World Book Trivia Quiz For Kids---light-australia
- 1.
What colour are the shortest light waves we can see?
- A.
Violet
- B.
Red
- C.
Green
Correct Answer
A. VioletExplanation
The violet waves are the shortest waves we can see, and red waves are the longest.Rate this question:
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- 2.
What are light waves called that are too long to be seen called?
- A.
Ultraviolet
- B.
Infrared
- C.
Invisible
Correct Answer
B. InfraredExplanation
Waves too short to be seen are called ultraviolet rays. They cause sunburn and suntan. Waves too long to be seen are called infrared rays. They cause the warming we feel in sunlight.Rate this question:
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- 3.
Which type of light bulb uses a filament?
- A.
Fluorescent
- B.
Incandescent
Correct Answer
B. IncandescentExplanation
One kind of light bulb is an incandescent bulb. It passes electricity through a metal wire called a filament. The filament heats up and glows. It sits inside a glass bulb. Fluorescent bulbs pass electricity through special gases in a glass tube. The gas gives off energy. The energy is invisible. But it makes a coating on the glass glow brightly.Rate this question:
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- 4.
Electric power is measured in what type of unit?
- A.
Mph
- B.
Watts
- C.
Inches
Correct Answer
B. WattsExplanation
Electric power is measured in units called watts. For example, it takes 100 watts of electric power to operate a 100-watt light bulb. The world's power plants produce billions of watts at any given time.Rate this question:
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- 5.
When did gas lamps become popular?
- A.
1600's
- B.
1800's
- C.
2000's
Correct Answer
B. 1800'sExplanation
Gas lamps were used in the 1800's. The gas was piped into the lamp. It burned as it rushed out of a small opening and mixed with the air. Today, gas lamps are sometimes used by campers. Such lamps provide light in places with no electric power.Rate this question:
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- 6.
Which of the following can a prism NOT do?
- A.
Change direction of light
- B.
Break up light into colours of the rainbow
- C.
Block light from coming through
Correct Answer
C. Block light from coming throughExplanation
A prism is a thick, three-sided piece of glass or a kind of rock called quartz. It can change the direction of light. It can also break light up into the colours of the rainbow.Rate this question:
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- 7.
Why do rainbows appear?
- A.
Sunlight shines on raindrops
- B.
Leprechauns create them
- C.
Sunlight reflects off clouds
Correct Answer
A. Sunlight shines on raindropsExplanation
Rainbows are curved bands of coloured light that appear in the sky. We see rainbows when the sun shines on raindrops. Sometimes both ends of the rainbow seem to touch the ground.Rate this question:
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- 8.
A light-year is the distance that light travels in one year.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
A light-year is the distance that light travels in one year. The light-year is used by scientists called astronomers. They use the light-year to describe the huge distances between stars, galaxies, and other objects in space.Rate this question:
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- 9.
The speed of light in empty space is always the same.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Scientists measure the wavelength, brightness, and speed of light. The speed of light in empty space is always the same. In space, light travels at 186,282 miles (299,792 kilometers) per second.Rate this question:
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- 10.
All light comes from atoms.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Some light, such as sunlight, comes from nature. Other light comes from things people make, such as lamps. But all light comes from atoms , tiny particles of matter that make up everything in the universe.Rate this question:
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Mar 20, 2022Quiz Edited by
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Nov 27, 2012Quiz Created by
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