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Vocabulary

Colors of light

Prism a cut piece of clear glass or plastic with twoi opposite sides in the sgape of n triangle or other peometric shape.

Spectrum a band of colors produced when light goes throug a prism.

Primary color red,green,or blue ,mixing this colors can produce all the colors of the sprectum.

Primaty pigment magenta ,cyan,yello,,material with any of these colors absorb one primary color  of light and reflects the other two.

VOCABULAY

Invisible light

electromagetism: the  production of magntism by electricity and the production of electricity by  magnets.

Elctromagnetic spectrum: all the wavelegths of visible and invisible light in order from short gammarays to long radio.

Laser: la device that produces a thin stream of light of just a few close wavelengths.

VOCABULARY

What matter is

Mass: the mount of matter in an object.

Volume: the amount of space an object takes up.

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Weight: a measure of the force of gravity between Earth and an object.

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 y the liquid or the object is placed in.

conduct :allow heat or elecricity to flow throught readily.

insulate: not allow heat or electricity to flow through readilly.

Vocabulary

What matter is made of

element : a basic building block of matter a pure substance that cannot be broken down   into anything simple.

Compound:a chemical combiation of 2 or more elements ito a single substance.

atom : the smallest unit of an element that still has the properties of the element.

Proton: a particle with a positive charge in the nucleus of an atom.

neutron : an uncharged particle in the nucleus of an atom .

electron : a particle with a negatve charge moving around the ucleus of an atom.

Nucleus : the dense center part of an atom.

Molecule: a group of more than 1 atom joined together that acts like a simple particle .

Vocabulary

Solids,liquids,and Gases.

State of matter: any of the the forms matter can exist.

Melting point: the temperature at which a solid changes state into a liquid..

Boiling point:the temperature at which a liquid changes state into a gas. 

Vocabulary

Mixtures and Solutions

Mixture:2 or more parts blended together  or more parts blended together yet keept