The World Communicates
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# The World Communicates

A Resource for NSW Physics Teachers
Curated by Fiona Isaacs
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More great information and worksheets.
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## Exploratorium: Science Snacks: Groovy Sounds

A great prac for demonstrating the effects of changing amplitude and frequency on sound waves.
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## Null Hypothesis | Mid Morning Experiment: Speed of Light

A fun experiment relating wavelength, frequency and speed.
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## Lord of the Rings - Lighting of the Beacons

Fantastic for talking about the problems and advantages of using light as as a communication tool (what would be some of the problems in installing a national broadband network in the Middle Earth.)
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## Catalyst: GPS - ABC TV Science

An excellent video about how GPS systems work.

"Amazing GPS how sweet the sound,
that located a reference point like me,
I once was lost, but now am found,
was unlocatable but now positioned globally."
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## Science Vault - 8.2 The World Communicates

A fantastic website of information and worksheets
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## Light.reflection.and.refraction.by.ayush.

Some basic principles and clear examples.
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## Science of Music | Exploratorium

A great website about sound. Not all syllabus relevant, but engaging and interesting.
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## BBC - GCSE Bitesize: What are waves?

A basic introduction to waves from BBC Bitesize.

1. What is a wave?
2. What is the substance that a wave must travel through called?
3. Do all waves travel through mediums?
4. What is the difference between transverse and longitudinal waves?
a. Give an example of each.
5. Copy the picture that demonstrates amplitude and frequency into your notes.
6. What is frequency? What is it measured in?
7. What is the equation for wave speed? (make sure you include units)
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