Soil
Multiple-Choice Exercise
Content © 2004 Tami Maloney; Author of Activity: Tami Maloney; All rights reserved. No commercial, for-profit use of this material is allowed. E-mail comments and questions to Tami Maloney.
Choose the correct answer for each question.
Which of these is a natural part of soil?
- paper
- plastic
- silt
- tires
In which layer of soil is humus located?
- subsoil
- bedrock
- topsoil
- silt
Soil is important for plant growth because it _____.
- makes the Earth's surface hard
- moves easily from one place to another
- does not let plant roots grow too deeply
- contains nutrients to help plants grow
Which item is NOT a component of soil?
- silt
- humus
- paper
- clay
Soil helps trees because soil _____.
- makes food for the trees
- gives nutrients to the trees
- turns the roots into new trees
- moves seeds to new places
In which Earth layer do most grasses grow?
- Solid rock
- Topsoil
- bedrock
- subsoil
Decayed matter that becomes part of the soil is _____.
- sand
- sediments
- humus
- subsoil
Large rocks can be slowly broken into small pieces by all of the following except _____.
- sandy soil
- plant roots
- water
- weather
Which of these is a good way to slow down erosion on a hill?
- Plant grass on the hill
- Cut down the tallest trees on the hill
- Build a fence on the top of the hill
- Dig a hole on the hill
What word is used for resources that can be replaced?
- Non-renewable
- Natural
- Organic
- Renewable