AQA GCSE Physics 4.1 Energy overview quiz quiz

Heating

Electrically

By radiation

Chemical

Energy cannot be created or destroyed, only transferred or dissipated

Energy is always completely lost as heat in any kind of energy change

Energy can be created from nothing whenever it is needed but never destroyed

Energy is permanently destroyed at the moment that it is wasted as heat

$8\,J$

$16\,J$

$32\,J$

$64\,J$

$E_p = \frac{1}{2}mv^2$

$E_p = \frac{1}{2}ke^2$

$E_p = mgh$

$E_p = mc\Delta\theta$

The energy needed to melt $1\,kg$ of the substance at its melting point temperature

The total amount of thermal energy stored inside the substance at any moment

The energy needed to boil the substance and turn it fully into a gas state

The energy needed to raise the temperature of $1\,kg$ of it by $1\,^{\circ}C$

$42000\,J$

$4200\,J$

$21000\,J$

$84000\,J$

The total energy transferred

The rate of energy transfer

The useful fraction of energy

The force applied to an object

$0.2$

$1.25$

$0.8$

$80\,J$

Insulation

Streamlining

Heating

Lubrication

Nuclear fuel

Wind power

Tidal streams

Geothermal energy

They release large amounts of carbon dioxide into the atmosphere

Their output depends on the weather or time of day

They will soon run out completely like the fossil fuels do

They are always far more expensive to build and set up than other types

$5000\,J$

$9800\,J$

$49000\,J$

$98000\,J$