Gravity+and+weight

9J Satellites and space

Gravity and weight
Explain what causes weight. Explain why gravity is different on other bodies in the Solar System. Recall how gravity affects objects. Work out the weight of an object.
 * Outcomes (what you will be able to do by the end of this lesson) **


 * Starter **
 * Complete and mark the quick quiz
 * Traffic light the first column on your target sheet (red = I can't do this, yellow = I can do this a little, but I'm not sure, green = I can confidently answer questions on this)

> > > - why large masses produce more gravity and small masses > - how gravity is similar to magnetism > > > > media type="file" key="ES9_Ja116_09ani.swf" width="640" height="480" > > > media type="file" key="ES9_Ja117_01ani.swf" width="640" height="480" > >
 * Activities **
 * 1) How big is space? Use this fun link to BBC future to find out.
 * 1) Find out about gravity by watching the skoool tutorial or the brainpop video.
 * 1) Take part in the gravity demonstration to find out:
 * 1) Find out the definitions for mass, weight and gravity and record them in your exercise book
 * 1) Complete Q3,5 from p116 of Exploring Science 9
 * 1) Test your knowledge of mass and weight on earth
 * 1) Write down an equation that can be used to calculate the weight on an object on the Earth
 * 1) Read p117 of Exploring Science 9 and discuss why gravity varies on other planets and moons
 * 1) Test your understanding of how gravity affects weight on different planets
 * 1) Complete [[file:ES9_Ja117_07msu.doc|Launching Apollo]] to show your understanding of mass and weight changes during space flight
 * 1) Produce graphs in excel to work out how [[file:ES9_Ja117_02msu.xls|gravity changes on different planets and moons]]
 * 1) Extension: What can you workout about gravity? Try to complete [[file:ES9_Ja117_05msu.xls|working out gravity]]


 * Summary **
 * Review completed classwork / key term quiz

Download complete the gapfill on, print-off and stick into your exercise book. You can copy and complete if you have a problem printing.
 * Homework activity options **

Why do the planets in our solar system orbit the sun? Watch the [|skool tutorial] to find out
 * Useful extras **

Gravity calculator:

Getting into space (how do we launch satellites) media type="file" key="ES9_Ja117_08vco.flv" width="640" height="480"