- Ask pupils to think about how rockets get away from the Earth. Illustrate using secondary sources,
eg using software simulations or video clips of space shuttles, or demonstrate with a water rocket.
- Establish that, for a rocket to get off the ground, a thrust force greater than the rocket's weight is needed. It is clear that it gets easier the higher the rocket travels (less fuel is needed). However, the rocket has less mass, having shed some of its load, so it would be accelerating even if gravity were the same.
- Ask pupils to use secondary sources to present an account of space exploration.
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- show,
eg by a force diagram, that a rocket needs a large upward force to rise against gravity
- describe,
eg using annotations, that the gravitational force decreases as the rocket gets further from the Earth
- describe some of the landmarks of human exploration of space,
eg Yuri Gagarin, Valentina Tereshkova, Neil Armstrong, Helen Sharman
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