The World Communicates

Unit Plan Summary

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No.	Title	Activity	Skills	Context	Physics	Dom	Hrs
1	Introduction						1
2	Waves	Investigation: slinkies & ropes (A1.1)	P12. Data gathering P13. Presentation		Waves carry energy and come in several types	D1.2	1
2	Waves	Homework (A1.2,4)	P12. Data gathering P13. Presentation		Waves carry energy and come in several types	D1.2	1
3	Sound waves	Teacher demo: bell jar, reflection	P14. Concluding		Sound is a mechanical wave that needs a medium; echoes	D1.3 D2.1 D2.4	1
4	More about sound	Investigation: sound sources and CRO (A2.1)	P12. Data gathering		Sound is a longitudinal pressure wave	D1.5 D2.2	2
5	Measuring sound	Investigation: sound sources and CRO (A1.3)	P13. Terminology		Pitch related to frequency and volume to amplitude	D1.4 D2.3	2
6	Frequency & wavelength	Student devised investigation (A1.5)	P11. Planning P12. Data gathering		v = f l	D1.6	3
7	Superposition	Investigation: sound sources and CRO (A2.2)	P14. Concluding		Superposition, interference, beats	D2.5	2
7	Superposition	Homework (A2.3)	P14. Concluding		Superposition, interference, beats	D2.5	2
8	Electromagnetic waves	Analysis	P12. Secondary sources	Kepler, Newton, Huygens, Maxwell, Hertz	Light is a transverse wave, finite velocity, without medium	D3.1	2
9	Reflection	Investigation: lab optics (A4.1, A4.2)	P12. Data gathering	Euclid's optics, Roman heliograph Ionosphere reflection Telescope	Reflected angle = incident angle	D2.4 D4.1 D4.2	2
9	Reflection	Homework (A4.2)	P12. Data gathering		Reflected angle = incident angle	D2.4 D4.1 D4.2	2
10	Refraction	Investigation: lab optics (A4.3, A4.4)	P12. Data gathering P14. Concluding	Snell	Refractive index & light speed; Snell's law	D4.4 D4.5 D4.6	2
10	Refraction	Homework (A4.5)	P12. Data gathering P14. Concluding	Snell	Refractive index & light speed; Snell's law	D4.4 D4.5 D4.6	2
11	Total internal reflection	Investigation: lab optics	P12. Data gathering P14. Concluding	Kepler Optical fibres	Total internal reflection & critical angle	D4.7 D4.8	2
12	Inverse square law	Student devised investigation (A3.1)	P11. Planning P12. Data gathering	Kepler Range limitations	Inverse square law	D3.4 D3.6	3
13	Radio & TV	Investigation: radio transmitter & detector	P12. Data gathering P14. Concluding	Marconi, Tesla Telecommunications & mass media	Modulation & energy transformation: radio, TV, fax, modem, mobile	D1.1 D3.5	2
14	Electromagnetic spectrum	Analysis (A3.2,3)	P12. Secondary sources	Frequency allocations	The EM spectrum and applications Atmospheric filtering	D3.2 D3.3	1
15	Digital Age			Electronics Computer networks		D5.1	1
16	Research assignment	Presentation (A5.1)	P12. Secondary sources P13. Presentation		Physics applications: internet, GPS, CD/DVD, photonics		3

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