Difference between revisions of "Gravity"
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==Key Stage 3== | ==Key Stage 3== | ||
===Meaning=== | ===Meaning=== | ||
− | + | Gravity is a [[force]] that causes all [[Object|objects]] with [[mass]] to be [[Attract|attracted]] to each other. | |
+ | |||
+ | ===About Gravity=== | ||
+ | : All [[object]]s are affected by [[gravity]]. | ||
+ | : [[Gravity]] is the [[force]] that pulls objects to the ground. | ||
+ | : [[Isaac Newton]] was the first to realise that [[gravity]] is the [[force]] that holds the [[planet]]s in [[orbit]] around the [[Sun]]. | ||
===Falling=== | ===Falling=== |
Revision as of 12:08, 15 October 2018
Contents
Key Stage 2
Meaning
Gravity is a force that causes all objects to be attracted to each other.
About Gravity
- Gravity is a non-contact force.
- Gravity affects all objects.
- Gravity pulls us down towards the centre of the Earth.
If person A drops the cog it will fall towards the centre of the Earth. If person B drops the spanner it will fall towards the centre of the Earth. |
The planets are pulled towards the sun by gravity. |
Key Stage 3
Meaning
Gravity is a force that causes all objects with mass to be attracted to each other.
About Gravity
- All objects are affected by gravity.
- Gravity is the force that pulls objects to the ground.
- Isaac Newton was the first to realise that gravity is the force that holds the planets in orbit around the Sun.
Falling
Energy Transfers
Accelerating
- When an object accelerates towards the ground energy is transferred from the gravitational potential energy store of the object to the kinetic energy store of the object.
Decelerating
- When an object decelerates away from the ground energy is transferred from the kinetic energy store of the object to the gravitational potential energy store of the object.
Forces
Accelerating
- When an object accelerates towards the ground gravity is causing a mechanical energy transfer.
Decelerating
- When an object decelerates away from the ground gravity is causing a mechanical energy transfer.