What are the three states of matter?
Solid, liquid, and gas.
What does it mean to freeze something?
Change from liquid to solid.
When does a liquid freeze?
At zero degrees Celsius.
What does it mean to melt something?
Change from solid to liquid.
What is evaporation?
Change from liquid to gas.
What do you call water as a gas?
Water vapor.
Why is there condensation on this window?
Water vapor in the air touched the cold window and turned into water droplets.
What will make water evaporate faster?
More heat.
What happens to snow and ice in the spring? Why?
It melts from heat.
What happens to lakes and ponds in winter? Why?
They freeze from cold.
