezing and thawing

• water and oxygen causing rust

• water being boiled and cooled