Chapter 20 7th Grade Test

Temperature, light, air, water, and soil are all ___________ parts of the environment.

• biotic
• abiotic
• dead
• scavenged

A living or once-living thing in an ecosystem is a(n) _______.

• biotic factor
• population
• abiotic factor
• resource

Which of the following describes a biotic factor affecting other parts of an ecosystem?

• sunlight increasing the temperature, causing plants to die
• a forest fire destroying thousands of acres of trees
• a coyote hunting, killing, and eating rabbits
• chemical pollution causing the pH of a river to increase

What does the prefix "bio-" mean?

• Scientific
• Not
• Dead
• Alive

Soil is 

• Weathered Material
• Weathered material and organic matter
• Weathered material, organic matter, air and water.
• Bedrock

Soil can be considered an ecosystem because...

• it contains living things such as earthworms, ants, and bacteria

• what is an ecosystem?

• it contains nonliving things

• seriously, what is an ecosystem?!

The transformation of water vapor back into liquid water by cooling is called...

• condensation
• evaporation

If a rain drop lands in the ocean, it will eventually _______, and return to the clouds.

• condense
• evaporate

After liquid water turns into water vapor, it goes into the air where it becomes a...

• glacier
• cloud
• surface water
• ground water

Water vapor is the _______ form of water.

• solid
• liquid
• gaseous