Reflection
This is what the light ray is called once it reflects off a mirror.
True or False: The angle of incidence of a light ray is always equal to the angle of refraction
False
True or False: A concave lens is thicker in the middle
False - a concave LENS is thinner in the middle
The three primary colours of light are
Red, green, and blue
This is the light ray that first hits the mirror
The incidence ray
Describe 2 things that happen when light travels through one medium of higher density through another medium of lower density
1. Light speeds up
2. Light bends away from the normal.
When parallel light rays hit a convex mirror, the reflected rays _________ and a __________ image forms ________ the mirror?
When parallel light rays hit a convex mirror, the reflected rays DIVERGE, and a VIRTUAL image forms BEHIND the mirror.
Light is a form of _________ and is made up of tiny particles called _________
Light is a form of ENERGY and is made up of tiny particles called PHOTONS
Translucent
If the angle of incidence is 54 degrees, the angle of reflection will be?
What is 54 degrees
What impacts how fast light travels through a medium?
How dense the medium is. The more dense the slower the speed of light.
True or False: When light rays are transmitted through a convex lens they converge on the opposite side of the lens forming a real image?
When light rays are blocked they form a ________
Shadow!
If a green light filter is put is used to filter white light, what colour will red pants appear to be?
Black - there is no red light to reflect off the pants.
True or False: A real image is formed behind a mirror.
False - for mirrors, a real image is formed in front of the mirror.
In which medium would light travel the slowest: space, air or water?
Water - water is the MOST dense
When parallel light rays hit a convex mirror, do they converge or diverge?
They DIVERGE when they reflect.
If light travels from air to plastic, the light will _________, bend __________ the normal, and the angle of incidence will be _________ than the angle of refraction.
If light travels from air to plastic, the light will SLOW DOWN, bend TOWARDS the normal, and the angle of incidence will be GREATER than than angle of refraction
An object can be heated to such a high temperature that it emits visible light is what type of light source?
Incandescent Light Source
This is the type of reflection that occurs when light rays hit an uneven surface (i.e. side of a mountain)
What is diffuse reflection
What type of lens can form both a virtual and real image?
A convex lens can form both images. A real image is formed when the object is behind the focal point of the lens, where a virtual image is formed when the object is in front of the focal point.
What is the law of reflection?
The angle of incident = the angle of reflection
What is the difference between a florescent light source and a phosphorescent light source?
Particles of a florescent light source release their energy immediately, where phosphorescent light sources release their energy slower and can continue to emit light after the energy source has been removed.
A object that gives off it's own light (like a candle) is a __________ object, while an object that only reflects light (like your t-shirt) is ___________ object.
A candle is a LUMINOUS object, but a t-shirt is a NON-LUMINOUS object