The Ultimate Quiz On Light!

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| By MissWarren

MissWarren

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Quizzes Created: 1 | Total Attempts: 4,162

Questions: 11 | Attempts: 4,162 | Updated: Sep 14, 2023

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Light is electromagnetic radiation. Play this informative quiz on sources of light and see what you know about light, its functionality, and its features. This quiz contains a wide range of questions about light ranging from easy, medium, to hard levels. Do you know what Umbra is? What is the source of artificial light? What is the source of natural light? This quiz has answers to all that and much more. If you like this quiz, share it with your friends.

Questions and Answers

1.

What is our main source of light?
- A.
  
  Sun
- B.
  
  Fire
- C.
  
  Light
- D.
  
  Candles
Correct Answer
A. Sun

Explanation
The sun is our main source of light because it emits light and heat through a process called nuclear fusion. It is a massive ball of gas that produces energy in its core, which is then radiated as light and heat. This light from the sun reaches the Earth and provides us with daylight, allowing us to see and carry out our daily activities.

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2.

What artificial light was created thousands of years ago?
- A.
  
  Fire
- B.
  
  Candles
- C.
  
  Light globes
- D.
  
  LEDs
Correct Answer
B. Candles

Explanation
Candles were created thousands of years ago as a source of artificial light. Before the invention of electricity, people used candles made from various materials, such as beeswax or tallow, to illuminate their surroundings. Candles provided a portable and convenient way to have light in the absence of natural light sources. They were widely used in households, temples, and other places where light was needed. Candles played a crucial role in human history, providing light for various activities and contributing to the development of society.

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2
1
3.

The thin wire contained within a light globe is called a 'filament.'
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The thin wire contained within a light globe is called a filament. This is true because a filament is a wire or thread-like structure that is heated by an electric current to produce light in an incandescent light bulb. It is made of a material with a high melting point, such as tungsten, which allows it to withstand the high temperatures generated when electricity passes through it.

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4.

A ______________ is formed when an obstacle blocks the passage of light.

Correct Answer
shadow

Explanation
When an obstacle blocks the passage of light, it creates an area of darkness behind it, which is known as a shadow. Shadows are formed because light cannot pass through the obstacle, causing a lack of illumination in that specific area. This phenomenon occurs when an object or person blocks the path of light, resulting in the formation of a shadow.

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5.

Light is a form of
- A.
  
  Sound
- B.
  
  Light
- C.
  
  Fire
- D.
  
  Energy
Correct Answer
D. Energy

Explanation
Light is a form of energy because it consists of particles called photons that carry energy. When light interacts with matter, it can transfer its energy, causing various effects such as heating, chemical reactions, or the stimulation of visual receptors in our eyes. Light can be produced by different sources, such as the sun, fire, or artificial light sources, and it travels in the form of electromagnetic waves. Therefore, the correct answer is energy.

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6.

A sharp, clear, and complete shadow is called an umbra.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
A sharp, clear, and complete shadow is called an umbra. This statement is true because an umbra refers to the darkest part of a shadow where all light is blocked, resulting in a distinct and well-defined shadow. The term "umbra" is commonly used in astronomy to describe the central region of a shadow during an eclipse.

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7.

What do you call the distance between one crest of the wave to the crest of the next?
- A.
  
  Frequency
- B.
  
  Wavelength
- C.
  
  Penumbra
- D.
  
  Refraction
Correct Answer
B. Wavelength

Explanation
The distance between one crest of a wave to the crest of the next is called the wavelength. Wavelength is a fundamental property of waves, representing the spatial period of the wave. It is commonly measured in units such as meters or nanometers, depending on the type of wave. In the context of electromagnetic waves, such as light or radio waves, wavelength determines the color or frequency of the wave.

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8.

A penumbra shadow is clear and sharp.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
A penumbra shadow is not clear and sharp, but rather it is a partially shaded area with some degree of fuzziness or blurriness. This is because a penumbra is formed when only a portion of the light source is blocked, resulting in a partial shadow that has a softer edge compared to the more defined and darker umbra shadow. Therefore, the statement that a penumbra shadow is clear and sharp is incorrect.

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9.

Select the sources of artificial light.
- A.
  
  Light globe
- B.
  
  Streetlight
- C.
  
  Sun
- D.
  
  Candle
- E.
  
  Fire
- F.
  
  Laser
- G.
  
  Camera
Correct Answer(s)
A. Light globe
B. Streetlight
D. Candle
F. Laser
G. Camera

Explanation
The sources of artificial light listed in the answer are light globe, streetlight, candle, laser, and camera. These are all examples of devices or objects that produce light artificially. A light globe is a common type of light bulb used in households. Streetlights are outdoor lights used to illuminate roads and public areas. Candles produce light through the combustion of wax or similar materials. Lasers emit a concentrated beam of light through stimulated emission. Cameras often have a built-in flash that produces artificial light for photography purposes.

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10.

Select the sources of natural light.
- A.
  
  Sun
- B.
  
  Fire
- C.
  
  Candles
- D.
  
  Stars
- E.
  
  Moon
Correct Answer(s)
A. Sun
B. Fire
D. Stars

Explanation
The sources of natural light mentioned in the given options are the Sun, Fire, and Stars. The Sun is the primary source of natural light, providing sunlight during the day. Fire produces light through combustion, making it another source of natural light. Stars, although located far away from Earth, emit their own light and can be considered as sources of natural light. Candles and the Moon are not mentioned as sources of natural light in the given options.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

Current Version
Sep 14, 2023

Quiz Edited by
ProProfs Editorial Team
Sep 22, 2016

Quiz Created by
MissWarren

The Ultimate Quiz On Light!

What is our main source of light?

What artificial light was created thousands of years ago?

The thin wire contained within a light globe is called a 'filament.'

A ______________ is formed when an obstacle blocks the passage of light.

Light is a form of

A sharp, clear, and complete shadow is called an umbra.

What do you call the distance between one crest of the wave to the crest of the next?

A penumbra shadow is clear and sharp.

Select the sources of artificial light.

Select the sources of natural light.