Units
Volume and Density
Energy
Molecules
Radioactivity
100
Kilograms
What is the standard unit of mass?
100
Mass/Volume
What is density?
100
Solar cells
.... are used to convert sunlight into electricity.
100
The forces between particles are so strong, it has definite shape and definite size.
Describe the Solid state of matter.
100
The split of the nucleus of an atom into smaller parts where a large amount of energy is released.
What is Nuclear fission?
200
1 hundredth of a meter
What is the centimeter?
200
Width x Length x Height
What is the volume of a rectangular prism?
200
From chemical energy to kinetic energy, heat energy and sound energy.
What is the energy transformation in a car engine?
200
the net movement of molecules or atoms from a region of high concentration to a region of low concentration.
What is diffusion?
200
Nuclear fuel
What is Uranium?
300
mg, g, Kg
Order the following units ascending: Kg, mg, g.
300
Litre
A unit of volume for liquids is ...
300
Energy can't be created or destroyed, but it can only change from one for to another.
State the law of conservation of energy
300
Smoke particles twist and move in a random movement.
Give an example on Brownian Motion
300
Boron or Cadmium
What are movable control rods made of?
400
Length -> Ruler. Mass -> Balance. Time -> Stopwatch
What is the apparatus used to measure the length, mass and time?
400
1 g/cm3
What is the density of water?
400
A very useful and clean source of energy utilizing falling water.
What is hydro-electric energy?
400
Condensation
The name of the change from gas to liquid is named ....
400
The nuclear waste might leak out; it can pollute the world for our grandchildren!
Give one disadvantage of nuclear energy.
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