Unit 5: Light

Which light sources can you see in the scene?

What is the source of light in your classroom now?

How can you see your teacher?

Complete the coin-box investigation. Use a cardboard box with two holes, a coin, flashlight and modelling clay. State a safe method and predictions for the flashlight covered and switched on.

Can you see the coin without the flashlight? Explain.

Can you see the coin when the flashlight shines into the box? Explain.

Complete the conclusion: light travels from ___ to ___, then reflects off ___ into ___.

In the car scene, identify the light source.

Identify the object being seen.

Explain how the person sees the car.

How could the car be seen at night?

Name the two light sources shown: one natural and one used to project a film.

Does light travel along curved or straight paths?

Can light travel around a corner?

Predict what you will see through a straight flexible tube aimed at an object.

Test the straight tube and record the result.

Bend the tube. Predict and test what you will see.

What conclusion does the tube test support?

In the coin ray diagram, which labelled ray is the reflected ray, A or B?

For a Sun–car–person diagram, identify ray 1 from Sun to car and ray 2 from car to person.