non renewable energy sources - wordpress.com...10.5 energy supplies and then there was king coal!...

Non – renewable energy sources

08/01/2016 © cgrahamphysics.com 2016

10.5 Energy supplies

Up until the mid-1700s people relied on...

...water to power waterwheels...




...wind to power windmills...




...horses for transport (riding, pulling carts, etc)...




...wood for heating and cooking...




...candles and oil lamps for lighting.

The candles were made of animal fat and the lamps used whale oil - they were all a bit smelly!



And then there was KING COAL!

When coal was mined in large quantities we could:

• Make large quantities of iron and steel

• Mine coal from deeper in the ground

• Improve transport with iron railways and iron ships that used steam power

• Make coal gas to power lights and cooking stoves

• Heat houses better



And then there was OIL!

When we found out how to refine crude oil into

• petrol

• diesel

• special fuel oils (like aircraft fuel)

steam engines gave way to lorries and cars.

Aeroplanes were invented and used these light powerful fuels.



Natural gas

Natural gas was found underground with or near oil.

Eventually huge pipelines were built to move this across seas and continents and it replaced coal gas.


To describe how electricity is made

To identify pros and cons of fossil fuels and nuclear power


End

Describe how coal is made without using words (maybe a mime).?

How would it be different for natural gas or oil?



What came next?

And one of the most important uses of coal, oil and gas now is..

..making electricity.

Coal, oil and gas are burnt in power stations to turn water into steam, which turns turbines and generate electricity.


Demo: Steam Engine to show pressure increase

Movie Cooling Towers 08/01/2016 © cgrahamphysics.com 2016

7I - Energy - 01 - Movie Cooling Towers - OU 00010023.avi

14 of 39 © Boardworks Ltd 2008

Nuclear energy

Nuclear power stations use fission in a controlled

way to generate electricity.

nuclear reactor

boiler

turbines

generator

national grid

Unfortunately, fission reactions create dangerous

radioactive waste products. Is nuclear energy renewable?

The process is similar to that used to

generate electricity from fossil fuels.


Labelling parts of a power station


But fossil fuels have some major problems.

One problem is that they don’t last for ever.

When the last drop of oil comes from the ground...

...and the last bucket of coal comes from a mine……

...what are we going to do?

Coal, oil and gas are known as non-renewable resources - we cannot renew them. Once they have run out, they are gone.

They aren’t making it any more!



Environmental effects of burning fossil fuels

Burning fossil fuels also

produces carbon dioxide

which is released into the

atmosphere.

Carbon dioxide is a

greenhouse gas.

Burning some fossil fuels creates chemicals

like sulfur dioxide, which cause acid rain.

Using fossil fuels to produce electricity has consequences

for the environment.

Stopwatch Graph Home

08/01/2016

The Greenhouse Effect


08/01/2016

Greenhouse Effect: World Temperatures


08/01/2016

The Green House Effect


08/01/2016

Acid rain gases

Acid rain

Fish poisoned

Coal is burned

Dying trees

Blown to scandinavia

Greenhouse gases

Water vapour

Acid Rain

Worksheet

7I - Energy - 02 - Worksheet acid rain cut and stick.ppt

You have five minutes to prepare a presentation in the style of a news caster/reporter on whether you think coal or nuclear power stations are better.



How is electricity generated?

non renewable energy sources - wordpress.com...10.5 energy supplies and then there was king coal!...

Documents