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Flashcards in Physics Deck (13):
1

What is Electricity generation?

The process of generating power from other sources primary energy.

2

How do you calculate efficiency?

(useful energy out / total energy in) x (100%)

3

What is the national grid?

A system of cables, transformers and power stations.

4

What is condensation?

Water which collects as droplets on a cold surface when humid air is in contact with it.

5

What is the sentence to help remember the Electromagnetic spectrum?

Giant Xylophones Usually Vibrate In My Room.

6

What is the Electromagnetic spectrum?

Gammas X-ray Ultra-violent Visible Infrared Microwave Radio-wave

7

What is CONDUCTION?

The transfer of energy passed from particle to particle.

8

What is CONVECTION?

The transfer of heat by the actual movement of particles.

9

What is RADIATION?

Electromagnetic waves that directly transport energy through space. (particles are not needed for the transfer of radiation).

10

What does conduction work best in?

Solids

11

What does convection work best in?

Fluids (Liquids and Gases)

12

What is the big bang theory?

Scientists believe that the big bang theory was the creation of the universe.

13

What is a virtual image?

An optical image formed from the apparent divergence of light rays from a point.