WAVES
What is the amplitude of a wave?
The distance from the middle, rest position, of the wave to the crest or trough.
Electromagnetic radiation is a form of _______
Energy.
What are the three different opacity of light?
Transparent, translucent, and opaque.
What is the difference between a concave and convex lens/mirror?
A concave lens/mirror is caved inwards, while a convex les/mirror is bended back-wards like the letter C.
What is the vitreous humour?
The clear liquid inside the eye that helps keep the eye's shape.
What is the relationship between the wavelength and frequency?
The frequency is the wavelength divided by the time.
How many different types of electromagnetic radiation is there?
What are the primary colours of light?
Red, green, and blue.
What is a focal point?
The point where the light rays meet.
What type of lens is in our eyes?
Our eyes have convex lenses.
How do you measure the frequency of a wave?
Take the wavelength and divide it by the time.
Does a longer or shorter wavelength have more energy?
A shorter wavelength has more energy.
What are the three things that can happen to light?
It can be absorbed, reflected or transmitted.
From what line do you measure the angles of reflection and incidence?
The normal.
Why is it important that we have a certain type of lens in our eyes? What would happen if we had a different type?
A convex lens is a converging lens and focuses the light onto the retina. A concave lens would do the opposite and spread the light. This would make it hard to focus our eyes.
What is the difference between a transverse wave and a compression wave?
A transverse wave is created with an up and down motion.
A compression wave is created with a side to side motion.
On a scale from 1, the longer wave length, to 10, the shortest wave length, where would gamma rays be?
10
The longer the wavelength, the _________ the light bends.
Less
What does the convex mirror do to an image?
A convex mirror makes an image look smaller than it actually is.
List 8 parts of the eye.
1. Sclera. 6. Lens
2. Cornea. 7. Retina
3. Pupil. 8. Optic nerve
4. Iris
5. Vitreous humour
What are all the different characteristics of a wave?
Amplitude, crest, trough, wavelength, and rest position.
What is the difference between gamma rays and x-rays?
X-rays have longer wavelengths and a lower frequency than gamma rays.
How is refraction different from transmission?
Refraction involves the light ray going from one material to another while transmission is when a light ray goes right through a material like glass.
What is the difference between a mirror and lens?
A mirror reflects light back, while a lens lets light pass through.
What are the receptors in our eyes called?
Rods and cones.