Lights Flashcards
Explain how a pinhole camera works like our eye
Light travels through the small hole and then onto the sheet on the back of the box. The small hole represents the pupil, the sheet represents the retina
Biconcave Biconvex
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How does light travel
In a straight line
State the difference between light and sound
Light is faster
State what an electromagnetic radiation is
How light travels
State what a vacuum is
Empty space
Light ______ off an object and into our _____
Reflects
Eyes
Explain what happens when you shine light through a denser object
Slows down and bends towards the normal line
Green Red
Blue
State the other colours
Blue and green make cyan💠
Green and red make yellow⚜️
Red and blue make magenta💗
State the what white light is made up of
SPECTRUM Red Orange Yellow Green Blue Indigo Violet
Explain what happens when you shine light through a less dense object
Speeds up, bends away from the normal line
What does a convex lens do
Focuses light on a single point
What does a concave lens
Spreads out light
What colour does a blue ball appear in:
A) white light
B) blue light
C) green light
A) blue
B) blue
C) black
State what dispersion is
Dispersion is when white light is divided into the spectrum
