Science at key stage 3 (Year 9)
Unit 9K: Speeding up
Section 8: c. How can we increase speed?
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Objectives |
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- to apply knowledge of the particle model in explaining air resistance
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Activities |
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Outcomes |
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Children: |
- Show a video/simulation of a space capsule becoming red-hot as it passes through the atmosphere. Ask pupils to use the particle model to suggest an explanation for the observation.
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- explain that increased air resistance leads to a greater heating effect
- explain how, at higher speeds, the movement of an object is resisted by more particles
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Points to note |
- Pupils could be asked to find out about the properties of materials developed for cladding space capsules, eg Teflon, and high-speed planes (metals with high melting points).
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This unit is divided into sections. Each section contains a sequence of
activities with related objectives and outcomes. You can view this unit by
moving through the sections or print/download the whole unit.
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