Light

Question 1

Energy

Answer 1

Is the ability to do work

Question 2

Plants use of light

Answer 2

Use light to make food (photosynthesis)
Photo=light
Synthesis=to make

Question 3

Humans use of light

Answer 3

Solar panels

Crooke’s radiometer

Question 4

Luminous

Answer 4

Give off light e.g. Sun lightbulb candle

Question 5

Non-luminous

Answer 5

Does not give off light

Question 6

Light travels in straight lines

Answer 6

We can show this by blocking light from a bulb with card

Question 7

Light does not travel around corners

Answer 7

Blocking light leads to shadows

Question 8

Solar eclipse

Answer 8

Occurs when the moon passes between the sun and the earth

Question 9

Lunar eclipse

Answer 9

Occurs when the earth is between the sun and the moon, the moon is in the earth’s shadow

Question 10

Light

Answer 10

Is a form of energy

Question 11

Reflection of light

Answer 11

Occurs when it bounces off a surface

Question 12

Regular reflection

Answer 12

Shiny smooth surface e.g. mirror

The Rays are reflected back at the same angle

Question 13

Irregular reflection

Answer 13

Rough surface e.g. ball of tinfoil

Question 14

Concave or diverging mirrors

Answer 14

Telescopes, makeup and shaving mirrors

Can enlarge the image

Question 15

Convex or converging mirrors

Answer 15

Side mirror in cars, security mirrors in shops

Small, upright image with a wider field of vision