light and reflection.

1

100

Tom and Mary stand in front of a mirror in a room. Even though Mary stands behind Tom but Tom can still see her clearly. 

Which one of the following statements explains how Tom is able to see Mary?

1. Mary reflects light from the lamp into Tom's eyes.
2. The mirror gives off light which travels into Tom'e eyes.
3. The light reflected by Mary is reflected by the mirror into Tom's eyes.
4. The light given off by Mary is reflected by the mirror into Tom's eyes.

3

200

Look at the diagram below.

 

 

 

Why is Jack able to see the ball?

 

1. The ball gives off light which is reflected into Jack's eyes.

2. Jack's eyes give off light which reflects off the ball and into Jack's eyes.
3. Lights from the surroundings is reflected off the ball and into Jack's eyes.
4. Light from the surroundings is reflected off Jack's eyes and onto the ball.

C

300

The object in the triangular sharp is called

Prism

2

100

The functions of the blood in our body are to ____________________.

 

A: keep the lungs breathing

B: produce oxygen for the body

C: transport waste materials in the body

D: carry nutrients from the small intestine to all parts of the body

a and b

200

What are the colours of the spectrum?

Red, orange, yellow, green, blue, indigo and violet

300

When light hits a prism it refracted 7 colours of light . this is called

Spectrum of light

3

100

Which one of the following is NOT a light source?

mirror

200

This diagram shows an example of 

A. reflection B refraction C inversion D opaque

a

4

100

The diagram below shows a girl reading a book.

Which one of the following diagrams shows why the girl can read the book on the table?

a.  b. c. 

d.

D

200

Which of the following is a natural source of light? A mirror B star C television D all of these

B