T1 P1: Energy

Question 1

2 types of Nuclear Energy.

Answer 1

Fusion and Fission.

Question 2

Energy is released when a nucleus_____.

Answer 2

Splits.

Question 3

What particulates are found in burnt fossil fuels?

Answer 3

Carbon dioxide and Sulfur dioxide.

Question 4

8 Main Energy Resources.

Answer 4

Chemical
Kinetic
Gravitational Potential
Elastic
Thermal
Electrostatic
Nuclear
Magnetic.

Question 5

Renewable energy resources…

Answer 5

Can be replenished.

Question 6

Non-Renewable energy resources…

Answer 6

Cannot be replenished.

Question 7

7 Types of Renewable energy resources.

Answer 7

Wind
Solar
Tidal
Waves
Hydroelectricity
Biofuel
Geothermal.

Question 8

4 types of Non-Renewable energy resources.

Answer 8

Coal, Natural Gas, Crude Oil (Fossil fuels), Nuclear.

Question 9

What is Internal Energy?

Answer 9

Energy stored in a systems particles.

Question 10

How do you calculate Internal Energy?

Answer 10

Internal Energy (J) = Kinetic Energy of particles + Potential Energy of particles.

Question 11

What are the three ways of energy transfer?

Answer 11

Heating.
An Electric Current.
Use of Forces.

Question 12

Energy can be…

Answer 12

Wasted or dissipated.

Question 13

How to calculate Kinetic Energy?

Answer 13

Kinetic Energy (J) = 1/2 x Mass (Kg) x (speed)2

        Ek               = 1/2 x      M         x V2

Question 14

What are 2 things kinetic energy is directly proportional to?

Answer 14

The Mass
The square of speed.

Question 15

How do you calculate Gravitational Potential Energy?

Answer 15

Gravitational Potential Energy (J) = Mass (kg) x Gravitational Field Strength (N/kg) x Height (m).

Question 16

How do you calculate Density?

Answer 16

Density = Mass / Volume.

Question 17

How do you calculate Mass?

Answer 17

Mass = Density x Volume.

Question 18

How do you calculate Volume?

Answer 18

Volume = Mass / Density.

Question 19

How do you calculate elastic potential energy?

Answer 19

Elastic Potential Energy (J) = 1/2 X Spring constant (n/m) X extension (m)

Question 20

What is Specific Heat Capacity?

Answer 20

The energy required to increase the temperature of 1kg of a substance by 1’c

Question 21

How do you calculate Specific Heat Capacity?

Answer 21

Energy= mass X specific heat capacity X temperature change

Question 22

Define power.

Answer 22

The rate at which energy is transferred or work is done.

Question 23

How do you calculate Power?

Answer 23

Energy transferred/time OR Work done/time

Question 24

How do you calculate efficiency?

Answer 24

useful energy input/total energy input OR useful power output/total power output

Question 25

How can the EFFICIENCY of a system be increased?

Answer 25

Reducing or recycling waste output