Light and Shadows
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
To see a shadow clearly, we usually need light to hit a ____ surface like a wall or floor.
A.Dark
B.Solid
C.Liquid
D.Invisible
- 2.
Which of these is a property of a shadow?
A.It has mass
B.It has the same color as the object
C.It is 2D and flat
D.It can speak
- 3.
What will happen to the shadow of a stick if the Sun gets lower in the sky?
A.The shadow will get shorter
B.The shadow will get longer
C.The shadow will disappear
D.The shadow will stay the same
- 4.
A material that blocks most light but lets a little through is...
A.Translucent
B.Transparent
C.Opaque
D.Clear
- 5.
What happens to your shadow as the sun sets in the evening?
A.It gets shorter
B.It gets longer
C.It stays the same
D.It disappears before the sun goes down
- 6.
In an experiment, if you move the light source further from the object, the shadow becomes...
A.Larger and clearer
B.Smaller and clearer
C.Larger and blurrier
D.Smaller and blurrier
- 7.
Which material is used to make shadows in a shadow puppet theatre?
A.Clear glass
B.Opaque card
C.Water
D.Air
- 8.
What is the main reason we cannot see shadows in a room that is completely pitch black?
A.The objects have disappeared
B.There is no light source to be blocked
C.The shadows are also black and blend in
D.The surface is too dark
- 9.
A student draws a diagram of a shadow. The light is at the top left, the object is in the middle. Where should the shadow be?
A.Bottom right
B.Top right
C.Bottom left
D.Directly above the object
- 10.
Which of these is a natural source of light that causes shadows on Earth?
A."The Moon"
B."The Sun"
C."A Mirror"
D."The Clouds"
Download the worksheet for Light and Shadows - Shadows to practice offline. It includes additional chapter-level practice questions.
changing Shadows
Subtopicchanging Shadows under Light and Shadows for Grade 3 IGCSE.
Preview questions (no answers)
- 1.
Shadows always point ______ the light source.
A.Towards
B.Away from
C.Above
D.Inside
- 2.
The Sun appears to move from ______ to ______ across the sky.
A.North, South
B.East, West
C.West, East
D.Top, Bottom
- 3.
Which of these can change the size of a shadow?
A.Moving the light source
B.Painting the object a different color
C.Changing the room temperature
D.Making the room quieter
- 4.
An object that lets some light through but scatters it is called ______.
A.Transparent
B.Opaque
C.Translucent
D.Invisible
- 5.
How does the distance between an object and the light source affect the shadow's size?
A.Closer = Smaller
B.Closer = Larger
C.Further = Larger
D.Distance does not affect size
- 6.
Why do shadows have fuzzy edges when the light source is far away?
A.Light is bending around the object
B.The light source is not a single point
C.The object is vibrating
D.The screen is moving
- 7.
If a square object is held at an angle to the light, its shadow might look like a...
A.Perfect circle
B.Diamond or rectangle
C.Triangle
D.Star
- 8.
Which statement about light and shadows is FALSE?
A.Light can bend around corners to remove shadows.
B.Shadows are the absence of light.
C.The size of a shadow depends on distances.
D.Opaque objects make the darkest shadows.
- 9.
How would the shadow of a donut (a ring with a hole) look if the light shines through the middle?
A.A dark circle with a bright spot in the middle.
B.A solid dark circle.
C.A bright circle with a dark spot in the middle.
D.Two separate rectangular shadows.
- 10.
If you are drawing the shadow of a tree at 4:00 PM, where should you draw the Sun in your picture relative to the tree?
A.Low in the sky on the side opposite the shadow.
B.High in the sky directly above the tree.
C.In front of the shadow.
D.Behind the tree where it cannot be seen.
Download the worksheet for Light and Shadows - changing Shadows to practice offline. It includes additional chapter-level practice questions.
Transparent Material
SubtopicTransparent Material under Light and Shadows for Grade 3 IGCSE.
