Difference between revisions of "Conservation of Energy"
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==Key Stage 3== | ==Key Stage 3== | ||
===Meaning=== | ===Meaning=== | ||
| − | [[Conservation of Energy]] is a [[Physical Law]] that states that "Energy cannot be created or destroyed it can only be transferred from one store into another". | + | [[Conservation of Energy]] is a [[Law (Physics)|Physical Law]] that states that "Energy cannot be created or destroyed it can only be transferred from one store into another". |
===About Conservation of Energy=== | ===About Conservation of Energy=== | ||
Revision as of 18:17, 8 April 2019
Contents
Key Stage 3
Meaning
Conservation of Energy is a Physical Law that states that "Energy cannot be created or destroyed it can only be transferred from one store into another".
About Conservation of Energy
- Conservation of Energy is important when calculating energy transfers.
- The total energy in a closed system must remain the same, so when one energy store loses energy other energy stores must gain that amount of energy.
Key Stage 4
Meaning
Conservation of Energy is a Physical Law that states that "Energy cannot be created or destroyed it can only be transferred from one store into another".
About Conservation of Energy
- Conservation of Energy is important when calculating energy transfers.
- The total energy in a closed isolated system must remain the same, so when one energy store loses energy other energy stores must gain that amount of energy.
- If a system is an open system energy can leave the system, but the energy is not destroyed.
- In a closed isolated system energy can be dissipated, which means it is still in the system but is wasted and cannot be recovered to perform useful work.