Science Quiz

Which gas makes up most of Earth's atmosphere?

• Oxygen

• Nitrogen

• Carbon dioxide

• Helium

What part of a plant carries water from roots to leaves?

• Stem

• Petals

• Leaves

• Roots

Which of these objects reflects light?

• Mirror

• Brick

• Coal

• Sponge

What do we call the process when a solid turns into a liquid?

• Freezing

• Melting

• Evaporation

• Condensation

Which animal group includes frogs?

• Mammals

• Reptiles

• Amphibians

• Birds

What tool measures how much rain falls?

• Thermometer

• Barometer

• Rain gauge

• Anemometer

Which of these is a source of heat?

• Ice

• Fire

• Wind

• Sand

What do plants release into the air during photosynthesis?

• Carbon dioxide

• Oxygen

• Nitrogen

• Water vapor

Which of these materials floats on water?

• Iron

• Glass

• Wood

• Copper

What causes tides in the ocean?

• Wind

• Sun

• Moon

• Earth's rotation