Preview questions (no answers)
- 1.
In the following list, which material is transparent?
A.Cellophane wrap
B.Plywood
C.Concrete
D.Steel plate
- 2.
Which of these objects would allow you to see the color of a ball placed behind it?
A.A wooden board
B.A metal sheet
C.A clear plastic sheet
D.A piece of cardboard
- 3.
A glass window is called transparent because ________.
A.It is hard
B.It lets light pass through
C.It is made of sand
D.It can break
- 4.
Which of these is a transparent liquid?
A.Milk
B.Orange juice
C.Clean water
D.Black ink
- 5.
Why is a shadow from a transparent object usually 'missing' or very hard to see?
A.Because the object is invisible
B.Because the object lets almost all light through to the surface behind it
C.Because transparent objects only work in the dark
D.Because light doesn't hit transparent objects
- 6.
If you shine a red light through a transparent glass, the light on the other side will be:
A.Black
B.Red
C.Invisible
D.White
- 7.
Which of these items would you find in a science lab that is transparent?
A.A wooden stool
B.A glass beaker
C.A black lab coat
D.A metal sink
- 8.
Which of these materials would you use if you wanted to make a window that lets in light but keeps people from seeing in clearly?
A.Transparent glass
B.Translucent frosted glass
C.Opaque wood
D.Reflective steel
- 9.
A shadow is created when light is blocked. If a material is 100% transparent and does not block any light, will it have a shadow?
A.Yes, it will have a very dark shadow
B.No, it will not have a shadow
C.Yes, it will have a shadow larger than itself
D.It will have a shadow only at night
- 10.
Why is it important for the screen of a smartphone to be transparent?
A.To protect the phone from breaking
B.So the light from the display can reach your eyes
C.To make the phone feel smooth
D.To reflect your face like a mirror
Download the worksheet for Light and Shadows - Transparent Material to practice offline. It includes additional chapter-level practice questions.
Transclucent Material
SubtopicTransclucent Material under Light and Shadows for Grade 3 IGCSE.
Preview questions (no answers)
- 1.
Which type of material is translucent?
A.A material that allows light through but not a clear image
B.A material that allows a clear image
C.A material that blocks light
D.A material that glows in the dark
- 2.
Which of these objects is MOST likely to be translucent?
A.A textbook
B.A thin piece of white cloth
C.A metal coin
D.A rubber tire
- 3.
Looking through a piece of bubble wrap is looking through a ______ material.
A.Transparent
B.Translucent
C.Opaque
D.Magnetic
- 4.
Which material is used for the cover of a standard flashlight to protect the bulb but let light out?
A.Transparent plastic
B.Opaque metal
C.Translucent frosted glass
D.Wood
- 5.
Which type of material would you use to make a window for a house if you want to see the trees outside clearly?
A.Translucent
B.Opaque
C.Transparent
D.Scattered
- 6.
Which of these would be most translucent in a bright room?
A.A thin plastic ruler
B.A thick textbook
C.A metal desk
D.A wool rug
- 7.
When a material is 'partially transparent', it is actually called:
A.Opaque
B.Translucent
C.Reflective
D.Dense
- 8.
Why is it important to know if a material is translucent when designing a lamp?
A.To know how much the lamp will weigh
B.To know if the lamp will be able to stand up
C.To know how the light will spread and how bright it will be
D.To know what color the light bulb should be
- 9.
If you wanted to create a 'glow' effect for a toy ghost, what material would be best to use?
A.Transparent clear wrap
B.Translucent white plastic
C.Opaque black cardboard
D.Shiny silver foil
- 10.
Which of these objects would produce the (least dark) shadow?
A.A thick textbook
B.A single sheet of thin wax paper
C.A metal spoon
D.A ceramic mug
Download the worksheet for Light and Shadows - Transclucent Material to practice offline. It includes additional chapter-level practice questions.