Science for Kids: Understanding Convection

What is the process called that involves the transfer of heat through the movement of fluids?

• Conduction

• Radiation

• Evaporation

• Convection

In the tea bag rocket experiment, what causes the tea bag to rise?

• The shape of the tea bag

• The weight of the tea bag

• The color of the tea bag

• The heat from the fire

What is needed to make an electric heater work?

• Wind

• Sunlight

• Electricity

• Water

What happens to a wire when electricity passes through it?

• It becomes cold

• It changes color

• It becomes hot

• It shrinks

What is the role of wires in a convection heater?

• To provide light

• To create sound

• To conduct electricity and generate heat

• To cool the air

What is used to demonstrate convection currents in the beaker experiment?

• Potassium permanganate

• Sand

• Salt

• Sugar

What natural phenomenon is caused by convection currents?

• Rain

• Wind

• Earthquakes

• Tides

Where can convection currents be found beneath the Earth's surface?

• In the atmosphere

• In the asthenosphere

• In the ocean

• In the mountains

What is the effect of the sun heating the ground in terms of air movement?

• The hot air rises

• The air cools down

• The air stays still

• The air becomes denser

What is a potential danger when using electricity and heat?

• It can make things invisible

• It can start a fire

• It can cause water to freeze

• It can create a vacuum