Heat Sources
The main source of heat for the earth.
The sun
What are the 3 main states of matter?
Solid, liquid, gas
What is it called when heat moves from one object to another?
Heat transfer.
What is it called when a liquid turns to a gas?
Evaporation
What is thermal Energy?
Energy that comes from heat.
Name a type of heat source we could use in our homes
What is a furnace or heater.
In which state of matter do particles move the least?
solid
What are the 3 ways heat transfers?
Conduction, convection and radiation.
When water freezes, what does it become?
Ice
How do we measure temperature?
a thermometer
What is a heat source?
Something that makes its own heat.
What happens to ice when it melts?
It changes from a solid to a liquid.
What type of heat transfer occurs when a metal spoon feels hot when placed in soup?
conduction
How does condensation happen?
When a gas loses heat and becomes a liquid.
What happens to thermal energy when you heat a pot of water?
It increases.
Electricity, burning and _________ are examples of heat sources.
What is friction.
What state of matter takes the shape of its container?
Liquid
What is convection?
Transfer of heat through a liquid or gas.
What change occurs when ice is heated?
melting (it becomes water)
What happens to thermal energy when ice is placed in a warm drink?
It decreases.
What are 3 examples of things that are NOT heat sources?
Answers will vary
What happens to the particles in a gas when it's heated?
They move faster and spread out.
How does the sun warm the earth?
Radiation
What happens to water when it boils?
It changes from a liquid to a gas.
Why does a metal object feel colder than a wooden spoon at the same temperature?
Metals conducts heat away from your skin faster than wood.