1. Refraction is the bending of light as it passes from one medium into another with a different density, caused by a change in its speed.
2. (a) The light ray bends towards the normal upon entering the glass block and bends away from the normal upon exiting, returning to its original direction but shifted laterally.
(b) Two dashed lines perpendicular to the surfaces at the points where the ray enters and exits the glass block.
3. (a) 3.00 × 10⁸ m/s
(b) Slightly less than 3.00 × 10⁸ m/s (approx. 2.99 × 10⁸ m/s)
(c) Approx. 2.25 × 10⁸ m/s
(d) Approx. 2.00 × 10⁸ m/s
4. Refraction occurs because light changes speed when moving between media of different optical densities, causing a change in direction due to the wavefronts changing speed unevenly.
5. From top to bottom: Incident ray, Angle of incidence, Normal line, Refracted ray, Angle of refraction, Emergent ray.
6. towards
7. F - Frequency
A - Amplitude
S - Speed
T - Time period
Parent Tip: Review the logic above to help your child master the concept of refraction worksheet.
