Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Science Chapter 4
Chapter 4 study guide
| Question | Answer |
|---|---|
| What happens when light strikes an object? (behaviors of light) | reflected, absorbed, & transmitted |
| What is reflected light? | light that bounces off of objects |
| Whar is absorbed light? | take up light |
| What is transmitted light? | light that is send or sent off from one place to another |
| What are the 3 different types of materials that light can come in contact with? | opaque, transparent, and translucent |
| Opaque | a material that reflects all or absorbs all of the light that strikes it, ex. wood, metal,and cotton and wool fabrics |
| Translucent | allows some light to pass through,scatters light as it passes through,usually see that there's something behind a translucent object,don't see details clearly, ex. frosted glass and wax paper |
| Transparent | material transmits light, light passes right through,allowing you to see what's on the other side,ex. clear glass, water, and air |
| What are the 2 types of reflection? | Regular reflection and diffuse reflection |
| Regular reflection | parallel rays of light hit a smooth surface, all rays are reflected at the same angle |
| Diffuse reflection | when parallel rays of light hit a bumpy, or uneven surface, since each ray hits the surface at a different angle, the rays are reflected at different angles |
| What are the three types of mirrors? | Plane, convex, and concave |
| What type of image does a plane form? | produces an image that is right-side up and the same size as the object, produces virtual image-describes something you can see but doesn't really exit,ex. looking in a bathroom mirror,you can see but can't touch |
| What type of image does a concave mirror form? | form either virtual images or real images, real image when rays actually meet at a point ,they are upside down or inverted,can be larger or smaller than the object,if the object is farther from the mirror than the focal point, the image is real and invert |
| What type of image does a convex mirror form? | since the rays do not actually meet, images formed by convex mirrors are always virtual,ex. side rear-view mirror or store mirror |
| What is refraction? | when light enters a new medium at an angle, the change in speed causes them to bend, or change direction |
| What does the incident of refraction measure? | it measures how much a ray of light bends when it enters that material |
| What are the 2 types of lenses? | Convex and Concave |
| What type of image does a concave lens form? | because the light rays never meet, a concave lens can produce only a virtual image |
| What type of image does a convex lens form? | the type of image formed by a convex lens depends on the position of the object in relation to the focal point,if the object is farther away than the focal point, the refracted rays form a real and inverted,if object is between the lens and the focal poin |
| How does an object appear to have color? | you see an object as the color of the light it reflects |
| What is a primary color? | 3 colors that can be used to make any other color |
| What are the primary colors of light? | red, green, and blue |
| What are the primary colors of pigment? | cyan, yellow, and magenta |
| What is a secondary color? | any two primary colors combined in equal parts |
| What are the secondary colors of light? | yellow (red + green), cyan (green + blue), and magenta(red + blue) |
| What are the secondary colors of pigment? | red (magenta + yellow), green(cyan + yellow), blue(magenta + cyan) |
| What are pigments? | substances that are used to color other materials |
| What happens when colors of light are added together? | when combined in equal amounts, the primary colors produce white light, if combined in varying amounts, they can produce any other color |
| What happens when colors of pigment are added together? | by combining pigments in varying amounts,you can produce any other color |
| What are the parts of the eye? | cornea, iris, pupil, lens, ciliary muscles, retina, and optic nerve |
| What is the function of the cornea? | light enters the cornea, protects the eye from dust, acts as a lens |
| What is the function of the iris? | give eye its color, it's a ring of muscles that contract and expands to change the amount of light that enters the eye, most people the iris is brown,others blue or green |
| What's the function of the pupil? | part of eye that's black,the size of the pupil depends on whether the iris is contracted or expanded,let's light in the eye |
| What is the function of the lens? | it's a convex lens, the lens refracts light , forming an image on the lining of your eyeball |
| What is the function of the retina? | as the cornea and the lens refract light, an upside-down image is formed on the retina |
| What is the function of the ciliary muscles? | holding the lens in place contract or relax to change the shape of the lens |
| What is the function of the lens? | it's a convex lens, the lens refracts light , forming an image on the lining of your eyeball |
| What is the function of the retina? | as the cornea and the lens refract light, an upside-down image is formed on the retina |
| What is the function of the ciliary muscles? | holding the lens in place contract or relax to change the shape of the lens |
| What's the function of the optic nerve? | when the signals generated by the rods and cones travel to your brain along a short thick nerve,your brain automatically turns the image right-side up |
| What are the different parts of a camera? | shutter control,diaphragm, lens, aperture |
| How does the shutter control work like an eye? | It opens and closes like eyelids, when the shutter opens,it lets in light like when you open your eye lids it lets light in to your eye |
| How does the diaphragm work like your eye? | it controls the amount of light that enters the camera by changing the size of the aperture, similar to the way the iris of your eye controls the amount of light that enters your eye through the pupil |
| How does the aperture work like an eye? | it's like the pupil,it changes size depending how much light enters the camera it's where light enters the camera, |
| How does the lens work like an eye? | the lens focuses the light to form a real image on the film like the lens of your eye focuses on light to form a real image to be able to see |
Created by:
phillip clark
Popular Physical Science sets