Energy

Workbook pg. 70Analysis Questions pg. 81

What are the types of energy?

Type What is it used for?

Where it comes from

Abundance on Earth

Type: Electricity

What is it used for?lights, computers, homes

Where it comes from?Coal Power PlantsNuclear Power PlantsSolar Panels, Wind Power

Abundance on Earth:Coal and Nuclear power are limited, wind and solar power are unlimited.

Type: Gasoline

What is it used for?Cars, Trucks

Where it comes from?Drilling for Oil

Abundance on Earth:Limited to the Middle East, Alaska and Texas

Type: Food

What is it used for?Feeding humans

Where it comes from?Farms

Abundance on Earth:Limited to Arable Land with Rainfall

Type: Solar

What is it used for?Source of all energy on Earth

Growing cropsHeating EarthCreating electricity

Where it comes from?The Sun

Abundance on Earth:Strongest close to the Equator

Color your map to show what you think the average temperature is

in each part of the world for July.

-50’F - -25’F

33’F – 60’F

-24’F – 0’F

61’F – 85’F

1’F – 32’F

86’F – 112’F

Do most people live where it is warm or cold?

How is solar energy related to food availability?

World Arable Land

Record any new questions you have about temperature now that you have compared your map with the measured temperatures.

1. Why is it colder at the north pole than it is at the south pole?

2. Why is it so hot at the equator?

2. Think about the different types of energy that we discussed. What type of energy did we explore today?

SOLAR!

3. Compare the average world temperature map to the population distribution map. Do most people live where it is warm or cold? Why?

Most people live where it is warm because that is where the arable land is, and it is easier to survive.

4. What might people need to do to stay warm/cold in places where solar energy is weak/strong? What type of energy do these activities use?

1. To keep warm people need to heat their homes using gas or electric heaters.

2. To keep cool, people need to cool their homes with air conditioning or fans which use electricity.

3. All of these activities require using energy from electricity or gas.

5. What do you expect to see in terms of food availability in areas with lots/little incoming solar energy?

Food availability will be lower in areas without much incoming solar energy.

In areas with a lot of incoming solar energy, food availability also depends on rainfall: places with a lot of rainfall will have more food than places with little to no rainfall.

6. In what locations on Earth do people depend more for sources of energy other than the Sun for food and warmth?

People who live furthest from the equator depend more on other sources of energy. Towards the North and South Poles, humans depend more on electricity from coal or nuclear power plants for food and warmth.