Answer:
Energy can be transferred (move from one location to another) and it can change (transform) from one type to another – but the total amount of energy is always conserved, i.e. it stays the same.
Explanation:
1)Electrical energy is moved from the wall socket through the cable, and stored in the phone battery until used.
2)The Sun transforms nuclear energy into heat and light energy
3) Our bodies convert chemical energy in our food into mechanical energy for us to move
4)An electric fan transforms electrical energy into kinetic energy
5) Lightning converts electrical energy into light, heat and sound energy
6)mechanical work done by gravity increasing the child speed turns into kinetic energy of the child
7) mechanical work done against friction turns into internal energy of the slide and child
8)heating - due to temperature difference caused electrically or by chemical reaction
9)electrical work - charges moving due to a potential difference
10)radiation - energy tranferred as a wave, eg light and infrared - light radiation and infrared radiation are emitted from the sun
11)for a tumble dryer, the electrical work is transferred into useful internal (thermal) energy which helps to dry clothes - energy is dissipated by sound waves
12)When a skydiver jumps out of a plane, he begins to lose gravitational potential energy as his height decreases and he gains kinetic energy as his speed increases.
13)The light that comes from a smartphone is emitted as light radiation, and the sound waves are produced by a speaker that vibrates back and forth.
14)Fridge magnets, compasses, maglev trains which use magnetic levitation.
15)Human bodies, hot coffees, stoves or hobs. Ice particles vibrate slower, but still have energy.
