7Th Grade Science Vocab Words

Front 1

Solid

Back 1

Matter that has a definite volume and definite shape

Front 2

Liquid

Back 2

Matter that has a definite volume but no definite shape

Front 3

Gas

Back 3

Matter thats has no definite volume and no definite shape

Front 4

Element

Back 4

A substance that can not e broken down into simpler substances, and whose atoms are exactly alike

Front 5

Atom

Back 5

Small particles that make up solid, liquid, and gases, have a subatomic particles called protons, neutrons, and electrons

Front 6

Atomic Number

Back 6

Information that can give you the number of protons/electrons

Front 7

Atomic mass

Back 7

The total number of protons and neutrons

Front 8

Proton

Back 8

Positivley charged subatomic particle

Front 9

Neutron

Back 9

No charged subatomic particle

Front 10

Electron

Back 10

Negativley charged subatomic particle

Front 11

Metalloid

Back 11

Elements that have characteristics of both metals and non- metals

Front 12

Metal

Back 12

Elements thats are malleable, ductile, generally are shiny or metallic; luster

Front 13

Non- Metal

Back 13

Elements that are usually dull and are poor conductors

Front 14

Ionic Bonding

Back 14

Bonding that takes place between a metal and non- metals

Front 15

Covalent Bonding

Back 15

Bonding that takes place between two non- metals

Front 16

Alkali Earth Metal

Back 16

Reactive metals that have two valence electrons

Front 17

Alkali Metal

Back 17

Most reactive metals that have one valance electrons

Front 18

Halogen

Back 18

Reactive non- metals that have seven valence electrons

Front 19

Noble Gases

Back 19

Non- reactive gases that have a complete outer shell, 8 valence electrons

Front 20

Valence Electron

Back 20

Electrons that are on the outer shell of the elemets

Front 21

Wavelength

Back 21

The distance between a point on one waves and an identical point on the next wave, measured crest to crest or trough to trough

Front 22

Frequency

Back 22

The number of wavesproduced in a given amount of time

Front 23

Crest

Back 23

The highest point of a transverse wave

Front 24

Compression Wave

Back 24

A wave in which the particles of the meduim vibrat back and forth along the path that the wave travels

Front 25

Trough

Back 25

The lowest point of a transverse wave

Front 26

Transverse Wave

Back 26

A wave in which the particles of the wave's meduim vibrate at the right angles to the direction of the wave

Front 27

Amplitude

Back 27

The maximum distance a wave vibrates from its rest position

Front 28

Condensation

Back 28

The change state from a gas to a liquid

Front 29

Precipitation

Back 29

Water falling from clouds including rain, snow, sleet, and hail

Front 30

Evaporation

Back 30

The state of matter from a liquid to a gas

Front 31

Runoff

Back 31

Surface water travleing from a high point to a low point

Front 32

Groundwater

Back 32

Water that is stored below Earth's surface

Front 33

Sublimation

Back 33

The change of state from a solid to a gas

Front 34

Infiltration

Back 34

The entry of water from Earth's surface into the groundwater

Front 35

Transpiration

Back 35

The evaporation of water from a plant's leaf

Front 36

Cold Front

Back 36

A type of front that brings narrow bands of violent storms

Front 37

Front

Back 37

A boundary between warm and cold air masses

Front 38

Air Pressure

Back 38

The amount of force exerted within the atmosphere

Front 39

Humidity

Back 39

The amount of water vapor in the air

Front 40

Warm Front

Back 40

A type of front that brings widespread rain

Front 41

Air Mass

Back 41

A large body of air that has the same properties as Earth's surface over which it developes

Front 42

Conduction

Back 42

The transfer of energy from the sun to the molecules in the air through direct contact

Front 43

Dew Point

Back 43

The point at which water is able to condense from a liquid to a gas