Year 8 Energy & SIS Revision

State the Law of Conservation of Energy

Energy is...

• The ability to do work (make things happen)

• Something that we all have

• Possessed by all living things

• Not always efficient

Select the answer with all 9 forms of energy that you have learnt about this term.

• Kinetic, elastic potential, chemical, gravitational kinetic, nuclear, sound, heat, light and electrical.

• Kinetic, elastic kinetic, chemical, gravitational potential, sparking, sound, heat, light and electrical.

• Kinetic (mechanical), gravitational potential, elastic potential, chemical, nuclear, sound, heat, electromagnetic (light) and electrical.

• Moving, gravitational potential, elastic kinetic, chemical, nuclear, sound, heat, electromagnetic (light) and electrical.

Energy is measured in...

• Efficiency

• millimetres, centimetres, and metres

• Joules, kiloJoules, and MegaJoules

• percentages

Convert 540 J to kJ

• 0.054 kJ

• 54 kJ

• 5.4 kJ

• 0.54 kJ

Convert 6000 kJ to MJ

• 600 MJ

• 60 MJ

• 6 MJ

• 0.6 MJ

_________ energy is the stored energy that an object may have based on its size, shape, position, or material that it is made from.

_______, or mechanical energy is the energy that an object has because of its motion.

Which of the following are all types of potential energy?

• Chemical, electromagnetic, elastic potential, gravitational potential.

• Chemical, nuclear, elastic potential, and gravitational potential.

• Nuclear, elastic potential, gravitational potential, and sound.

• Sound, electromagnetic (light), thermal, electric.

Select all the forms of energy that are kinetic.

• Electromagnetic (light) energy.

• Thermal (heat) energy.

• Sound energy.

• Electrical energy.