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Unit 3

energy and force

Evaporation The point at which water turns to water vapor
Condensation The point at which water vapor turns back to water
Constant Property Property of matter that does NOT change. It stays the same
Magnetism The force of attraction or repel between 2 objects usually metal (iron, nickel, Cobalt & steel)
Attract A force that causes objects to pull together
Repel A force that causes objects to push back or away from one another
Mixture Two or more substances that when mixed together can be separated easily (trail mix, fruit salad)
Solution Two or more substances that when mixed together can NOT be separated (salt water, sweet tea)
Soluble Something that can be dissolved (sugar, salt)
Solvent The liquid that does the dissolving (water)
Filtration A process using a strainer to separate the larger particles in a mixture
Settling Allows the dense materials to sink to the bottom
Dissolve To add solid or gas to a liquid so that the particles get so small you can no longer see them
Ingredients The individual substances added to a mixture
Potential Energy Stored energy. No motion is taking place. This depends on an object's position. Ex. A ball NOT rolling, a still roller coaster at the top of the track, a book on a shelf
Kinetic Energy The energy of motion. This depends on mass and speed. Ex. A book falling or a ball rolling
Friction The force in which two things rub against each other (It causes things to heat up and slow down)
Force A push or a pull
Pressure To apply a force on the Surface of an object
Motion A change in the position of an object
Energy The ability to do work (potential, kinetic, chemical, mechanical, electrical, heat, light and sound)
Mechanical Energy Work done from something that with moving parts
Conductor A material that allows heat energy or electricity to pass through it easily (usually metal)
Insulator A material that does not let heat energy or electricity pass through it easily (plastic, rubber, cloth, wood, Styrofoam)
Thermal Another word for heat
Solar Energy Energy produced by the Sun
Radiation The movement of thermal energy through space
Heat Resistant Able to withstand heat
Absorb To take in or soak up
Convection The movement of heat energy through liquids and gases in currents. Heat rises when it cools then it sinks (lava lamp)
Current Electricity The flow of electrons through a conductor or path. Will produce light, heat or sound
Circuit A closed path that electrons flow through, made up of a source, path, switch and resistor
Static Electricity Electric charge that builds up on an object and instead of flowing as a current, it creates a spark
Source/Cell Electricity from a battery, solar, cell, fossil fuels or wind generators
Path A wire that a current flows through
Switch Turns a circuit on and off
Resistor/Load The object you want to work (light, TV, radio)
Electromagnet A temporary magnet made of Wire wrapped around a piece of iron hooked up to a battery
Series Circuit An electric circuit in which electrons have only one path to take. If one light goes out or is removed, they all go out
Parallel Circuit A circuit where the electrons have many paths to take. If one light is removed the other lights will still work and will get brighter.
Reflect The bouncing off of light rays from a surface (Enters and exits at the same angle) (Mirror, still water)
Refract The bending of light as it moves from one material into another (Rainbows, pencil in water)
Visible Light Spectrum The mixture of Colors of White light broken into their individual colors of the rainbow (ROY G BIV)
Convex Lens Thicker in the middle, makes objects look bigger
Concave Lens Lens is thinner in the middle, makes objects look smaller
Transparent Clear, all light can pass through
Translucent Cloudy, some light can pass through (Wax Paper, Stain Glass Window)
Opaque No light can pass through (Trying to look through a wooden desk)
Sound Created when molecules vibrate. The closer the molecules the better sound travels. Solid Carries sound the best
Vibration Back and forth motion of a substance that produces sound
Created by: Justin.magers