What is evaporation?
It is when a liquid turns into a gas.
Explain the process of evaporation.
It happens because some particles in the liquid gain heat energy making them move faster and further apart until they escape from the surface of the liquid.
Name two factors that speed up evaporation.
wind and heat.
Name two ways that evaporation is useful.
Drying our hair, drying our clothes, making some kinds of food.
Evaporation happens all the time.
No, it doesnt.
Yes,heat makes it faster, but it happens at all temperatures
Liquid has no shape. It formsto take the shape of the container it fills.
true
false
Solid has no shape.
true
false
Gas the matter that keeps its shape
true
false
What is condensation?
It is when a gas changes to a liquid.
Explain the process of condensation.
When gas particles cool down and lose energy they change into a liquid.
Where in the water cycle does evaporation happen?
Rivers, lakes, seas, and plants.
What are formed when water vapour condenses?
Clouds.
How does evaporated water get back to Earth?
It falls as rain or snow.
Melting is a change when water becomes ice
false
true
What is the boiling point of pure water?
100 degrees Celcius.
What do we call the temperature at which a liquid boils?
The boiling point.
