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Reflection 1

In this worksheet, students will be helped to consolidate their understanding of how light is reflected and gives them the opportunity to explore how light rays will behave in different situations.

'Reflection 1' worksheet

Key stage:  KS 2

Curriculum topic:  Light

Curriculum subtopic:  Light Travels in Straight Lines

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

Eye

 

How do we see things? Is it simply us looking or is there more to it than that? What part do light rays play?

 

Let's have a look....!

Objects that produce light are known as LUMINOUS SOURCES.

 

Click each of the following that you think is a luminous source:

candle

sun

moon

star

torch

fire

lamp

cat's eyes in road

Some objects don't produce their own light but are very good at reflecting light.

 

Tick each of the following that you think are good reflectors:

lamp

polished table

metal knife

the sea

rusty key

shiny black shoes

window

Amy and Sam were camping. They are about to light the fire.

 

Camp fire

 

"Oh no!" exclaimed Amy. "I've forgotten the matches!"

Sam wondered: "The Sun's hot today - can the Sun help us to light the fire?"

"Brilliant!" cheered Amy, "I'll get the aluminium foil - that's good at reflecting the Sun's rays. We can start a fire with that."

 

Which of the following do you think would be the best way for Amy to use the aluminium foil in order to reflect the Sun's rays to start the fire?

scrumple it up so there are more edges to reflect heat

spread it out as smooth and flat as possible

spread butter over it to make it shiny

What do you think is happening when light bounces off an object to your eyes?

it's being reflected

it's being bent

it's being absorbed

Which of these objects reflects the most light?

wooden spoon

silver spoon

plastic measuring spoon

Which of these objects reflects the most light?

the sea

flowing river

calm lake

Which one of these objects would you use to see around a corner?

microscope

telescope

periscope

Frank is out for a walk. On his walk he sees a fine cedar tree.

 

Which of these drawings shows correctly the way that Frank is able to see the tree.

 

 OR...

 OR...

 

 

NB: Light rays are shown by a line with an arrowhead in it, which shows the direction the light is travelling in.

A

B

C

Frankenstein's monster is checking how beautiful he looks in the mirror.

 

Which of these drawings shows the correct way in which he is able to see himself?

 

 

NB: A mirror is shown by a thick line with shading behind it.

A

B

C

Which of the following statements about light is NOT true?

light rays travel in straight lines

light travels as a lightwave

light travels at 300 million m/s

light was discovered by the Greek philosopher Aristotle

we can see light from 3000 light years away

  • Question 1

Objects that produce light are known as LUMINOUS SOURCES.

 

Click each of the following that you think is a luminous source:

CORRECT ANSWER
candle
sun
star
torch
fire
lamp
EDDIE SAYS
Anything that produces its own light is a luminous source. In the list above the moon shines because the sun's light is bouncing off it and cat's eyes also reflect light - from car headlights. All the others produce their own light.
  • Question 2

Some objects don't produce their own light but are very good at reflecting light.

 

Tick each of the following that you think are good reflectors:

CORRECT ANSWER
polished table
metal knife
shiny black shoes
window
EDDIE SAYS
Anything with a smooth shiny surface will be a good reflector. A lamp is not a reflector as it produces light, a rusty key has a rough (dull) surface and the sea is rarely completely still (as a lake sometimes is) so tends to scatter light rays in different directions.
  • Question 3

Amy and Sam were camping. They are about to light the fire.

 

Camp fire

 

"Oh no!" exclaimed Amy. "I've forgotten the matches!"

Sam wondered: "The Sun's hot today - can the Sun help us to light the fire?"

"Brilliant!" cheered Amy, "I'll get the aluminium foil - that's good at reflecting the Sun's rays. We can start a fire with that."

 

Which of the following do you think would be the best way for Amy to use the aluminium foil in order to reflect the Sun's rays to start the fire?

CORRECT ANSWER
spread it out as smooth and flat as possible
EDDIE SAYS
Smooth shiny surfaces reflect best, so if the aluminium foil is as like a mirror as possible it may be able to reflect enough of the Sun's rays to start their fire.
  • Question 4

What do you think is happening when light bounces off an object to your eyes?

CORRECT ANSWER
it's being reflected
EDDIE SAYS
Think about kicking a football against the wall - it bounces off - that's reflection. In fact try kicking the ball against the wall at different angles to see how it bounces off - where does it go? Light behaves in a similar way.
  • Question 5

Which of these objects reflects the most light?

CORRECT ANSWER
silver spoon
EDDIE SAYS
Smooth shiny surfaces are the best at reflecting, so most light will come back from the silver spoon, often leaving a patch of light on the ceiling.
  • Question 6

Which of these objects reflects the most light?

CORRECT ANSWER
calm lake
EDDIE SAYS
Since smooth shiny surfaces are the best at reflecting, the sea and river don't have smooth surfaces: they're always moving. That means that light bounces (scatters) off them at lots of angles. With a calm lake, the water can act like a mirror, reflecting the rays of light at the same angle so that a picture-perfect reflection is built up.
  • Question 7

Which one of these objects would you use to see around a corner?

CORRECT ANSWER
periscope
EDDIE SAYS
Whether you want to see around a corner, see what's going on at a golf match or are the captain of a submarine, a periscope is invaluable as it contains two mirrors (actually it's usually prisms, but that's another story!) so that light reflects off both of them, changing its direction so that you can see what would otherwise be invisible to you without moving.
  • Question 8

Frank is out for a walk. On his walk he sees a fine cedar tree.

 

Which of these drawings shows correctly the way that Frank is able to see the tree.

 

 OR...

 OR...

 

 

NB: Light rays are shown by a line with an arrowhead in it, which shows the direction the light is travelling in.

CORRECT ANSWER
A
EDDIE SAYS
A is correct because in order to see the tree, light must bounce/reflect off it. Some of those reflected rays reach Frank's eyes, enabling him to see the tree.
  • Question 9

Frankenstein's monster is checking how beautiful he looks in the mirror.

 

Which of these drawings shows the correct way in which he is able to see himself?

 

 

NB: A mirror is shown by a thick line with shading behind it.

CORRECT ANSWER
A
EDDIE SAYS
In A the light rays from the lamp are lighting up the monster's face; these light rays bounce off his face in all directions; some hit the mirror and reflect perfectly back to him enabling him to see his image - yuk!
  • Question 10

Which of the following statements about light is NOT true?

CORRECT ANSWER
light was discovered by the Greek philosopher Aristotle
EDDIE SAYS
Amazingly the only one that isn't true is that anyone DISCOVERED light! It really does go at 300 million m/s so a light year is how far light travels in one year - wow! And our eyes really can see stars whose light started out on its journey to us 3000 years ago. It's amazing stuff!
---- OR ----

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