WeyPhys KS3 Energy 1

Front

Main changes in energy stores when a diesel engined car accelerates on a level road?

Back

Chemical to Kinetic

Front

When a rollercoaster reaches the top of its climb and falls back down, the energy stores change from...

Back

Gravitational to Kinetic

Front

When a bungee jumper falls, what are the main changes in energy stores?

Back

Gravitational to Kinetic to Elastic

Front

Whenever energy changes from one energy store to another, some energy gets "wasted" as...

Back

Thermal

Front

A kettle moves 2000 J of thermal energy into the water's thermal energy store for every 2500 J of electrical energy that flows into it. What is the kettle's efficiency?

Back

0.8

Front

A petrol lawnmower has an efficiency of 0.25. If its chemical energy store decreases by 200 kJ, how much energy moves to the kinetic energy store?

Back

50,000 J

Front

What can never happen to energy?

Back

It cannot be created or destroyed

Front

What is one kilojoule, kJ?

Back

10³ Joules

Front

Non-renewable energy resource

Back

It will not be replaced.

Front

Which of these is a list of non-renewable resources? Options: Coal, Oil, Gas, Solar, Nuclear, Geothermal, Oil, Coal, Coal, Oil, Nuclear, Gas, Hydroelectric, Tidal, Wave, Wind

Back

Coal, Oil, Nuclear, Gas