Conservation of energy KS3

Conservation of energy KS3

Multiple Choice

_________ CANNOT be created or destroyed

• energy

• transformation

• motion

• pendulums

Multiple Choice

Is energy always conserved?

• Always
• Often
• Never
• Sometimes

Multiple Choice

What does the Law of Conservation of Energy state?

• Energy cannot be created or destroyed
• Nothing can exchange energy
• Energy will increase over time.
• Energy will decrease over time.

Multiple Choice

Energy stored in petrol in a car is transferred to energy stored in a moving car. What are the names for these two energy stores?

• chemical and kinetic
• strain and kinetic
• chemical and electrical
• electrical and kinetic

Multiple Choice

What is the name for energy stored in a hot object?

• Thermal
• Potential
• Fire
• Electrical

Multiple Choice

What energy store is associated with a tennis ball held 1 m above the floor?

• Thermal
• Gravitaional
• Elastic
• Kinetic

Multiple Choice

True or false. Energy can be created and destroyed.

• True
• False

Multiple Choice

Which type of energy stote is to do with food, fuels and batteries?

• thermal

• kinetic

• chemical

• elastic

Multiple Choice

Energy is measured in what units?

• Hertz

• Watts

• Joules

• Newtons

Multiple Choice

When you burn a fuel, what are the main energy transfers involved?

• Chemical to elastic potential

• Thermal to chemical

• Chemical to thermal

• Electrostatic to thermal

Multiple Choice

Which of these is not a store of energy?

• chemical energy store

• thermal energy store

• kinetic energy store

• electrical energy store

Multiple Choice

When you drop an object, what are the main energy transfers involved?

• Gravitational potential to thermal

• Kinetic to gravitaional potential

• Gravitational potential to chemical

• Gravitational potential to kinetic

Multiple Choice

what is the wasted energy in a hairdryer?

• light

• sound

• heat

• kinetic or movement

Multiple Choice

If 100 Joules of energy goes into a light bulb and 60 Joules is wasted as heat. How much energy is transferred as light energy?

• 40 Joules

• 160 Joules

• 400 Joules

• 40 Watts

Multiple Choice

If 500 Joules of energy is added to a car as chemical energy in the fuel and 100 Joules is wasted as sound. How much is transferred as useful kinetic energy?

• 600 Joules

• 200 Joules

• 400 Joules