# Force diagrams

Discussion in 'Science' started by bexnorris, Dec 2, 2009.

1. ### bexnorris

I am a PGCE student and will be teaching a top set yr 9 class the 9J topic. On the school scheme of work it says to show them a video on gravity which the school has lost and then draw a force diagram to show how the force of attraction changes as the rocket travels from the earth to the moon. Does anyone have any ideas what i could do instead to get this idea across/ a video I can access from somewhere that shows this, or even a foce diagram that shows this that as a last resort I could just ask them to copy and use to explain to them what is happening. Many Thanks Becky

2. ### bexnorris

I am a PGCE student and will be teaching a top set yr 9 class the 9J topic. On the school scheme of work it says to show them a video on gravity which the school has lost and then draw a force diagram to show how the force of attraction changes as the rocket travels from the earth to the moon. Does anyone have any ideas what i could do instead to get this idea across/ a video I can access from somewhere that shows this, or even a foce diagram that shows this that as a last resort I could just ask them to copy and use to explain to them what is happening. Many Thanks Becky

3. ### sideshow

You could get them to draw a graph to show it? You can use F = GMm/r2 to work out the sizes between the moon and earth. Ask them why zero isn't in the middle and to describe the relationships in detail.

4. ### romancandle

I have used (modified) the Space Ship One Activity on the Upd8 website: I included an additional activity on force diagrams on the spacecraft.

5. ### RhysboyNew commenter

If I remember correctly, there is an activity on Frameowkr science where the pupils have to sequence a set of cards that show a rocket leaving Earth (or is it an astronaut in space?).

6. ### RhysboyNew commenter

Just found it - it is in 9Jd if you have Framework science.
If not, I could email you it.

Any use