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NCERT Solutions for Class 6 Science - Light Shadow and Reflections

Q1. Rearrange the boxes given below to make a sentence that helps us understand opaque objects
NCERT Solutions for Class 6 Science - Light Shadow and Reflections
Ans: The given boxes can be rearranged to form ‘Opaque Objects Make Shadows’ as shown below

NCERT Solutions for Class 6 Science - Light Shadow and Reflections


Q2. Classify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous:
Air, water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, a sheet of polythene, a CD, smoke, a sheet of plane glass, fog, a piece of red hot iron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper, the flame of a gas burner, a sheet of cardboard, a lighted torch, a sheet of cellophane, a wire mesh, kerosene stove, sun, firefly, moon.
Ans: 

Opaque: A piece of rock, a sheet of aluminium, a mirror, a wooden board, a CD, a piece of red hot iron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper, the flame of a gas burner, a sheet of cardboard, a lighted torch, kerosene stove, sun, firefly, moon.
Transparent: Air, water, a sheet of plane glass.
Translucent: A sheet of polythene, smoke, fog, a sheet of cellophane, a wire mesh.

NCERT Solutions for Class 6 Science - Light Shadow and Reflections

Luminous: A piece of red hot iron, a lighted fluorescent tube, the flame of a gas burner, a lighted torch, sun, firefly.
Non – luminous: Air, water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, a sheet of polythene, a CD, smoke, a sheet of plane glass, fog, an umbrella, a wall, a sheet of carbon paper, a sheet of cardboard, a sheet of cellophane, a wire mesh, kerosene stove, moon.


Q3. Can you think of creating a shape that would give a circular shadow if held in one way and a rectangular shadow if held in another way?
Ans: Yes, there are many things which give a circular shadow if held in one way and a rectangular shadow if held in another way. For example: a cylinder, a circular disc etc. 

Getting circular shadow with a cylinder Getting circular shadow with a cylinder 

Getting a rectangular shadow with a cylinderGetting a rectangular shadow with a cylinderQ4. In a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror?
Ans: No, in a dark room, a mirror reflection of the image will not be shown as the light will not fall on the mirror to reflect the image due to darkness.

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FAQs on NCERT Solutions for Class 6 Science - Light Shadow and Reflections

1. What is a shadow?
Ans. A shadow is a dark area or shape produced by an object coming between rays of light and a surface.
2. How is a shadow formed?
Ans. A shadow is formed when light is blocked by an object, creating a dark area behind it where light cannot reach.
3. What is the difference between a transparent, translucent, and opaque object in terms of light and shadows?
Ans. A transparent object allows light to pass through completely, creating a clear shadow. A translucent object allows some light to pass through, creating a blurry shadow. An opaque object blocks all light, creating a solid shadow.
4. How can the size of a shadow be changed?
Ans. The size of a shadow can be changed by altering the position of the object relative to the light source. Moving the object closer to the light source will make the shadow smaller, while moving it farther away will make the shadow larger.
5. Why do shadows change throughout the day?
Ans. Shadows change throughout the day due to the changing position of the sun in the sky. As the sun moves across the sky, the angle of light hitting objects changes, causing shadows to shift in direction and length.
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