CBSE Class 8 Science The Invisible Living World: Beyond Our Naked Eye (Class 8 NCERT New) Quiz 26

1. Jasmine constructed the diagram to represent how Earth fits into other structures that make up our universe. Which of the following should Jasmine write on the line to best complete her diagram?

A asteroid belt B Mars C Milky Way D Proxima Centauri

2. The diagram demonstrates how a magnifying lens can make a penny appear larger. What property of the magnifying lens is most responsible for allowing it to magnify the penny?

A It can reflect light. B It can refract light. C It can increase the intensity of light. D It can increase the wavelength of light.

3. Sunlight is composed of energy that is visible to humans and energy that is not visible to humans. Which statement describes how the visible energy from the Sun is different from the nonvisible energy?

A It travels at a different speed through space. B It travels a different distance through space. C It has different wavelengths. D It has different amplitudes.

4. Light travels in the form of waves. The diagram below shows the path of a light wave moving from medium A to medium B. Which of the following occurs when the light wave enters medium B?

A The light wave stops moving. B The light wave's speed changes. C The light wave does not change. D The light wave changes to a sound wave.

5. Yellow light and blue light are two examples of electromagnetic radiation from the sun. Which statement correctly compares yellow light and blue light?

A They travel at different speeds. B They have the same wavelength. C They are both types of visible light. D They are both types of ultraviolet light.

6. Farsighted people wear eyeglasses that contain convex lenses. The diagram shows light passing through a convex lens. Which of these processes is represented in the diagram?

A absorption B reflection C refraction D transformation

7. Sound waves travel at different speeds through different materials. Through which of the following materials do sound waves travel fastest?

A air B milk C water D wood

8. Energy travels through space as electromagnetic energy, which includes a range of types. Which type of electromagnetic energy is made up of a spectrum of manydifferent colors?

A ultraviolet light B infrared light C visible light D X-rays

9. The illustration shows what happens when light is passed through a prism. What type of light passed through the prism?

A white light B yellow light C infrared light D ultraviolet light

10. How is ultraviolet light different from the light emitted by a flashlight?

A Ultraviolet light is brighter than the light from a flashlight. B Only light from a flashlight can travel through a vacuum. C Ultraviolet light has a longer wavelength than the light from a flashlight. D Ultraviolet light is invisible to the human eye.