Energy Science Process Skills Worksheets

Worksheet 5 (Properties of Light)

1) No, he cannot. Light travels in straight line.
Cardboard C blocks the light when it is moved out of line.

2) E (Opaque)
F (Transparent)
G (Opaque)
H (Not possible to tell)

Worksheet 6 (Light Reflects)

1) I see my own reflection.

2) Light rays are reflected from my body to the surface of the mirror and then into my eyes.

3) Reflectors are cheaper than street lamps and do not consume electricity. Hence, they are usually used on less-travelled roads.

4) They reflect the light from the headlamps, illuminating (light up) the road for the motorists.

Worksheet 7 (Burglar in the Dark)

1) He is using the torch as a light source to help him find his way around.

2) If he switches the lights on, people outside would be able to see the lit-up room and know that someone is inside.

3) As people cannot see through an opaque mask, they are not able to identify him.

4) No, his vision would not improve because the sunglasses would allow less light into his eyes.

5) A light sensor was installed in the toy dog.