Unit 6

Question 1

What are the energy stores and their definitions ???

Answer 1

1- Kinetic energy
The energy store of a moving object
formula:-
1/2mv*2
2-Gravitational potential energy (g.p.e)
The energy store of an object raised up against the force of gravity
formula:-
mgh
height from the chosen surface
3- Chemical energy
The energy store in bonds between atoms (can be released when a chemical reactions takes place)
H —— Cl
4-Nuclear energy
Energy stores in the nuclease of an atom
proton —– neutron
5- Elastic (strain) energy
Energy store in the changed shape of an object
6- Internal energy
7-Electromagnetic energy
Energy that is transferred using electromagnetic waves

Question 2

What are the energy transfers ???

Answer 2

1- Electrical energy
2- Thermal energy
3- Radiation energy ( such as light )
4- Mechanical energy