Reflection and Mirrors
Define the terms transparent, translucent, and opaque in one sentence each.
Transparent = see through
Translucent = kind of see through
Opaque = Cannot see through
What happens to white light when it passes through a prism?
It will split into all of the colours of the rainbow (ROYGBIV)
What type of Electromagnetic radiation is the "most dangerous"
Gamma rays
What part of the eye is responsible for focusing light onto the retina?
Lens
What is one difference between a human eye and a fish eye?
Fish eyes are rounder to see in all directions at once.
State the law of reflection
The angle of incidence is equal to the angle of reflection
When light goes from a medium with a lower refractive index to a medium with a higher refractive index it will bend __________________ the normal line.
Towards
Draw a a wave, then label the crest, trough, and wavelength of this wave
varies
It shrinks
The diaphragm/ shutter
Name and define the two types of reflection
Regular and Diffuse (descriptions may vary)
Concave (caved in) = diverging rays
Convex (curved out) = converging rays
Complete the sentence from the study guide: " We see colour when an object _______________ all of the wavelengths of light but __________ the wavelength of colour we are seeing"
absorbs, reflects
Why is the fovea important to the function of the retina?
It funnels light onto the cones in the retina.
The lens is the part of the eye that magnifies an image, which part of a camera has this same function?
The camera lens
Describe the difference between concave and convex mirrors, and explain how the light reflects differently off of each of them.
Concave (like a cave) = converging reflection
Convex (curved out) = Diverging reflection
What does an image look like through a convex lens when you are in-front of the focal point?
Upright and larger
A red apple placed under a red light will appear what colour?
RED
What are the differences between rods and cones
Rods - black and white, on the peripheral vision
Cones - colour, on the center of your vision
The retina is the part of the eye responsible for "recording" an image, which part of a camera does this same thing?
The film
an object is placed behind the focal point of a concave mirror. What will the reflection look like (size and position)?
it will be smaller and inverted
Lucky you ... an "easier" question for more points!
What is the difference between reflection and refraction
Reflection is when light bounces off of something, refraction is when light passes through something
Which colour of light has the highest frequency?
violet/purple
What is hyperopia? What is the fix for this condition?
Farsightedness - corrected with glasses
What is the purpose of the tapetum lucidum in a cows eye?
To reflect more light helping cows see better in the dark