Engineering Clean Water Video

Water keeps getting recycled and does not change.

• True

• False

What happens to water during evaporation?

• It turns into ice.

• It becomes invisible water vapor.

• It disappears completely.

• It changes into solid molecules.

Are you enjoying the video lesson?

• Yes

• No

Why do water droplets form clouds during condensation?

• Because gravity pulls them down.

• Because the air becomes warmer.

• Because water vapor molecules group together in cold air.

• Because the sun heats them up.

What causes water droplets to fall from clouds as rain or snow?

• The droplets evaporate again.

• The droplets become too heavy for the cloud to hold.

• The sun pushes them down.

• The air becomes warmer.

What is the first step engineers take to solve water pollution problems?

• They start building random solutions.

• They create a careful plan or blueprint.

• They test water samples.

• They clean rivers manually.

Why is it important for engineers to understand Earth's interconnected systems?

• To understand how water, air, and living things affect each other.

• To create new water molecules.

• To build bigger machines.

• To make clouds heavier.