Gravity+in+space

9J Satellites and space

Gravity in space
Recall how gravity changes with distance. Explain how changing gravity affects spacecraft. Explain why planets stay in their orbits. Describe what a satellite is and some of the things it can be used for.
 * Outcomes (what you will be able to do by the end of this lesson) **

> media type="custom" key="22288388"
 * Starter **
 * Review homework and completed work from last lesson
 * Brainstorm (and later research) what you know about satellites
 * Why does the Earth spin? Guess then watch the video below

> media type="file" key="ES9_Jb118_18vvv.mp4" width="640" height="480" > > media type="file" key="ES9_Jb118_03ani.swf" width="640" height="480" >
 * Activities **
 * 1) How does distance affect gravity?
 * 2) Q1-3 from p118-9 of Exploring Science 9 to demonstrate your understanding.
 * 3) complete [[file:ES9_CHAP_Jb3.pdf|Gravity questions]] to test your understanding.
 * 4) Use data and graphs to answer questions about gravity and the solar system in [[file:ES9_Jb118_09msu.xls|selecting the data]].
 * 5) What are satellites?
 * 1) Use the animation below and the links on Satellites and space to find out more about satellites and how they stay in their orbits.
 * Q4,5 from p118-9 of Exploring Science 9 to demonstrate your understanding.
 * 1) Complete [[file:ES9_CHAP_Jb5.pdf|Different orbits]] to test your understanding.
 * 2) Extension: Find out about the [[file:ES9_CHAP_Jb6.pdf|Origin of the moon]]. Read the worksheet and answer the questions.


 * Summary **
 * Review completed classwork / key term quiz
 * [[file:ES9_CHAP_Jb1.pdf|Quiz questions]] on gravity and space


 * Homework activity options **
 * Download complete the gapfill on [[file:ES9_Jb119_18msc.doc|Gravity in space]], print-off and stick into your exercise book. You can copy and complete if you have a problem printing.
 * Research of examples of satellites and their uses. Present research as presentation or a poster.

Formation of the solar system media type="file" key="ES9_Jb118_05vvv.flv" width="640" height="480" Getting there (using gravity to move satellites and spacecraft) media type="file" key="ES9_Jb119_02vco.flv" width="640" height="480"
 * Useful extras **

What 9AK learned about satellites media type="custom" key="21920748"
 * Student work**

What 9CV learned about satellites media type="custom" key="22224580"