Wednesday, 07 December 2011
ENERGY RESOURCES
Unit 7i ~ sets 2 & 3
(adapted)
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Wednesday, 07 December 2011
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
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Wednesday, 07 December 2011
Lesson 1
What is fuel?
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Wednesday, 07 December 2011
Objectives & Outcomes
• To learn what • Be able to name
fuels really are. different fuels.
• To learn what • Know what kind
happens to the of energy is in
energy in fuels. fuel.
• Know what useful
energy comes
from machines.
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Wednesday, 07 December 2011
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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Wednesday, 07 December 2011
The generator
what type
of energy
what useful
is in the
energy comes
fuel?
out?
what fuel
does it
use? what wasted
energy comes
out?
How will I know that you have
understood?
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Wednesday, 07 December 2011
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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Wednesday, 07 December 2011
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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Wednesday, 07 December 2011
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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Wednesday, 07 December 2011
Lesson 2:
Energy Resources
and Energy Transfer
What are fuels and why are they useful?
index West Wight Middle School Science 11
Wednesday, 07 December 2011
Objectives and outcomes
• To gain a good • Know that energy
knowledge of the can be converted
fuels we use. from one type to
• To understand another.
how we release • Know that energy
the energy in transfers cause
fuels. some energy to
• Learn about be wasted.
energy types and
transfer.
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Wednesday, 07 December 2011
Fuels din dins
Wood
Coal
Mineral oil
Natural gas
Butane gas
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Wednesday, 07 December 2011
What is a fuel?
All fuels are concentrated stores of
energy.
Coal ~ Mineral oil ~ Natural gas ~ Wood
~ any more?
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Wednesday, 07 December 2011
Links
Sky News: Buncefield fuel depot
BBC News: Buncefield fuel depot
Hand Grenade in Newport, Isle of Wight
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Wednesday, 07 December 2011
What fuels do these use?
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Wednesday, 07 December 2011
Machines
Machines change fuel energy
into a different type of energy.
ENERGY IN ENERGY OUT
energy
transfer
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Wednesday, 07 December 2011
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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Wednesday, 07 December 2011
Fuel For A
Power
Station
COAL:
Chemical
Energy
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Wednesday, 07 December 2011
Other power stations
use…
GAS
MINERAL OIL
NUCLEAR ENERGY
DOMESTIC WASTE
… but they are all transfer energy.
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Wednesday, 07 December 2011
The power station converts the
chemical fuel energy into…
electrical
energy.
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Wednesday, 07 December 2011
Energy out…
Useful energy…
Electricity.
Wasted energy…
Heat and sound.
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Steam
Engine
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Wednesday, 07 December 2011
Steam Locomotive
Very Wasteful
Lots of wasted heat
Lots of noise
Not so much movement!
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Wednesday, 07 December 2011
Energy transfer
What fuel?
Energy in?
STEAM LOCOMOTIVE
Useful energy out? Wasted Energy out?
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Wednesday, 07 December 2011
Energy transfer
IN OUT
Useful:
converter Movement.
Wasted:
Heat & Sound.
Chemical
energy in coal.
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Wednesday, 07 December 2011
Getting the brain in
action…
1. Name one energy source we use at
home that is not a fuel.
2. What type of energy is in fuels?
3. What happens to energy in a
machine?
4. 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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Wednesday, 07 December 2011
Checking your learning
Objectives of this lesson.
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Wednesday, 07 December 2011
Lesson 3
The safe use of a Bunsen
Burner and preparing for an
investigation.
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Wednesday, 07 December 2011
Equipment
• Bunsen burners: • Exercise books
16 • Study guides
• Matches • Diary
• Study guides • Writing & drawing
• Rubber bands for equipment
hair • Homework
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Wednesday, 07 December 2011
Objectives and outcomes
• Learn how to set • Confidently use a
up and use a Bunsen Burner.
Bunsen Burner • Know how to be
safely. absolutely safe.
• Learn how and • Know how to change
why Bunsen the heat output.
Burners can make • Know about the
different flames. energy transfer.
• Be able to draw a
scientific diagram.
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Wednesday, 07 December 2011
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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Wednesday, 07 December 2011
RISK!
• THIS IS A DANGEROUS ACTIVITY!
• LISTEN to safety instructions.
• FOLLOW safety instructions.
