The three states of matter are...
Gases, liquids and solids
What do not have a definite shape or volume?
Gases
What have a definite volume but not a definite shape?
Liquids
What have a definite shape and volume?
Solids
How can we easily transform kinetic energy into thermal energy?
By rubbing our hands together
The sun produces lots of...
Thermal energy
If the thermal energy in a liquid increases it becomes a gas. This process is called...
Evaporation
If the thermal energy in a solid increases, it becomes a liquid. This process is called...
Melting
If the thermal energy in a liquid decreases, it becomes a solid. This process is called...
Freezing
Electricity can pass through some materials very easily. These materials are called...
Electrical conductors
Some materials do not allow electricity to pass through them. These materials are called...
Electrical insulators
2 examples of electrical conductors are...
water and metal
2 examples of electrical insulators are...
Wood and plastic
What type of energy allows you to see objects and their shapes?
Light energy
What type of energy is produced by everything that is in motion?
Kinetic energy
What type of energy is produced by things that make a noise?
Sound energy
