Physical Changes: Evaporation and Condensation

The video explains the processes of evaporation and condensation, key components of the water cycle. It describes how water changes from liquid to gas and back to liquid, forming clouds. Evaporation occurs when water turns into vapor, while condensation happens when vapor cools and becomes liquid. These processes are examples of physical changes in matter.

What happens to water in a glass left out over several days?

• It turns into ice.

• It evaporates into the air.

• It becomes a solid.

• It remains unchanged.

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

• Evaporation

• Condensation

• Freezing

• Sublimation

Why does the outside of a cold soda can become wet on a humid day?

• The can absorbs moisture from the air.

• Water vapor in the air condenses on the can.

• The soda leaks through the can.

• The can releases water.

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

• Sublimation

• Melting

• Condensation

• Evaporation

How do clouds form in the atmosphere?

• By wind blowing water upwards.

• By the sun heating the air.

• By ice melting in the sky.

• By water vapor rising and cooling into droplets.