WorksheetsReading check - CIE page 85-96
Total questions: 9
Worksheet time: 5mins
What was the topic that you read about?
Forces
Motion
Energy transformations
If you lift an object up from the ground and hold it there, how is the energy stored?
Elastic potential
Gravitational potential energy (GPE)
Kinetic energy (KE)
Chemical energy
What is the unit for energy?
Volts
Power
Amps
Joules
How is the majority of energy 'wasted' in a light?
Heat
Light
Sound
Non is wasted, they are 100% efficient.
What is the efficiency of this light bulb?
20%
25%
30%
15%
An apple falls from a tree what happens to it GPE?
Remains constant
Increases
Decreases
What happens to an aircraft GPE if it flies horizontally at a constant height of 9000m?
Increase
Decrease
Remain constant
What happens to the GPE of a rocket that is fired into the sky?
Increases
Decreases
Remains Constant
A runner has a mass of 80kg and is running at a velocity of 7m/s. What is her Kinetic energy? (Give answer to 3 Significant figures)
2000J
1960J
1970J
1980J
