Reflection of light test with answers for grade 7 science (free PDF download)

Quick answer: Light is reflected, refracted or absorbed when it meets matter. This grade 7 science test on reflection of light has 8 questions worth 20 marks, to do in 45 minutes: key terms, ray at a mirror and mirror and image. The mark scheme is on a separate page; free printable PDF.

This test covers reflection, plane mirrors, refraction and absorption of light. Measure all angles from the normal, show each step of a calculation and give units. Explanations should be short sentences that name the effect and give its cause.

Level: Grade 7 science (Year 8 · Class 7) · Curriculum: MS-PS4-2

Time: 45 minutes · 8 questions · Total: 20 marks · Calculator allowed

Contents

Question 1 Key terms (3 marks)

State what the normal is. (1 mark)
State the law of reflection. (1 mark)
Name the effect that makes a pencil look bent in a glass of water. (1 mark)

Question 2 Ray at a mirror (3 marks)

The figure shows a ray hitting a plane mirror at 35° to the surface.

A ray reaches a plane mirror.

Calculate the angle of incidence. (1 mark)
State the angle of reflection. (1 mark)
Calculate the angle between the incident and reflected rays. (1 mark)

Question 3 Mirror and image (3 marks)

Wanjiru in Nairobi stands 1.8 m in front of a plane mirror.

State how far behind the mirror her image appears. (1 mark)
Calculate the distance between Wanjiru and her image. (1 mark)
She steps back 0.6 m. Calculate the new distance between her and her image. (1 mark)