Energy Changes

Energy is measured in.....

• kilograms

• metres per second

• Joules

• metres

Which energy store is missing? Magnetic, electrostatic, nuclear, gravitational, elastic, thermal, chemical and....

• heating

• lighting

• kinetic

• sounding

Energy cannot be created or destroyed, it can only be _________ between the stores

• removed

• dissipated

• transferred

• stored

On a rollercoaster, the gravitational potential is at its highest/lowest when it reaches the top of the track

• highest

• lowest

On a rollercoaster, gravitational energy is transferred to which other two energy stores?

• thermal and electrostatic

• kinetic and chemical

• kinetic and nuclear

• thermal and kinetic

Work done is another way of saying energy is transferred. What are the units of measurement fir work done?

• kilograms

• Joules

• Degrees celcius

• Joules per kilogram degrees celcius

What is the equation to work out kinetic energy?

• mass x velocity

• 0.5 x mass x velocity

• 0.5 x mass x velocity³

• 0.5 x mass x velocity²

The mass of a car is 2500kg. It travels at 20m/s. Calculate the kinetic energy.

• 500,000J

• 600,000J

• 400,000J

• 700,000J

What is the equation to work out gravitational potential energy?

• mass x gravitational field strength x height

• 0.5 x mass x velocity²

• mass x height

• height x gravitational field strength

A book has a mass of 2.7kg. It is on a shelf that is 2.4m above the ground. The gravitational field strength is 10N/kg. Calculate the gravitational potential energy:

• 64.7

• 64.8

• 64.9

• 65.0