Science Revision Quiz

What is the main job of the lungs?

• Pump blood

• Digest food

• Take in oxygen and remove carbon dioxide

• Send messages to the brain

What does the heart do in the circulatory system?

• Breaks down food

• Sends messages to the brain

• Pumps blood around the body

• Helps with breathing

How do the respiratory and circulatory systems work together?

• The lungs clean the blood and the heart sends it to the stomach

• The heart sends oxygen-rich blood from the lungs to the body

• The stomach sends food to the heart

• The lungs help the brain send signals

What do you need to make a simple electric circuit?

• Battery, wire, bulb

• Magnet, Motor, wire

• Wire, spoon, box

• Plastic, metal, glass

Which material is a good conductor of electricity?

• Plastic

• Wood

• Copper

• Rubber

During a science experiment, Krish is trying to determine which materials can prevent electricity from passing through them. He has four materials to test: Aluminum, Iron, Glass, and Silver. Which of these materials is an insulator?

• Aluminum

• Iron

• Glass

• Silver

In a series circuit, what happens if one bulb goes out?

• Only that bulb goes out

• The battery stops working

• All bulbs go out

• The wires melt

Vanya is setting up a new lighting system for her home. She wants to ensure that if one light bulb goes out, the others will still work. Which circuit should she use to allow electricity to flow through multiple paths?

• Closed circuit

• Series circuit

• Broken circuit

• Parallel circuit

What is a physical property of a substance?

• Its price

• Its ability to melt

• Its name

• Its owner

What is it called when a solid changes into a liquid?

• Boiling

• Freezing

• Melting

• Evaporating