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