DC3 Revision Physics

Question 1

What is Renewable Energy? Provide 3 examples.

Answer 1

Energy that is taken from a source that doesn’t run out. 3 Examples are Geothermal Energy, Wind and Solar Power.

Question 2

What is Non-Renewable Energy? Provide 3 Examples.

Answer 2

Non-Renewable Energy is energy that cannot be reused or replenished. 3 examples are fossil fuels, Oil, Coal and Gas.

Question 3

What is a resistor? Ammeter? Voltmeter? Diode? Open switch? Closed switch? And fuse

Answer 3

A resistor controls the amount of current flowing in a circuit, an ammeter is a device used to measure the current, a voltmeter measures voltage difference between two points in a circuit. A diode is used to allow the current to flow in one direction only, an open switch is a switch not making electrical contact so the current can’t flow through it, a closed switch on the other hand is the opposite and allows the current to flow, a fuse is a safety device designed to protect electrical circuits from over current.

Question 4

What is Kinetic Energy?

Answer 4

Kinetic Energy is a store of energy that is mobility and movement.

Question 5

Gravitational and Electrical Energy?

Answer 5

Gravitational is the gravity and it increases as something ascends, it decreases as it descends, electrical energy is the electricity in items and electricity based objects.

Question 6

Thermal and Chemical?

Answer 6

Chemical is in batteries and in things that require chemical energy, Thermal is heat and things that require heat.

Question 7

1KG in G

Answer 7

1000 G

Question 8

Dissipation of Energy?

Answer 8

The spreading out of energy.