LESSON 10: KINETIC AND POTENTIAL ENERGY Flashcards
potential energy
Potential energy is energy that is stored in an object. It isn’t being used at the moment. An example to think about it a large rock on top of a hill. Just sitting still, the rock is not doing anything at all. But because it is sitting at the top of a hill, it has the potential to roll down and so some damage on the way. The energy is stored in the rock because it has mass and because it has height. A rubber band is another good example. When you stretch a rubber band, you give it potential to return to its original unstretched state upon release. In the stretched state, it has potential energy
what is potential energy
Potential energy is the energy STORED within an object due to its position, arrangement or state. It is energy that has the ‘potential’ to do something When the position or arrangement or state of the object changes, the energy will be released.
kinetic energy
Kinetic energy is energy of motion. A rubber band flying through the air has kinetic energy. A rock falling from a hill has kinetic energy. * When you are running, your body has kinetic energy. An object that is moving has kinetic energy. A yo-yo , when released, has kinetic energy.
what is energy
Energy is what something has when it is moving or when it has the potential to move. Something has energy when it is doing stuff or has the potential to do stuff
gravitational potential energy
When you are high up (like at the top of a swing, or jumping), you have gravitational potential energy as gravity has the potential to pull you back down. * Then when you lose height (by being pulled down by gravity), the energy turns into kinetic energy as you are moving. You can also lose energy, as it turns into sound and heat energy . You could lose the energy when moving through the air, as the friction caused from atoms moving through the air, transforms some energy into sound (sound of you moving through the air) and heat (caused by the friction). Through energy transformations, objects and people are able to move
energy transformations
You cannot create energy out of thin air, and you cannot destroy energy. The energy is just constantly changing and transforming (energy transformations)
electrical potential energy
An example of potential energy is electrical potential energy. The energy created by wind turbines is transformed into electrical energy. This energy has the potential to give electricity to other things, causing them to move.
chemical potential energy
- Another example of potential energy is chemical potential energy, most notably from our food. When we ingest food, it has the chemical potential to allow our muscles to move and to keep us warm. If this energy is utilised, then it is no longer potential energy.
electrical energy
Electrical energy is used to power some vehicles and involves electrons moving
radient energy
Radiant energy involves the movement of electro-magnetic energy.
solar radiation
Solar radiation energy involves the transformation of Co2 to feed the plants
infrared radiation
Infrared radiation, this involves UV rays that burn our skin. This is from the sun
sound
Sound is the vibration of atoms. The string on a guitar vibrates, causing the atoms to clash and vibrate causing sound. The moving wheels of a car travel over rocky ground, which allows us to hear.
potential energy
Potential energy is the energy that an object possesses. It is stored energy that has the energy to do work
eleastic energy
Elastic energy is the energy stored in elastic materials, for example a spring. When we stretch the string, the sorted elastic energy well restore the spring to its original shape
