Grade 8 Science Quiz Chapter 18 Lesson 2,3

Production of food from chemicals is called photosynthesis.

Carnivores eat herbivores, omnivores, and other carnivores.

Air is composed mostly of carbon dioxide.

Renewable resources are replenished as quickly as they are used.

Nitrogen, as it is found in the air, can be used by plants and animals.

What part does cellular respiration play in the oxygen and carbon dioxide cycle?

• It releases oxygen into the atmosphere.

• It releases carbon dioxide into the atmosphere.

• It removes carbon dioxide from the atmosphere.

• It creates oxygen.

Which of the following is a renewable resource?

• oil

• lumber

• coal

• diamonds

Which of the following resources is considered to be a renewable resource?

• oxygen

• coal

• oil

• gas

Which statement summarizes the law of conservation of matter?

• Matter cannot change form or be destroyed, but it can be created.

• Matter cannot change form or be created, but it can be destroyed.

• Matter cannot be created or destroyed, but it can change form.

• Matter can be created, destroyed or change form.

Nitrogen makes up about _____ of Earth’s atmosphere.

• 65%

• 7.8%

• 87%

• 78%