Write True if the statement is correct. If false, change the underlined word to make the statement correct.
1. Dispersion of light refers to the separation of white light into its component colors. [Underlined: Dispersion]
2. Visible light refers to the light that is visible to the human eye. [Underlined: Visible Light]
3. Visible light is a combination of all the visible colors of light.
[Underlined: Visible Light]
4. The reflected color of a blue ball is red. [Underlined: Red]
5. A prism is a transparent object that disperses white light into different colors. [Underlined: Prism]
6. Reflection of sound is also called echo. [Echo]
7. If there are/is one reflected sound/s, reverberation takes place. [Underlined: One]
8. Echodetermination is the use of reflected sound to locate an object. [Underlined: Echodetermination]
9. Sound is a wave. [Underlined: Wave]
10. Sound is produced by a vibration. [Underlined: Vibration]
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1. TRUE
red, orange, yellow, green, blue and violet. The separation of visible light into its different colors is known as dispersion.
2. TRUE
visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view.
3. FALSE-
White Light is a combination of all colors in the color spectrum. It has all the colors of the rainbow. Combining primary colors of light like red, blue, and green creates secondary colors: yellow, cyan, and magenta.
4. TRUE
blue racquetball appears blue because it reflects blue wavelengths of light and absorbs all others (red and green).
5. TRUE
passage through the prism, the white light is separated into its component colors - red, orange, yellow, green, blue and violet.
6. TRUE
The sound heard after reflections from a rigid surface such as a cliff or a wall is called an echo
7. TRUE
when the reflected sound wave reaches your ear in less than 0.1 second after the original sound wave.
8. TRUE
Echolocation is a technique of locating objects by reflected sound, in particular, those used by animals such as dolphins and bats.
9. TRUE
sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid.
10. TRUE
Sound is produced by vibrating objects. As the object vibrates, it sets motion in the neighbouring molecules. This disturbance then travels through the medium. When it reaches our ears, we hear it as sound.
Explanation:
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