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Light and Shadow - 1 Class 6 Worksheet Science

Q1: Multiple Choice Questions (MCQs).


(i) Which of the following is a source of light?
(a) Chair
(b) Sun
(c) Moon
(d) Table
Ans:
(b)
The sun is a source of light, while a chair, moon, and table are not.

(ii) Which of these is not a transparent object?
(a) Glass
(b) Air
(c) Wood
(d) Water

Ans: (c)
Wood is an opaque object, which does not allow light to pass through it. Glass, air, and water are transparent objects, which allow light to pass through them.

(iii) What do we call the dark area formed by an opaque object when light falls on it?
(a) Reflection
(b) Shadow
(c) Refraction
(d) Lens

Ans: (b)
A shadow is the dark area formed by an opaque object when light falls on it. Reflection, refraction, and lens are not related to the formation of shadows.

(iv) Which of the following is a natural source of light?
(a) Torch
(b) Candle
(c) Fireflies
(d) Electric bulb

Ans: (c)
Fireflies are a natural source of light because they produce their own light. A torch, candle, and electric bulb are artificial sources of light.

(v) Which of the following materials allows light to pass through it?
(a) Opaque
(b) Transparent
(c) Translucent
(d) Reflective

Ans: (b)
Transparent materials allow light to pass through them, while opaque materials do not allow light to pass through them, and translucent materials allow only some light to pass through them.
Light and Shadow - 1 Class 6 Worksheet Science

Q2: Fill in the blanks.

(i) Light travels in a straight line called a __________.
Ans: Light travels in a straight line called a ray.

(ii) When an object blocks light, it forms a __________.
Ans: When an object blocks light, it forms a shadow.

(iii) The size of the shadow depends on the __________ of the light source.
Ans: The size of the shadow depends on the angle  of the light source.

(iv) Shadows are longest during the __________.
Ans: Shadows are longest during the morning and evening.

(v) Transparent materials allow __________ to pass through them.
Ans: Transparent materials allow light to pass through them.
Light and Shadow - 1 Class 6 Worksheet Science

Q3: Match the column.

Light and Shadow - 1 Class 6 Worksheet Science

Ans: (i) Transparent - (c) Allows light to pass through
(ii) Translucent - (d) Allows some light to pass through
(iii) Opaque - (a) Does not allow light to pass through
(iv) Reflection - (b) Changes the direction of light
(v) Refraction - (e) Bends light

Q4: True or False.

(i) Shadows are formed when light is blocked by an object.
Ans: True
When an object blocks the light from a light source, it creates a shadow.

(ii) The size of the shadow depends on the distance of the object from the light source.
Ans: True
As the distance between the object and the light source increases, the size of the shadow decreases.

(iii) Transparent materials do not allow light to pass through them.
Ans: False
Transparent materials allow light to pass through them without scattering it.

(iv) Mirrors are an example of a reflective surface.
Ans: True
Mirrors are made of a glass surface with a reflective coating that reflects light.

(v) Shadows can change shape and size throughout the day.
Ans: True
Shadows change shape and size as the angle of the light source changes, which happens throughout the day as the sun moves across the sky.

Q5: Short Answer Questions.


(i) What is light?
Ans: Light is a form of energy that allows us to see objects around us. It travels in a straight line and can be reflected or refracted.

(ii) Name two sources of light.
Ans: Two sources of light are the sun (natural source) and a torch (artificial source).

(iii) What are the three types of materials based on their interaction with light?
Ans: The three types of materials based on their interaction with light are transparent, translucent, and opaque.

(iv) Explain the difference between transparent, translucent, and opaque objects.
Ans: Transparent objects allow light to pass through them, so we can see through them clearly. Translucent objects allow some light to pass through them, but not enough to see through them clearly. Opaque objects do not allow any light to pass through them, so we cannot see through them at all.

(v) How are shadows formed?
Ans: Shadows are formed when an opaque object blocks the path of light. The dark area behind the object, where the light is blocked, is called the shadow.
Light and Shadow - 1 Class 6 Worksheet Science

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FAQs on Light and Shadow - 1 Class 6 Worksheet Science

1. What is light and shadow?
Ans. Light refers to the electromagnetic radiation that is visible to the human eye, while a shadow is a dark area or shape produced by an object blocking light.
2. How does light create shadows?
Ans. When light rays from a source hit an object, they cannot pass through it. Instead, they are either absorbed or reflected. The area behind the object where the light cannot reach is called a shadow.
3. What factors affect the size and shape of a shadow?
Ans. The size and shape of a shadow depend on the following factors: - The distance between the object and the light source: The closer the object is to the light source, the larger the shadow. - The size of the object: A larger object will create a larger shadow. - The angle at which the light hits the object: Different angles of light can produce different shapes of shadows.
4. Why do shadows change throughout the day?
Ans. Shadows change throughout the day due to the movement of the sun. As the position of the sun changes, the angle at which the sunlight hits objects also changes. This results in shadows appearing longer or shorter and changing direction throughout the day.
5. How can we manipulate shadows?
Ans. Shadows can be manipulated by changing the position of the light source or the object blocking the light. By moving the light source closer or farther away, or by changing the angle of the light, the size, shape, and direction of the shadow can be altered.
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