Using Light

Multiple Choice

n. a tiny particle of light or electromagnetic radiation.

• photocopy

• photograph

• photon

• photosynthesis

• telephoto

Multiple Choice

Which one is not true about light

• Light is a form of nutrient

• Main source of light is the sun

• Light is a form of energy

• Light is the fastest

Multiple Choice

Does light move in straight line?

• yes

• No

• Maybe

Multiple Choice

A vacuum is a volume empty of matter, sometimes called 'free-space'

• TRUE

• FALSE

Multiple Choice

Light waves travel the fastest in

• solid

• liquid

• gas

• vacuum of empty space

Multiple Choice

Light waves travel the slowest in

• solid

• liquid

• gas

• vacuum of empty space

Multiple Choice

If a light waves moves from a solid to a liquid, the light wave will

• speed up

• slow down

• not change speed

Multiple Choice

Electromagnetic waves vary in

• the speed they travel in a vacuum

• wavelength and frequency

• the way they reflect

• the orientation of their electric and magnetic fields

Multiple Choice

The higher the frequency the ______ the energy. 

• higher
• lower
• neither, stays the same

Multiple Choice

The lower the frequency the ______ the energy.

• higher

• lower

• neither, stays the same

Multiple Choice

When we are able to see the object?

• We are able to see when the sun is outside.

• We are able to see when light shines on the eyes.

• We are able to see the object when light from the torch enters our eyes.

• We are able to see the object when reflected light from the object enters our eyes.

Multiple Choice

A leaf is green, what does this tell you about the light that is being absorbed?

• no light is being absorbed
• green is being refracted and all the colors are being absorbed.
• green is being absorbed and all the other colors are reflected
• green is being reflected and all the other colors are being absorbed

Multiple Choice

Which color absorbs all light?

• White
• Black
• Orange
• Green

Multiple Choice

Illumination means to _______ up.

• light

• dark

Multiple Choice

Light goes and comes back in a

• Stairght line

• No it does not

• Non of the above

Multiple Choice

The sun and the moon are

• natural light sources

• transparent

• artificial light sources

Multiple Choice

Red objects appear 'red' because:

• red objects are made from red materials
• red objects absorb red light
• red objects absorb all other colour except red light
• red objects don't reflect any light

Multiple Choice

Which image correctly shows how light would interact with the t-shirt and shorts?

• A
• B
• C
• D

Multiple Choice

Why does this the t-shirt appear red and the shorts appear blue?

• The t-shirt reflects red light, the shorts reflect green light, other colours are absorbed.
• The t-shirt reflects blue light, the shorts reflect red light, other colours are absorbed.
• The t-shirt reflects red light, the shorts absorb yellow light, all other colours are reflected
• The t-shirt reflects red light, the shorts reflect blue light, other colours are absorbed.

Multiple Choice

If you are using a green color filter, what color will you only see?

• blue
• green
• white
• red

Multiple Choice

Which color absorbs all light?

• White
• Black
• Orange
• Green