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Quick Revision: Light Video Lecture | Science Class 7

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FAQs on Quick Revision: Light Video Lecture - Science Class 7

1. What is light?
Ans. Light is a form of electromagnetic radiation that is visible to the human eye. It consists of particles called photons that travel in waves.
2. How does light travel?
Ans. Light travels in a straight line until it is reflected, refracted, or absorbed by an object. It can travel through a vacuum, air, or transparent materials such as glass.
3. What are the different colors of light?
Ans. Light is made up of a spectrum of colors, including red, orange, yellow, green, blue, indigo, and violet. These colors are a result of the different wavelengths of light.
4. How does light interact with different materials?
Ans. Light can be absorbed, reflected, or refracted when it interacts with different materials. The behavior of light depends on the properties of the material it encounters.
5. How is light used in our daily lives?
Ans. Light is used for various purposes in our daily lives, such as lighting up our homes, powering electronic devices, and enabling communication through optical fibers.
111 videos|246 docs|28 tests
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