1. Energy Transfer & Resources
Renewable vs. Nonrenewable

2. How is Energy Transferred?
Radiation – Sun warms the Earth
Conduction – A metal frying pan heats and cooks food.
Convection – Heater warms the air in your home
Electrical – Wires carry current in power lines
Mechanical – A soccer player kicks the ball;
a machine or engine;
a pulley;
a refrigerator.

3. Energy Transformation
The transformation of energy from forms provided by nature to forms that can be used by humans.
The 2 types of energy sources are Renewable and Nonrenewable.

4. Renewable Resources
Natural resources that are constantly being recycled or replaced by nature.

5. Solar Energy
Heat from the sun (solar radiation) is captured, stored and converted into electricity.
Example:
Solar Panels
Solar panels are expensive upfront, but over time they are cost effective.

6. Wind Power
Wind is converted into electricity by using windmills and wind turbines
Not ideal for all locations (depends on the wind).
Can be expensive upfront, but will be cost effective over time.

7. Hydroelectric Power
Harnessing the power or force of moving water and converting it to electricity.
Example:
Hydroelectric Dam
Expensive upfront
Can cause environmental disruption/damage

8. Biomass Burning organic matter as a source of fuel.
Reduces waste (garbage).
Can plant trees and crops year after year.
Causes air pollution.

9. Geothermal
Harnessing the thermal (heat) energy under the earth’s surface as a source of fuel.
Very efficient (creates a lot of energy).
Can cause environmental damage when building the plant.
Can release greenhouse gases into the atmosphere.

10. Nonrenewable Resources
Natural resources that cannot be replaced by natural processes as quickly as it is used.

11. Fossil Fuels Natural Gas, Coal, and Oil
Most common energy sources because they are relatively cheap and abundant.
BUT, they can cause environmental damage!
Big source of pollution and an excess of Greenhouse Gases emitted into the atmosphere (causing global warming and climate change).

12. Oil and Coal
Crude oil is extracted from underground by drilling and pumping to the surface.
Coal is extracted from underground by mining.
Oil and coal are transported to power plants where they are burned.
The heat and steam produced creates mechanical energy from moving turbines and is converted into electrical energy.

13. Oil and Coal
Oil and coal cannot be replenished and can have very negative effects on the environment.
They release carbon, a Greenhouse Gas, into the atmosphere and are a source of air pollution.

14. Natural Gas
This carbon-based gas is formed underground when plant and animals are buried and exposed to intense heat and pressure.
Similar to oil and coal, natural gas is extracted and transported through pipes to power plants where is it used to create electricity.
This gas cannot be replenished in our lifetime.

15. Nuclear Power Plants
Use energy from a nuclear reactor to run a steam turbine. The turbine is connected to a generator and is converted into electricity.
In the nuclear reactor, Uranium undergoing radioactive decay and is releasing a lot of energy as a by-product!
Uranium cannot be replenished in our lifetime.
Environmental concerns include radioactive waste and nuclear accidents.

16. Nuclear Power Plant Videos
Nuclear Pros and Cons i4
The effects of Chernobyl 30 years later
nobyl-30-years-later