This lesson is all about
the SAFE use of
Bunsen burners.
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Wednesday, 07 December 2011
Using the Bunsen:
A quick check of your
knowledge and skills.
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Wednesday, 07 December 2011
Homework task 2
• Design 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.
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HOMEWORK SHEET
Wednesday, 07 December 2011
How will
the
apparatus
be set up?
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Wednesday, 07 December 2011
Questions for your
whiteboard.
• 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 you get more heat energy when the
valve is open.
• Why is it essential to have the valve closed when
the Bunsen is first lit?
• How can you check your results for accuracy?
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Wednesday, 07 December 2011
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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Wednesday, 07 December 2011
Lesson 4
Comparing the energy
output from different
Bunsen flames
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Wednesday, 07 December 2011
Equipment
• Bunsen burners 16+ • Homework
• Tripods with gauzes • Exercise book
• Matches • Study guide
• Thermometers 16+ • Drawing & writing
• Measuring cylinders equipment
• Goggles • Calculator
• Results tables • Mini whiteboard, pen &
• Rubber bands for hair eraser.
• 250 cm³ glass beakers
• Retort stands & clamps
• Calculators
• Timers
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Wednesday, 07 December 2011
Objectives & outcomes
• Learn how to • Know how to
measure how work out heat
much energy energy transfer.
transfers. • A set of accurate
results.
• A written
conclusion.
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Wednesday, 07 December 2011
RISK
DANGER! Bunsen flames, glass &
hot water.
• One Bunsen per group.
• Don’t sit! Stools underneath.
• Hair tied, use goggles.
• BE A RESPONSIBLE STUDENT!
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Wednesday, 07 December 2011
If you move the valve,
do you get more energy
out?
Instructions
• THINK! 100 cm³ of water
heated for 60 seconds.
• SAFETY!
• Do the test. Get some
results.
VALVE Start temp End temp Temp rise
POSITION
OPEN
½ OPEN
CLOSED
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Wednesday, 07 December 2011
What did you find out?
• Discuss your results as a group.
• Work in pairs using a mini
whiteboard to devise a conclusion.
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Wednesday, 07 December 2011
What did you find out?
CLASS DISCUSSION
ABOUT CONCLUSIONS
(draft on screen) plenary
• Redraft your conclusion in your exercise book.
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Homework Task 3
• Complete your conclusion in your
exercise book.
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Wednesday, 07 December 2011
Lesson 5
Measuring how much energy.
Do different fuels contain
different amounts of Energy?
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Wednesday, 07 December 2011
Equipment
• For demonstration only…
• Burning dishes
• Fuels to burn:
– Fire lighter
– Meths & cotton wool
– Wooden spills
– Sawdust
• Matches
• Thermometer
• Timer
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Wednesday, 07 December 2011
Objectives
• To learn about the energy in different
fuels.
• To learn 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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Wednesday, 07 December 2011
How much energy?
• Last lesson, you found out which
Bunsen flame was hottest.
• How much energy transferred from
the gas to the water?
ENERGY IN ENERGY IN
THE GAS THE WATER
Potential Heat energy
energy
(thermal) 50
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Wednesday, 07 December 2011
Measurement of Energy
Volume Temperature
ENERGY = 4.2 x x rise
of water
Valve position Volume of water Starting temp (°C) Finishing temp (°C) Temp rise (°C) Energy (Joules)
(cm³)
Closed
Part open
Half-open
Full-open
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Wednesday, 07 December 2011
Check your learning
• Self-evaluation
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Wednesday, 07 December 2011
Do different fuels contain
different amounts of Energy?
• You have seen a demonstration of different
fuels burning.
• Use the results from this demonstration to discuss
what you saw.
• Which of the fuels you saw came from sustainable
sources?
• Which fuels released the most energy? How do
you know?
• Was the test completely fair? Why?
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Wednesday, 07 December 2011
Conclusion
• Check self evaluation
• Write a clear
conclusion based on
your observations
and your scientific
understanding.
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Wednesday, 07 December 2011
Lesson 6
Energy converters
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Objectives
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Wednesday, 07 December 2011
Energy converters
USEFUL
ENERGY OUT
ENERGY IN Movement
KINETIC ENERGY
Chemical energy
(petrol)
POTENTIAL
ENERGY WASTED
ENERGY OUT
Heat & Sound
THERMAL
ENERGY
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