Page 132 - Physics_Form_2
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Physics for Secondary Schools
FOR ONLINE READING ONLY
(m) Stars (n) Candle (o) Traffic light (p) Moon
(r) Light emitting
(q) Watasenia plants diodes (s) Lighter (t) Torch
Propagation and transmission
of light Activity 4.1
The propagation and transmission Aim: To explore rays and beams of light
of light are foundational concepts Materials: a flashlight or small handheld
in understanding how light torch (can use a phone flashlight
behaves as it travels and interacts if available), piece of cardboard
with different media. Light or stiff paper, small mirror, piece
of thin cloth or plastic (like a
moves at incredible speeds and transparent bag or thin cotton),
interacts with various materials in needle or sharp object to create
unique ways. This phenomenon holes, dust, chalk powder, or
encompasses a variety of flour to make light paths visible
processes, including reflection, (optional)
refraction, and absorption, all of Procedure
which play a crucial role in how 1. Create a single small hole at the centre of
we perceive our surroundings. the cardboard. Ensure the hole is just big
enough for a narrow beam of light to pass
Rays and beams of light through. We will use this narrow beam of
To explore the concept of a ray and light as a model of a ray of light.
a beam of light, perform Activity 2. Turn on the flashlight and place the
4.1 and Activity 4.2 cardboard in front of it, allowing the light
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Student’s Book Form Two
Physics Form 2 Final.indd 126 25/10/2025 10:27
