1. What do you call and object which no light can pass through?
A. transparent B. opaque
C. translucent D. All of the objects

2. Which of the following materials is opaque?
A. wood B. cardboard C. black paper D. All of the above

3. When are shadow formed?
A. When the rays hit an opaque object B. When light rays hit transparent objects C. when light rays hit hard objects
D. None of the above

4. Why do opaque objects form shadows?
A. Because they absorb the light that hit them B. Because they reflect the light
C. Because they block the light that hits them D. All of the above

5. At ______, the length of the shadow is the shortest.
A. 8 A.M. B. Noon C. 5 P.M. D. Early in the morning.


6. A shadow is longest_____.
A. At midday B. In the evening C. In the morning
D. In the morning and the evening.


7. A dark shape that appear when something moves between the surface and a source of light is a_______.
A. tide B. shadow C. season D. light.

8. The shadow for the light post at 7 a.m. would be pointing in which direction?
A. north B. east C. south D. west.

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