(i) What is a shadow?
(a) A colorful drawing
(b) A dark area made when an object blocks light
(c) A type of light
(d) A shadow puppet show
Ans: (b)
A shadow is a dark area that is formed when an object blocks light. This is the correct answer because it describes what a shadow is.
(ii) How is a shadow created?
(a) By turning on a flashlight
(b) By covering an object with paper
(c) By blocking light from a source with an object
(d) By making a loud noise
Ans: (c)
Shadows are created when an object blocks light from a source like the sun or a flashlight.
(iii) Which of these objects will not cast a shadow?
(a) A book
(b) A glass of water
(c) A teddy bear
(d) A lamp
Ans: (b)
A glass of water is transparent, which means light can pass through it without creating a shadow. The other objects are opaque and can cast shadows.
(iv) What happens to a shadow when you move the object closer to the light source?
(a) The shadow becomes smaller
(b) The shadow becomes bigger
(c) The shadow disappears
(d) The shadow stays the same size
Ans: (a)
When you move an object closer to the light source, the shadow it casts becomes smaller.
(v) Which of these is a source of light?
(a) A chair
(b) The moon
(c) A flashlight
(d) A backpack
Ans: (c)
A flashlight emits light and is a source of light. The other options are not sources of light.
(i) Shadows are formed when an object blocks ___________.
Ans: light
Shadows are created when an object blocks the path of light.
(ii) When you move an object closer to the light source, the shadow becomes ____________.
Ans: smaller
When you bring an object closer to the light source, the shadow it casts becomes smaller in size.
(iii) A glass of water is ___________, so it doesn't cast a shadow.
Ans: transparent
Glass is transparent, meaning light can pass through it, and it doesn't create a shadow.
(iv) You can make shadow ____________ by using your hands to shape them.
Ans: puppets
You can use your hands to make shadow puppets by shaping them in different ways to create different shadow shapes.
(v) Shadows are usually ____________ than the objects that create them.
Ans: darker
Shadows are typically darker than the objects that cast them because they block the light.
(i) What is a shadow?
Ans: A shadow is a dark area that forms on the ground or a surface when an object blocks light.
(ii) Can you name one source of light during the daytime?
Ans: The Sun is a source of light during the daytime.
(iii) How does the size of a shadow change when you move closer to a light source?
Ans: The size of a shadow gets smaller when you move closer to a light source.
(iv) What do we see in the night sky that gives us light?
Ans: We see the Moon in the night sky that gives us light.
(v) Name one material that lets light pass through it.
Ans: Plastic is one material that lets light pass through it.
13 videos|80 docs|24 tests
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1. What is light? |
2. How does light travel? |
3. What is a shadow? |
4. How is a shadow formed? |
5. What is the difference between a transparent and an opaque object? |
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