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Science Final 2015

Vocabulary for the science final

FORCE The quantity that is determined by mass x acceleration (F=ma)
FRICTION The force that two surfaces exert on each other when they rub against each other.
WEIGHT A body's relative mass or the quantity of matter contained by it.
SPEED The distance an object travels in a certain amount of time.
VELOCITY An object's speed and direction at a given time.
ACCELERATION A change in the direction or velocity of an object over time. Acceleration due to gravity is 9.8 m/s squared
SLIDING FRICTION Occurs when two solid surfaces slide over each other.
ROLLING FRICTION Occurs when an object rolls on a surface.
STATIC FRICTION Acts between objects that are not in motion.
FLUID FRICTION Occurs when a solid object moves through a fluid.
WORK Done when a force that is applied to an object moves that object.
POWER Energy that is produced by mechanical, electrical, or other means and used to operate a device.
GRAVITY A force that pulls objects towards each other.
ENERGY Power derived from the utilization of physical or chemical resources.
KINETIC ENERGY Energy of an object in motion.
POTENTIAL ENERGY Stored energy due to its position.
ALTITUDE The height of an object above sea level.
WEATHER The current state of the atmosphere.
ATMOSPHERE A blanket of air and gases that surround a planet.
WATER VAPOR A gas in the atmosphere that is made of tiny water droplets and is invisible.
ELECTROMAGNETIC SPECTRUM A collection of radiation that includes visible light, X-rays, UV rays, gamma rays, infrared radiation, and radio waves.
GREENHOUSE EFFECT The trapping of the Sun's warmth in a planet's lower atmosphere due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.
SCATTERING The process in which electromagnetic radiation or particles are deflected.
OPTICAL TELESCOPE Telescopes that collect and focus visible light by using lenses and mirrors.
NONOPTICAL TELESCOPE Telescopes that examine light from the sky at wavelengths other than those of visible light.
PARALLAX The effect in which the position or direction of an object appears to differ when viewed from different positions.
LIGHT YEAR The distance light travels in a single year.(9.4605284 x 10 e12)
PENUMBRA Partial view of an eclipse shadow.
UMBRA Full and darkest part of an eclipse shadow
EQUINOX The days when day and night are of equal length. They occur twice a year (Mar. 20 and Sept. 22)
SOLSTICE The days when the Sun appears farthest north at noon. They are the longest and shortest days of the year and occur twice each year. (Dec. 21 and June 21)
Created by: hank.dolce