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Pages

1Where is Mars?2How long will it take to get to Mars?3Getting to Mars4How do rockets get off the ground?5Producing Thrust6What happens when rocket fuel burns?7Your mission to Mars!8Our need for oxygen9How oxygen gets to our cells10The effects of gravity11How low gravity affects bones12Preventing bones and muscles from becoming weak13Living and working in space14What do astronomers know about Mars?15A space-craft view of Mars16Exploring Mars17Energy for exploration18The rocky surface of Mars19More about the surface of Mars20The Martian atmosphere21The importance of water22The water cycle on Earth23Is there water on Mars?24Surviving on Mars25Your Martian home26Farming on Mars27Soil on Mars28Plants for Mars29Getting energy on Mars30Where will you go next?

Practicals

1Modelling the solar system in the school yard2Rocket Practical3Investigate the Energy in Fuels4Making a Telescope5What factors affect the output of a solar cell?6Modelling Diffusion7Examining Slides of Blood8What bones are like without calcium salts9Flame Test to Identify Metals10The Different States of Water11Water Purification for Human Consumption12Factors Affecting Germination13Solar Cells for Devices14Mars Bingo
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If there is no force of gravity acting, what happens to us?
We feel weightless, and would start to float

Without the force of gravity pulling you downwards you would start to float, and you would need to stay inside your spacecraft to make sure you didn’t float away into space!

You would certainly notice it if you started to float, but a lack of gravity would also cause changes that you might not notice. These would occur slowly over a period of time, and would include changes to our bones and muscles.

What is the job of our bones?

Our bones keep us upright (support) and protect delicate parts of our bodies. Drag the numbers for each bone below to the correct parts of the skeleton!