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Description
Flashcards by Braden Papa, updated more than 1 year ago
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Created by Braden Papa
over 7 years ago
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| Question | Answer |
| What do the Wave Model and the Particle Model make when put together? | The "Wave Particle Duality". |
| What is a wave and examples of one? | The movement of energy through something. (a medium) E.g. Water, Sound, Energy, Light, and Waves of Enemies. |
| What are the two types of waves and a description of them? | Compression waves involve multiple circular lines that compress against each other. (E.g. sound) Transverse Waves are squiggly and go up and down. (E.g. water) Look at your notes if this doesn't make sense. |
| What are the parts of the wave? | The topmost part is called the peak, the distance between the middle and the peak is the amplitude, the bottom-most part is the trough, and the distance between two peaks is the wavelength. Check notes if this doesn't make sense. |
| How can you tell what wave has higher or lower frequency? | The wave with the higher frequency has a lower wavelength than a wave with lower frequency. Check notes if this doesn't make sense. |
| What is the Electromagnetic Spectrum and explain all the parts and their relation to wavelengths. | The Electromagnetic (EM) Spectrum contains all known wavelengths for EM radiation, including "light". From longest wavelengths to shortest wavelengths: Radio Waves - Microwaves - Infrared - Visible light - Ultra Violet - X-Ray - Gamma Rays. |
| Explain how colour relates to light and wavelengths. | Different wavelengths of visible light produce different colours. Red has the longest wavelength at 700 nanometers, and Violet has the shortest visible light wavelength at 400 nanometers. The colours go Red - Orange - Yellow - Green - Blue - Indigo - Violet. Check notes if this doesn't make sense. |
| Explain the Ray Model of Light and how it treats light. | The Ray model treats light as a Particle: These "packets" of light are called Photons, when a photon encounters a new surface or medium it will interact with it based on that material's properties. |
| Describe types of materials and what happens when light happens to them. Include examples. | Opaque: reflects/absorbs light. E.g. Tables, binders, chairs. Translucent: Some light goes through but objects seem blurry. E.g. milk jug, light bulb covers. Transparent: Light goes right through it. e.g. glass, windows |
| What are mirrors? | Mirrors are reflective surfaces that light photons bounce off of. Along with Lenses they are one of our most popular methods for altering the path of light. |
| Describe what the three types of mirrors are and what they do to light. | Plane: light reflects straight off into the same direction the light came. It is a flat mirror. Concave: A mirror curved inwards. It reflects light towards one central point. Convex: A mirror curved outwards. It reflects light outwards away from the central point. |
| What are the parts of reflections? (Angle of ___?) | The Incident ray is the light ray from the original light producer. The Reflected Ray is the incident ray reflected off a mirror. The Normal is the middle part in between the reflected ray and incident ray. The angle between the Normal and the Incident Ray is called the Angle of incidence, and the angle between the Normal and the Reflected ray is called the angle of reflection. This applies to all mirrors. |
| What are lenses? | Along with Mirrors, Lenses are one of the main ways that we alter/manipulate light. Lenses change the direction of light using refraction. |
| What is refraction? | Refraction is the bending of light as it moves from one moves from one medium to another. E.g. a fish in water is lower than it looks because the light as it travels through the water is bent. |
| What are the two types of lenses and what happens to light when it passes through them? | Concave lenses: Lenses that are shaped like two concave mirrors back to back. Light diverges, meaning light goes out away from the center point. Convex Lenses: Shaped like two convex mirrors back to back. Light converges, meaning it focuses on one point. |
| How do images appear on different lenses? | On concave lenses the images appear smaller, and on convex lenses the images appear upside down. |
| What are the different parts of the eyeball and what do they do? | Cornea: The primary refractive surface of the eye, also protects everything inside the eye. Iris/Pupil: Pupil is the hole which the light passes through and the iris controls how big the hole is. Lens: focuses light for your brain to analyze. Retina: takes light and converts it to nerve signals. Optic Nerve: Sends nerve signals from the eye to the brain. Vitreous Humor: keeps everything in the eyeball in place. |
| Where are the parts of the eyeball? | The Optic nerve is at the back of the eye, the Retina is the inner layer that covers the inner eye, the vitreous body covers basically everything inside the eye, the lens is between the vitreous body and the iris, the iris, cornea, and pupil are in front of the lens, but the pupil is the middle black part, the iris is around the pupil, and the cornea protects all. |
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