Light
Define opaque
An object that lets no light through
What is the name of a mirror that is not curved
Plane
List all the colours that make up white light
Red, orange, yellow, green, blue, indigo, violet
Name all the planets in order
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
(INCORRECT IF INCLUDES PLUTO)
Define transparent
An object that lets through all light
State the law of reflection
The angle of incidence is equal to the angle of reflection
Why is a red ball observed as red?
It is absorbing all colours of light and reflecting red
What causes day and night?
Rotation on the Earth's axis
List the parts of the electromagnetic spectrum in order
Radio waves, microwave, infrared, visible light, ultra violet, x rays, gamma rays
How does light behave with a concave mirror
Converges
If you walk into a dark room, explain what happens to your eyes
The iris dilates the pupil to try and let in as much light as possible
(must include the why)
List the rocky planets
Mercury, Venus, Earth, Mars
Define refraction
The bending of light as it travels between mediums with different densities
How does light behave with a concave lens
Diverges
White light travels through a red filter and then a cyan filter. What colour would be observed?
Black
Jupiter has a larger orbit around the sun than Earth
Cancer treatments, medical imaging, sterilisation
Give two uses for a concave mirror
Telescopes, dental mirrors, solar cookers, microscopes
List the parts of the eye that light travels through in order starting with cornea (there are 5 parts total)
cornea --> pupil --> lens --> retina --> optic nerve
Explain why we experience seasons with reference to winter and summer
The Earth is tilted on its axis so if you are on the half of the Earth that is tilted away from the sun you are experiencing winter while the other half of the Earth is experiencing summer since it is tilted toward the sun