Light Lessons

Light, Heat and Sound

Multiple Choice

Which option best describes a translucent object? 

• No light shines through the object 
• All light shines through the object 
• Some light shines through the object 

Multiple Choice

Which option best describes a transparent object?

• Some light shines through the object

• No light shines through the object

• All light shines through the object

Multiple Choice

Which of the following is a source of artificial light?

• Firefly

• Lava

• Flashlight

• Glow stick

Multiple Choice

Which of the following is a source of natural light? 

• Flashlight
• The moon 
• The sun 
• Light bulb

Multiple Choice

Which is a transparent object?

• Glass

• Iron

• Copper

• Steel

Multiple Choice

Light travels in a

• Zigzag line

• refraction line

• straight line

• circle

Multiple Choice

A student observed that light spreads out as it leaves a light source as shown in the picture above.

Which of the following best explains what occurs because the light spreads out?

• Light appears brighter closer to the source.

• Light appears dimmer closer to the source.

• There is more light as you get farther from the source.

• There is less light as you get closer to the source.

Multiple Choice

A student observed that light spreads out as it leaves a light source as shown in the picture above.

Which of the following best explains what occurs because the light spreads out?

• Light appears brighter closer to the source.

• Light appears dimmer closer to the source.

• There is more light as you get farther from the source.

• There is less light as you get closer to the source.

Formation of light

How a rainbow is formed?

Why Objects Have Different Colors

Objects appear different colours because they absorb some colours (wavelengths) and reflected or transmit other colours.

The colours we see are the wavelengths that are reflected or transmitted.

White objects appear white because they reflect all colours.

Black objects absorb all colours so no light is reflected.

Secondary Colors

• Orange

• Green

• Purple

Primary Colors

• Red

• Yellow

• Blue

How Shadow are Formed?

Multiple Choice

the closer the object to the screen, the size of shadow will be

• smaller

• bigger

• same

Multiple Choice

The closer the object to light, the size of shadow will be

• smaller

• bigger

• same

Behaviors of Light when it Strikes Objects.

Look in a mirror

Do you know how can you see your image?

Multiple Choice

• Reflection
• Refraction

Multiple Choice

• Reflection
• Refraction

Multiple Choice

Why does the straw appear to be bent?

• light is reflected

• light is absorbed

• light is turned

• light is refracted

Multiple Choice

Why does the straw appear to be bent?

• light is reflected

• light is absorbed

• light is turned

• light is refracted