Waves, Sound and Light — O/L Science

What must I remember about Waves, Sound and Light?

• Wave properties: amplitude, wavelength (λ), frequency (f), period (T), wave speed (v)
• v = fλ; T = 1/f
• Transverse waves: vibration ⊥ direction of travel (light, water waves)
• Longitudinal waves: vibration ∥ direction of travel (sound, seismic P-waves)
• Sound: needs medium; ~340 m/s in air; faster in denser medium

Test yourself (1 minute)

1. Period (T)

   time for one full wave; T = 1/f

2. Wave speed

   v = fλ

3. Sound

   needs medium; ≈340 m/s in air; faster in liquids/solids

Practise Waves, Sound and Light questions today

Must know

• Light: 3 × 10⁸ m/s (vacuum); electromagnetic wave; no medium needed
• Pitch ↔ frequency; Loudness ↔ amplitude

Source: NIE O/L Science — Unit 11: Waves, Sound and Light

What should I study first?

Next in the syllabus

Where does Waves, Sound and Light fit in the syllabus?

Grade 11 · Term 2