The Ultimate Quiz On Light!
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. SunExplanation
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.Rate this question:
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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. CandlesExplanation
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.Rate this question:
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- 3.
The thin wire contained within a light globe is called a 'filament.'
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
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.Rate this question:
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- 4.
A ______________ is formed when an obstacle blocks the passage of light.
Correct Answer
shadowExplanation
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.Rate this question:
- 5.
Light is a form of
- A.
Sound
- B.
Light
- C.
Fire
- D.
Energy
Correct Answer
D. EnergyExplanation
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.Rate this question:
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- 6.
A sharp, clear, and complete shadow is called an umbra.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
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.Rate this question:
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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. WavelengthExplanation
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.Rate this question:
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- 8.
A penumbra shadow is clear and sharp.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
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.Rate this question:
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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. CameraExplanation
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.Rate this question:
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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. StarsExplanation
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.Rate this question:
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Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
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Current Version
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Sep 14, 2023Quiz Edited by
ProProfs Editorial Team -
Sep 22, 2016Quiz Created by
MissWarren
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