Environment
Making the environment dirty with waste products.
What is pollution?
The control center
Brain
It is made up of two or more different substances mixed together.
A mixture
True or false
Moving objects have energy.
True
Materials that do not conduct electricity.
Insulators
When something is not thrown away, but processed into something that can be used again.
Recycling
Carbon Dioxide
Substances do not mix with the liquid and form a suspension.
A force that slows or stops things sliding past each other.
Friction
Pure water is a conductor.
True or false?
False
The gradual increase in temperatures throughout the world.
Global warming
Food is broken down into small particles by this process.
Digestion
True or False
A solution is a pure substance
False
A force caused by air pushing against moving objects.
Air resistance
Circuit A
4 bulbs, 1 cell, wires, 1 switch
Circuit B
2 bulbs, 2 cells, 1 wire, 1 switch
This circuit diagram shows stronger light.
Circuit B
Cutting and burning trees are examples of this.
Deforestation
Part of the brain that controls your speech and lets you talk.
Cerebrum
True or False
Small grains dissolve faster than big grains.
True
Shows that direction and size of forces
Force diagram
The unit electric current is measured in.
Amperes
To protect from loss or harm; preserve
Conserve
A machine that acts like a kidney.
Dialysis machine
If salt and water is a solution, what is flour and water?
Suspension
The amount of matter in an object
Mass
They represent the components of an electric circuit.
Circuit symbols