8th Grade Science Review Quiz

What is the primary source of energy for most ecosystems?

• The Moon

• The Sun

• The Ocean

• The Wind

Which of the following is a chemical reaction?

• Melting ice

• Burning wood

• Boiling water

• Breaking glass

What is the outermost layer of the Earth called?

• Mantle

• Core

• Crust

• Lithosphere

Which of the following is an example of a force?

• Speed

• Gravity

• Temperature

• Volume

Which system in the human body is responsible for transporting blood?

• Digestive system

• Respiratory system

• Circulatory system

• Nervous system

What is the term for the average weather conditions in an area over a long period?

• Weather

• Climate

• Atmosphere

• Season

Which biome is characterized by very low temperatures and permafrost?

• Desert

• Tundra

• Rainforest

• Grassland

What is the chemical formula for water?

• NaCl

Which layer of the Earth is liquid?

• Inner core

• Outer core

• Mantle

• Crust

What is the unit of force in the International System of Units (SI)?

• Joule

• Newton

• Watt

• Pascal