ENERGY RESOURCES

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ENERGY RESOURCES

• Unit 7i
• (adapted)

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index
lesson 1 What is fuel? Homework task 1 Lesson 2
Energy types and transfer. Lesson 3 The safe use
of a Bunsen burner. Homework task 2 Lesson 4
Comparing the energy output from different Bunsen
flames Homework task 3 End of unit assessment
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Lesson 1

• What is fuel?

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Objectives Outcomes

• To learn what fuels really are.
• To learn what happens to the energy in fuels.

• Be able to name different fuels.
• Know what kind of energy is in fuel.
• Know what useful energy comes from machines.

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Equipment
One Bunsen burner, kettle, mug, teabag, matches,
tripod spoon. (for demo) Model steam engine
fuel tablets. Model generator
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Demonstrations
video
video
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The generator
what type of energy is in the fuel?
what useful energy comes out?
what fuel does it use?
what wasted energy comes out?
How will I know that you have understood?
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A bit more to do

• What is fuel?
• This is about deciding which fuels are used and
  what types of energy are involved.
• This may be set as homework.
• Cut Paste sheet 1 (full sheet)
• Cut and paste sheet 2 (tables only)

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Homework task 1

• What is fuel?
• This is about deciding which fuels are used and
  what types of energy are involved.
• Complete WHAT IS FUEL? Due next lesson.
• Cut Paste sheet 1 (full sheet)
• Cut and paste sheet 2 (tables only)

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Plenary
use mini whiteboards

• The names of 5 fuels
• What energy type is in fuels?
• What do machines all do?

Check back to objectives and outcomes.
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Lesson 2Energy Resourcesand Energy Transfer

• What are fuels and why are they useful?

West Wight Middle School Science
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Objectives and outcomes

• To gain a good knowledge of the fuels we use.
• To understand how we release the energy in fuels.
• Learn about energy types and transfer.

• Know that energy can be converted from one type
  to another.
• Know that energy transfers cause some energy to
  be wasted.

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Fuels
din dins
Wood
Coal
Mineral oil
Natural gas
Butane gas
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What is a fuel?
All fuels are concentrated stores of energy.
Coal Mineral oil Natural gas Wood any
more?
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Links
Sky News Buncefield fuel depot BBC News
Buncefield fuel depot Hand Grenade in Newport,
Isle of Wight
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What fuels do these use?
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Machines
Machines change fuel energy into a different type
of energy.
ENERGY IN
ENERGY OUT
energy transfer
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Power Station A huge machine
What is a power station for?
To change the energy in mucky coal into something
more useful
Electrical energy
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Fuel For A Power Station
COAL Chemical Energy
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Other power stations use
GAS
MINERAL OIL NUCLEAR ENERGY DOMESTIC WASTE
but they are all transfer energy.
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The power station converts the chemical fuel
energy into
electrical energy.
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Energy out
Useful energy Electricity.
Wasted energy Heat and sound.
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Steam Engine
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Steam Locomotive
Very Wasteful
Lots of noise
Lots of wasted heat
Not so much movement!
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Energy transfer
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Energy transfer
IN
OUT
Useful Movement.
converter
Wasted Heat Sound.
Chemical energy in coal.
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Getting the brain in action

• Name one energy source we use at home that is not
  a fuel.
• What type of energy is in fuels?
• What happens to energy in a machine?
• Power stations convert the energy in fuel into
  electrical energy. Why do we get less energy out
  than we put in?

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Checking your learning
Objectives of this lesson.
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Lesson 3

• The safe use of a Bunsen Burner and preparing for
  an investigation.

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Equipment

• Bunsen burners 16
• Matches
• Study guides
• Rubber bands for hair

• Exercise books
• Study guides
• Diary
• Writing drawing equipment
• Homework

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Objectives and outcomes

• Learn how to set up and use a Bunsen Burner
  safely.
• Learn how and why Bunsen Burners can make
  different flames.

• Confidently use a Bunsen Burner.
• Know how to be absolutely safe.
• Know how to change the heat output.
• Know about the energy transfer.
• Be able to draw a scientific diagram.

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The safe use of a Bunsen burner

• Draw an accurate scientific diagram of a Bunsen
  burner.
• Annotate it to explain the functions of its parts.

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RISK!

• THIS IS A DANGEROUS ACTIVITY!
• LISTEN to safety instructions.
• FOLLOW safety instructions.

