Science Quiz

What is the smallest unit of an element called?

• Molecule

• Atom

• Compound

• Cell

Which of the following is NOT a living thing?

• A plant

• A rock

• A dog

• A mushroom

What is the process by which plants make their own food called?

• Photosynthesis

• Respiration

• Digestion

• Circulation

What is the name of the layer of gases that surrounds the Earth?

• Atmosphere

• Hydrosphere

• Lithosphere

• Biosphere

What is the force that pulls objects towards the Earth's center?

• Gravity

• Magnetism

• Friction

• Air resistance

Which of the following is a mixture?

• Salt

• Sugar

• Air

• Water

Which of the following is a physical change?

• Burning wood

• Rusting iron

• Melting ice

• All of the above

Which of the following is a type of simple machine?

• Lever

• Wheel and axle

• Pulley

• All of the above

What do plants need to survive?

• Sunlight, water, and air

• Food, water, and shelter

• Water, air, and fire

• Sunlight, food, and water

Which of the following is a renewable resource?

• Coal

• Oil

• Wind

• Natural gas