Measuring+speed

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Measuring speed
Explain what is meant by speed. Use a formula to calculate speed. Explain what ‘mean speed’ means. Rearrange the speed formula to calculate distance or time.
 * Outcomes (what you will be able to do by the end of this lesson) **


 * Starter **
 * Complete and mark the [[file:ES9_ASP_K_QQ.pdf|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)

> > media type="file" key="ES9_Ka128_11ani.swf" width="640" height="480" > > **A** If I walk 2 miles in 1 hour, I am going at the same speed as someone who walks half a mile in half an hour. > **B** If a car travels 15 miles in half an hour, it is going at the same speed as a lorry that travels 30 miles in 1 hour. > **C** A cat travelling at 20km/h can out run a dog who can cover 10m every 3 seconds. > **D** The city is 400km away and the train has a top speed of 150km/h. The train will arrive in the city in less than 3 hours. > **E** It takes an apple 4 seconds to fall 2m from a tree to the ground. A conker takes 6 seconds to fall 3.5m. The apple was falling faster than the conker. > **F** A snail moves 15 cm in 2 minutes. It is moving slower than a slug, which takes 1 minute to move 8 cm. > **G** Jenna runs 1000 m in 6 minutes. She is running at the same speed as Danny, who runs 1500 m in 9 minutes. >
 * Activities **
 * 1) Watch the Distance, speed and time brainpop then take the quiz.
 * 2) Discuss calculating speed using the triangle and formula.
 * 1) Discuss mean speed (textbook). What examples can you come up with?
 * 1) Optional: Watch the skoool tutorial on measuring speed for extra help.
 * 2) Complete textbook Q1-4 from p128-9 of Exploring Science 9.
 * 3) Use the triangle to calculate your own speed walking, running and a mean speed over distance.
 * 4) Decide in groups which of the following statements are true and which are false (alternatively groups can work to build explanations for each statement).
 * 1) Complete the [[file:ES9_Ka129_02msu.doc|speed, distance time problems]]
 * 2) Extension: [[file:ES9_CHAP_Ka8.pdf|Complete Cycling speeds]] to test how well you can solve problems on speed


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


 * Homework activity options **
 * Download complete the gapfill on [[file:ES9_Ka129_14msc.doc|measuring speed]], print-off and stick into your exercise book. You can copy and complete if you have a problem printing.


 * Help and review**

How fast can we go on land? Watch to find out media type="file" key="ES9_Ka128_03vco.flv" width="640" height="480" media type="file" key="ES9_Ka128_04vvv.flv" width="640" height="480"
 * Useful extras**