Starter quiz
- The word 'energy' has a scientific meaning, but also has non-scientific meanings in everyday life. Which pupil is using the word energy with it's proper scientific meaning?
- Which of these do you think have energy?
- a moving car ✓
- a hot pie ✓
- firewood ✓
- a stretched rubber band ✓
- the human body ✓
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- Which do you think has more energy?
- 100g of ice
- 100g of cold water
- 100g of hot water ✓
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- Which do you think would have more energy?
- A slack bungee rope.
- A bungee rope stretched by 1 metre.
- A bungee rope stretched by 5 metres. ✓
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- Which do you think has most energy due to its movement?
- A train at 80 mph. ✓
- A train at 50 mph.
- A train at 60 mph.
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- Starting with the least energy, sort these food items into order of increasing energy content.
- 1⇔A stick of celery.
- 2⇔A slice of toast with low-fat spread.
- 3⇔A cupcake with icing.
- 4⇔A serving of deep-fried fish and chips.
Exit quiz
- Which statement best describes energy?
- Energy is a substance.
- Energy is a force.
- We say objects have energy when they have certain properties. ✓
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- Which of the below properties mean an object has energy?
- If the object is moving. ✓
- If the object is high up. ✓
- If the object is stretched. ✓
- If the object has a temperature. ✓
- If the object contains chemicals that can react. ✓
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- When an object has energy, we say it has a ______ of energy.
- 'store' ✓
- Match each reason an object can have energy to the correct name of each energy store.
- gravitational store of energy⇔objects that are raised up ✓
- thermal store of energy⇔objects that have a temperature ✓
- elastic store of energy⇔objects that are stretched or squashed ✓
- chemical store of energy⇔objects that contain chemicals that can react ✓
- kinetic store of energy⇔objects that are moving ✓
Identify the energy stores that this moving aeroplane has.- a gravitational store of energy ✓
- a thermal store of energy ✓
- an elastic store of energy
- a chemical store of energy ✓
- a kinetic store of energy ✓
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- Which of these increase the stored energy?
- If the object's speed increases. ✓
- If the object is put at a lower height.
- If a stretched elastic band is slowly allowed to become slack again.
- If an object's temperature rises. ✓
- If a battery is recharged. ✓
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Worksheet
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Video
Lesson Details
Key learning points
- Objects can have energy because they are: moving, raised, hot, stretched/squashed, or contain chemicals that can react.
- When an object is said to have energy, this is really just saying the object has certain properties.
- Objects can have gravitational, thermal, elastic, chemical and kinetic stores of energy.
- Having energy means having properties that allow objects to interact, cause changes and make things happen.
Common misconception
Energy is some sort of physical substance that objects have.
Energy is just a label for having certain properties. The properties are what allow objects to interact / cause change / make things happen.
Keywords
Chemical store - Objects that contain chemicals that can react, have a chemical store of energy.
Thermal store - Objects have a thermal store of energy because of their temperature.
Kinetic store - Objects that are moving have a kinetic store of energy.
Gravitational store - Objects that are raised up have a gravitational store of energy.
Elastic store - Objects that are stretched or squashed have an elastic store of energy.
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