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A skateboard moves back from a stationary position when a man jumps off because of
Conservation of momentum - boy jumps forward with a positive forward force, board flies back with an opposite equal force in negative direction.
1 of 5
Half life is...
The time taken for the original number of radioactive isotopes to halve in number
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3 theories of what will happen to the universe...
Continue to expand - everything will get darker and colder, Big Crunch - stop expanding and begin to contract, Reach an equilibrium position and stop.
3 of 5
Describe the refraction process in a glass block...
Light travels from dense to a more dense medium, so light speeds up and bends towards the normal. Then, it passes from dense to less dense medium such as glass to air, the light speeds up and it bends away from the normal.
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Describe how transverse waves work
Vibrations are perpendicular to the direction of travel.
5 of 5

Other cards in this set

Card 2

Front

Half life is...

Back

The time taken for the original number of radioactive isotopes to halve in number

Card 3

Front

3 theories of what will happen to the universe...

Back

Preview of the front of card 3

Card 4

Front

Describe the refraction process in a glass block...

Back

Preview of the front of card 4

Card 5

Front

Describe how transverse waves work

Back

Preview of the front of card 5

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