Vocabulary #3

mass: the amount of matter in an object 

volume: the amount of space an objects takes up

weight: (on Earth) a measure of how tightly packed matter is; the amount of mass contained in a given volume

density: a measure of how tightly packed matter is ; the amount of mass contained in a given volume

buoyancy: the upward push on an object by the liquid (or gas) the object is placed in

conduct: allow heat or electricity to flow through readily

insulate: not allow heat or electricity to flow through radily

Vocabulary #2

prism: a cut piece of clear glass (or plastic) with two opposite sides in the shape of a triangle or other geometric shape

spectrum: a band of colors produced when light goes through a prism

primary color: red,green.or blue; mixing these colors can produced all the colors of the spectrum

primary pigment: magenta, cyan, yellow; material with any of these colors absorbs one primary color of light and reflects the other two

electromagnetism: the production of magnetism by eletricity and the production of electricity by magnets

electromagnetic spectrum,: all the wavelengths of visible and invisible light in order from short (gamma rays) to long (radio)

laser: a device that produce a thin stream of light of just a few close wavelenghts

Vocabulary #1

opaque: completely blocking light from passing through.

transparent: letting all light through, so that objects on the other side can be seen cleary

translucent: letting only some light through, so that objects on the other side  appear blurry

polarization: allowing light vibration to pass through in only one direction

refraction: the bending of  light rays as they pass from one subtance into another

convex lens: a lens that curves  outward(is thicker at the middle than the edge) and brings light rays together

concave lens: a lens that curves inward (is thicker at the edges than the middle) and spreads light rays apart

bioluminescence: light produced by living organisms

ligtht ray: a straight-line beam of light  as it travels outward from its source

Law of Reflection: the angle of an incoming light equals the angle of the reflected rays

concave mirror: a mirror that curves in on the shiny side

convex mirror: a mirro that curves out on the shiny side