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Grade 4, Stage 5, Unit 4, Check Your Progress
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Is this diagram correct? Why or Why not?
No, the two angles are not the same.
A mirror used by dentists to see through the back of our teeth.
 
Dentist's Mirror
 
Periscope
 
Rear view Mirror
A mirror used to avoid accidents when travelling through a curved road.
 
Safety Mirror
 
Security Mirror
 
Rear view Mirror
Different surfaces reflect light at different rates.
 
True
 
False
Identify how light travels in a periscope that makes the boy see the bird above him.
Sun - Bird - Mirror 1 - Mirror 2 - Boy's eyes
Identify how light travels that makes the boy to see the cupcake.
The light from the candle travels to the cupcake. The cupcake reflects the light to the boy's eyes.
Identify how light travels that makes the boy to see the chair.
The light from the bulb travels to the chair. The chair reflects the light to the boy's eyes.
Identify how light travels that makes the girl see the sun.
The light from the sun travels to the girl's eyes.
Identify the ray.
 
Reflected ray
 
Incoming light ray
Identify the ray.
 
Incoming light ray
 
Reflected ray
It is the process where light is bounced off from a surface, changing its direction.
Reflection
A ray that bounces off a surface is called...
 
Reflected ray
 
Incoming light ray
A ray that hits a surface is called...
 
Incoming light ray
 
Reflected ray
A mirror used to look after everyone that enters a shop.
 
Security Mirror
 
Safety Mirror
 
Rear view Mirror
Which of the following is the best at reflecting light?
 
Mirror
 
Rock
 
Paper
Our left side can be seen on the right side of the mirror, and our right side can be seen on the left side of the mirror. This is because the image projected from the mirror are...
 
Inverted
 
Reverted
 
Diverted
Surfaces that are better at reflecting light...
 
Smooth
 
Rough
Surfaces that are better at absorbing light are...
 
Rough
 
Smooth
Name the instrument.
Periscope
Objects that make light bounce off are called...
Reflectors
Objects that make their own light are called ...
Light Sources
A band of light is called a ...
Beam
Which of the following is NOT a light source?
 
Moon
 
Sun
 
Stars
Which of the following is a light source?
 
Sun
 
Moon
 
Clouds
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