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Grade 10 Science · Unit 10
Refraction of Light
Light bends at a boundary · Two experiments · Eight key terms
Today we will learn to
📖
Define refraction of light
🐢
Explain why a change in speed bends light
✏️
Trace a ray through a glass slab
📐
Name the rays, angles and lateral shift
Experiment
A laser beam in water
SET UP
Laser or ray box, beaker more than half full of water
FROM ABOVE
Send the beam from air into water
FROM BELOW
Send the beam from water into air
COMPARE
Which way did the beam bend each time?
Presenter notes: Why does a pencil in a glass of water look broken? Today we find out.