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Using the Bunsen A quick check of your
knowledge and skills.
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Homework task 2

• Devise an imaginative cartoon strip or flow chart
  to explain the safe setting up and use of a
  Bunsen burner. You might like to include some of
  the consequences of improper use.
• Why is this device called the Bunsen burner?
  Write a short paragraph to describe who Bunsen
  was and what he did for science. (own words
  please)

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How will the apparatus be set up?
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Preparing for an investigation.

• Why does the Bunsen burner have a valve at its
  base?
• What fuel does the Bunsen burner use?
• What gas from the air is used when the burner is
  alight?
• Explain why different valve positions produce
  flames of different temperatures.
• Why is it essential to have the valve closed when
  the Bunsen is first lit?
• Why do you think different Bunsen burners may
  have different energy outputs?
• What effect will the Bunsen flame have on the
  temperature of the water in the beaker?
• Why is the thermometer not touching the base of
  the beaker?
• How will you support the thermometer safely?
• How can you use this apparatus to compare
  different Bunsen flames?
• How can you check your results for accuracy?

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Plenary

• I can set up and use a Bunsen Burner safely.
• I know how and why Bunsen Burners can make
  different flames.
• I can use a Bunsen burner confidently .
• I know how to be absolutely safe.
• I know how to change the heat output.
• I know about the energy transfer.
• I can draw a scientific diagram.

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Lesson 4

• Comparing the energy output from different Bunsen
  flames

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Equipment

• Bunsen burners 16
• Tripods with gauzes
• Matches
• Thermometers 16
• Measuring cylinders
• Goggles
• Results tables
• Rubber bands for hair
• 250 cm³ glass beakers
• Retort stands clamps
• Calculators
• Timers

• Homework
• Exercise book
• Study guide
• Drawing writing equipment
• Calculator
• Mini whiteboard, pen eraser.

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Objectives outcomes

• Learn how to measure how much energy transfers.

• Know how to work out heat energy transfer.
• A set of accurate results.
• A written conclusion.

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Planning

• Instructions
• Discuss and devise a fair test to compare the
  energy output of Bunsen flames (valve closed,
  valve slightly open, valve half-open and valve
  full open).
• Think your test through, then investigate. (No
  written work yet.)
• When you are certain that your results are
  accurate, analyse and conclude. (Book work Its
  your results and conclusion I need to see.)

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Measurement of Energy

• Energy is measured in terms of the work it can
  do.
• 1 Joule of energy is required to move an object 1
  metre using a force of 1 Newton
• In other words.
• It takes 1 Joule to lift 1 Newton 1 metre
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• Energy and temperature rise
• It takes 4200 Joules of energy to raise 1kg of
  water through 1C
• Or
• Energy 4.2 x volume of water (cm³) x
  temperature rise (C)

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Using Excel
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Analysis

• Discuss your results as a group.
• Work in pairs using a mini whiteboard to devise a
  conclusion.
• CLASS DISCUSSION ABOUT CONCLUSIONS (draft on
  screen)
• Redraft you conclusion in you exercise book.
  (Finish for homework)

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Lesson 5

• Do different fuels contain different amounts of
  Energy?

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Equipment

• For demonstration only
• Burning dishes
• Fuels to burn
• Fire lighter
• Meths cotton wool
• Wooden spills
• Sawdust
• Matches
• Thermometer
• Timer

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Objectives

• To learn about the energy in different fuels.
• To revise how to calculate how much useful energy
  is released from different fuels.
• To learn about sustainable and non-sustainable
  fuels.
• To write a conclusion to an appropriate level.

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Check your learning

• Self-evaluation

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Do different fuels contain different amounts of
Energy?

• You have seen a demonstration of different fuels
  burning.
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• Use the results from this demonstration to
  discuss what you saw.
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• Which of the fuels in the demonstration are
  derived from sustainable sources and which are
  not.
• All the fuels needed a little energy input before
  they started to burn. Did some fuels need more
  input than others?
• Which fuels released the most energy? How do you
  know?
• Was the test completely fair? Why?

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Conclusion

• Check self evaluation
• Write a clear conclusion based on your
  observations and your scientific understanding.

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Lesson 6

• Energy converters

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Objectives
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Energy converters
USEFUL ENERGY OUT Movement KINETIC ENERGY
ENERGY IN Chemical energy (petrol) POTENTIAL
ENERGY
WASTED ENERGY OUT Heat Sound THERMAL ENERGY
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Assessment
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Lesson objectives

• To help find which bits of learning need a bit
  more teaching.
• To give you some experience of what the SAT will
  look like.
• To assess your learning at levels 5 and 6.