physics- P1 conservation and dissipation of energy : changes in energy stores p1.1

examples of energy stores are chemical,kinetic,gravitational potential , thermal and elastic

list every name of the energy stores simply

1. Kinetic energy

2. ,Magnetic energy

3. elastic

4. Electricotastic

5. Thermal energy

6. chemical

7. ,Gravitational energy,

8. light energy),

9. Sound energy

10. nucluear

conservation of energy

energy can be transferred from 1 to another or stored but never created or destroyed

what are 5 ways energy can be transferred between stores?

mechanically(lifting a book on a shelf),electrically,heating,light or sound

closed system

the total energy doesnt change theres none transferred to the surroundings

example of a closed system

An example of a closed system in science is a sealed glass jar containing air. The jar prevents the exchange of matter with the surroundings, as no air molecules can enter or escape. However, energy can still be transferred into or out of the jar, such as through heating or cooling.

describe a roller coaster (6marks)

1. when the roller coaster climbs the gpe increases
   

2. as the roller coaster gets to the top its at max gpe,kinetic energy is at its minimum
   

3. when the rollercoaster goes down it transfers to kinetic energy as it speeds up.

4. as the rollercoaster falls, the gpe decreases as its transferred to kinetic energy which increases

5. while it moves down , the wheels touch to create friction and transferred to thermal energy (wasted energy)

6. thermal energy is ( a wasted energy) transferred to sound energy as the wheels make sound when friction occurs

chemicl energy

energy stored in food,fuels or chemical found in batteries. eg. fuel/food

kinetic energy

energy stored in the movement of the energy. eg.moving car

gpe

energy stored in a object when its been raised above the ground

thermal energy

energy stored in a object because of its temp

elastic energy

energy stored in a object when squashed or streched