Physics 1

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Physics 1

• Energy Temperature

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C/W Energy Transfer 4-Feb-16

• Aims- 4 list energy forms
• 5 draw energy transfer diagrams
• 6 explain what efficiency means
• Starter 5 minutes
• Write down as many different forms of energy as
  you can think of e.g. heat energy

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Copy notes 2 minutes

• There are nine forms of energy four stored and
  five on the move
• Stored Moving
• Chemical Kinetic (movement)
• Elastic Heat
• Gravitational Light
• Nuclear Sound
• Electrical

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Copy notes 5 minutes

• Energy is measured in joules (J) and never gets
  used up it is conserved
• When something happens, energy is being changed
  from one form into another
• e.g. dropping a ball turns gravitational energy
  into kinetic energy
• e.g. using a toaster turns electrical energy into
  heat energy

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Activity 15 minutes

• Cut out 4 devices from the catalogue
• Decide what energy changes they cause
• Stick-in the picture and add arrows to show the
  energy transfers, like this

Extension make up numbers of joules to add to
the arrows
Heat
Electrical
Sound
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Copy notes 2 minutes

• Some energy transfers are useful and others are
  wasted
• e.g. a light bulb transfers energy usefully as
  light, but wastes energy as heat
• Devices that waste less energy are called energy
  efficient

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Activity 10 minutes

• On your arrows, highlight the transfers that are
  useful and wasted using different colours

Extension work out how efficient the device is
using your numbers
?
Heat
Electrical
Sound
?
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Plenary Questions 10 mins

• What form of energy is stored in a battery?
• What is the unit of energy?
• If 100J of energy goes into a kettle, and 90J is
  converted to heat, how much sound energy comes
  out? How do you
• know?
• What device turns sound energy
• into electrical energy?

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Homework

• Either (easier)
• Do three more devices using pictures from the
  newspaper or magazines at home
• Or (harder)
• Make a chart with all forms of energy on it and
  lines joining them up on the lines
• write the name of a device that converts
  those types of energy into each other

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Are You On Target Today?

• Aims- 4 list energy forms
• 5 draw energy transfer diagrams
• 6 explain what efficiency means

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C/W Energy Resources 4-Feb-16

• Aims- 4 name some energy resources
• 5 describe how they are useful
• 6 compare their pros and cons
• Starter 5 minutes
• Which energy resources are these?
• We av Sam is bo!
• Can rule Is full of es
• Arsol

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Copy notes 5 minutes

• Energy resources are used to generate electricity
  by turning a turbine attached to a generator
• Resources which will not run out are called
  renewable
• Fossil fuels (coal, oil and gas) are
  non-renewable
• Burning fuels releases carbon dioxide into the
  atmosphere which may cause global warming

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Practical Wind Power 30 mins
Turbine

• Set-up the equipment as shown
• Draw a labelled diagram
• Record the voltage generated with the hairdryer
  at different distances from the turbine
• Plot a graph of your results

Generator
Cork
Wires to COM and VOmA holes
Slots for cardboard vanes
Voltmeter on 200mV
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Plenary Questions 10 mins

1. What did you find out from the experiment? (Hint
   The more the more )
2. How did you make it a fair test?
3. List three fossil fuels
4. What does renewable mean?
5. List three renewable energy resources

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Homework

• Everyone (easier)
• Find two examples of biomass and describe them
  (include one pro and one con)
• Extra for superstars (harder)
• Find out what hydroelectric power is, and draw
  an energy transfer diagram (Hint it has three
  steps ending with electrical)

For help on both, look on http//home.clara.net/d
arvill/altenerg/index.htm Email Word docs to
drwelch_at_teacher.com
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Are You On Target Today?

• Aims- 4 name some energy resources
• 5 describe how they are useful
• 6 compare their pros and cons

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C/W What is Heat? 4-Feb-16

• Aims- 4 know that heat flows from hot to cold
• 5 describe what happens when heating
• 6 explain features of a cooling curve
• Starter 5 minutes True or False?
• Heat is a form of energy
• Heat is measured in ºC
• Heat rises
• There are particles of heat
• A fridge door stops the cold getting out

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C/W What is Heat? 4-Feb-16

• Aims- 4 know that heat flows from hot to cold
• 5 describe what happens when heating
• 6 explain features of a cooling curve
• Starter 5 minutes True or False?
• Heat is a form of energy
• Heat is measured in ºC
• Heat rises
• There are particles of heat
• A fridge door stops the cold getting out

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Copy notes 5 minutes

• Heat is a form of energy
• Heat energy moves from areas of high temperature
  (hot) to areas of low temperature (cold)
• Remember Heat energy can move to or
• from the surroundings (the air)

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Copy notes 5 minutes

• When something absorbs heat energy
• its particles move faster
• it expands and
• its temperature goes up
• until it melts/boils, then
• its particles spread apart and
• its temperature stays the same while it is
  melting/boiling.

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Watch Animation
Play heating in KS3 Resources
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Watch Demo
Datalog stearic acid curve
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Copy and label graph from demo
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Plenary Interactive
DnD particles in Whiteboard
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Homework

• Everyone (easier)
• Describe what happens to an ice cube left out in
  a warm room use these words heat, energy,
  flow, temperature, melt, particles,
  surroundings
• Extra for superstars (harder)
• Explain why the temperature of water in a pan
  never goes above 100ºC no matter how much heat
  you put in (Think where is heat also getting
  out?)

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Are You On Target Today?

• Aims- 4 know that heat flows from hot to cold
• 5 describe what happens when heating
• 6 explain features of a cooling curve

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C/W How is Heat Transferred 4-Feb-16

• Aims- 4 know four ways for heat to flow
• 5 describe how each is different
• 6 explain each using a particle model
• Starter 5 minutes
• What is this dingbat?

HOT!
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Copy notes 2 minutes

• Heat can be transferred in four ways
• Conduction
• Convection
• Radiation
• Evaporation

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Find Out and Explain

• Heat can be transferred in four ways
• Conduction p106 p8, 50 p84 p4.7
• Convection p110 p8-9, 50-1 p84 p4.7
• Radiation p112 p9-11, 51 p84 p4.7
• Evaporation p115

Pages in orange in orange book (Heinemann
2) Pages in blue in blue book (Physics by
Milner) Pages in purple in purple book (Physics
for AQA) Pages in yellow in yellow book (Modular
Science)
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Demos

• When finished, draw and explain each demo in your
  own words

Wood/metal rod, conv ring, alcohol
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Homework

• Revision for test

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Are You On Target Today?

• Aims- 4 know four ways for heat to flow
• 5 describe how each is different
• 6 explain each using a particle model