ELPAC Speaking Practice Challenge

What is the initial setup in step one?

• Two glass containers connected by a plastic tube, both empty, on a hot plate.

• Two metal containers connected by a glass tube, one with liquid and one empty, on a hot plate.

• Two glass containers connected by a glass tube, one with liquid and one empty, on a hot plate.

• Two metal containers connected by a plastic tube, both with liquid, on a hot plate.

What happens to the liquid in the first container when the hot plate is turned on?

• It freezes.

• It turns into ice.

• It evaporates and turns into gas.

• It remains the same.

What is the process called when a liquid changes into a gas?

• Melting

• Evaporation

• Freezing

• Condensation

Where does the gas move after evaporation?

• It condenses immediately.

• It stays in the first container.

• It moves to the second container.

• It escapes into the air.

What happens to the gas when the hot plate is turned off?

• It cools down and condenses into liquid.

• It heats up further.

• It evaporates again.

• It remains as gas.

What is the process called when gas changes back into a liquid?

• Condensation

• Freezing

• Evaporation

• Sublimation

What is the final state of the liquid in both containers after the demonstration?

• One container has more liquid than the other.

• One container has gas and the other has liquid.

• Both containers are empty.

• Both containers have an equal amount of liquid.

What does this demonstration illustrate about the water cycle?

• It shows how water can freeze.

• It demonstrates how water can evaporate and condense, moving from place to place.

• It shows how water can be filtered.

• It explains how water can boil.