Instructions for Objective 5.11
1. 5.11 Starter. Watch the video and think about the question. No need to type anything.
2. 5.11. Watch the videos and animations for the 3 models of Brownian Motion (for Model 3 you need to open the attached). Think about the questions. No need to type anything.
3. 5.11 explained. Check your understanding with the model answers.
4. 5.11 Questions. Forward this e-mail to your blog and complete the questions.
5. Answers to step 2 will be sent separately. Don’t look at them until you’ve done the work!
5.11 Starter
02 November 2011
16:58
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| <<Video - Brownian Motion smoke in air.wmv>> | ||
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· You're looking at smoke particles in air under a microscope
· They appear to be jiggling about
· Why?
· (Don't worry if you can't work this out straight away - Albert Einstein was the bloke who eventually explained what's happening here!)
5.11
28 October 2011
11:10
· 5.11 understand the significance of Brownian motion
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| <<Video - Model of Brownian motion.wmv>> | ||
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Model 1
· What does the red puck represent?
· What do the metal balls represent?
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| <<brownian_motion.swf>> | ||
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Model 3
· What do the "smoke" particles look like?
· Why are they moving?
· What do the "air" particles look like?
5.11 explained
Model 1
· What does the red puck represent?
o The large, visible smoke particle
· What do the metal balls represent?
o The small, not visible air particles
Model 2
· What do the small red particles represent?
o The small, not visible air particles
· What does the large blue particle represent?
o The large, visible smoke particle
· What does the view on the left of the screen represent?
o The view through the microscope lense
· Why can‘t you see the red particles in this view?
o They are too small to see
Model 3
· What do the "smoke" particles look like?
o They are the 5 large, sand coloured particles
· Why are they moving?
o Small, fast moving air particles are colliding with the smoke particles and making them move
· What do the "air" particles look like?
o They are the numerous, small, white particles
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