This test is run by .
Note that your final mark will not be saved in the system.
Note that your final mark will not be saved in the system.
Conservation of energy and energy resources GapFill
Running Total
0
0%
Attempt
1 of 3
You must fill all the gaps before clicking ‘Check Answers!’
In any process, energy is conserved, meaning that energy
. However, energy can be transferred between stores; if energy is transferred irreversibly in a way we don't consider useful (often to thermal energy lost to the environment), we say that this energy has
.
is a measure of how much energy has been transferred in a way we consider useful, and can be calculated by useful energy transferred ÷ total energy transferred.
If less energy has been transferred usefully than we'd like, there are a few ways we can reduce the wasted energy. If a moving part is dissipating energy because of friction, will cause more energy to be transferred usefully. If a heated building is losing a lot of thermal energy to its surroundings, the walls can be .
The modern world depends on energy resources for a variety of applications, including electricity generation, transport and heating. Energy resources are categorised as either , based on whether or not there is a finite amount of a resource or whether more of the resource is produced continuously.
Some energy resources, such as , give off a lot of by-products, and can contribute to pollution and climate change. Others don't have these same by-products, but might have other drawbacks, such as .
If less energy has been transferred usefully than we'd like, there are a few ways we can reduce the wasted energy. If a moving part is dissipating energy because of friction, will cause more energy to be transferred usefully. If a heated building is losing a lot of thermal energy to its surroundings, the walls can be .
The modern world depends on energy resources for a variety of applications, including electricity generation, transport and heating. Energy resources are categorised as either , based on whether or not there is a finite amount of a resource or whether more of the resource is produced continuously.
Some energy resources, such as , give off a lot of by-products, and can contribute to pollution and climate change. Others don't have these same by-products, but might have other drawbacks, such as .