Assesment Revision

Question 1

Population numbers…

Answer 1

Change over time and our influenced by births, deaths and migration into and out of the area.

Question 2

The world’s population has…

Answer 2

Increased over time and it is estimated that the world’s population will continue to increase in the future.

Question 3

What are the problems with ageing?

Answer 3

• Pressure on health care
• A need for care homes
• More pensions needed
• Fewer economically active
• Less tax as there are less people to pay tax

Question 4

What are the problems with youthful populations?

Answer 4

• More schools needed
• In the future, these children will be parents leading to more strain on health services
• Fewer people working
• Less tax as there are less people working and therefore less people paying tax

Question 5

How do governments manage the population?

Answer 5

Governments have to manage their countries and populations if they become too big or small or if they have too many old people and too many young people.

Question 6

China- anti-natalist

Answer 6

• Too many young people
• Introduced the One Child Policy
• Fined people who had more than one child
• Some women were sterilised
• Childcare were offered to couples who only had one child

Question 7

Singapore- Pro-natalist

Answer 7

• Not enough children and too many elderly
• Helping single people find a partner by providing social opportunities
• Paid child before working parents

Question 8

Electricity…

Answer 8

Is a very convenient form of energy that can be generated using different energy resources.

Question 9

What is renewable energy?

Answer 9

Renewable energy is energy that is infinite and will never run out.

Question 10

What is non-renewable energy?

Answer 10

Fossil fuels are non-renewable because they will run out one day.

Question 11

Examples of non-renewable energy;

Answer 11

Coal
Oil
Gas

Question 12

Examples of renewable energy;

Answer 12

Hydroelectric energy
Wind power
Solar power
Geothermal energy

Question 13

Fossil fuel-

Answer 13

A fossil fuel is a natural fuel formed by the remains of pants or animals.

Question 14

Sustainability-

Answer 14

Meeting the needs of the present without compromising the ability of the future generations to meet their own needs.

Question 15

Global warming-

Answer 15

A gradual increase in the overall temperature of the earth’s atmosphere because of an increased level of carbon dioxide and other pollutants.

Question 16

Advantages of Fossil Fuels:

Answer 16

Fairly easy to find
Reliable
Generate a large amount of energy

Question 17

Disadvantages of Fossil Fuels:

Answer 17

Carbon is given off which causes Global warming
They will eventually run out
Harmful to the environment

Question 18

Advantages of renewable energy:

Answer 18

Supply is infinite
No harmful gases
Sustainable forms of energy are generated

Question 19

Disadvantages of renewable energy:

Answer 19

Wind turbines are unsightly
Big cost
Cannot be used in every environment

Question 20

The rich north…

Answer 20

Consume a large amount of fossil fuels. They have the money for renewable sources.

Question 21

The poor south…

Answer 21

Use natural materials such as wood to generate energy.

Question 22

The Greenhouse Effect;

Answer 22

1. Solar energy from the sun passes through the atmosphere
2. Some energy is reflected outer space
3. Earth’s surface id insulated by the sun and radiates the heat back out towards space
4. Greenhouse gases in the atmosphere trap some of the heat

Question 23

Acting sustainably means…

Answer 23

Taking care of the amount of resources to save the beings in the future

Question 24

Individual actions

Answer 24

Walking, cycling, taking the bus, recycling waste products, switching off electrical appliances after use

Question 25

National/ Global actions

Answer 25

Reduce oil by using non-petrol cars
Insulating homes
Building more wind farms
Solar panels worth less