7Th Grade Vocab

Front 1

Solid

Back 1

Matter that has a definite volume and shape

Front 2

Liquid

Back 2

Matter that has a definite volume and no definite shape

Front 3

Gas

Back 3

Matter that has no definite volume and no shape

Front 4

element

Back 4

A substance that can't be broken donw into simpler substances, and whose atoms are exactly alike

Front 5

atom

Back 5

small particles that make up solid, liquid, and gases, have subatomic partciles called protons, neutrons, and electrons

Front 6

atomic number

Back 6

information that can give you the number of protons / or electrons

Front 7

atomic mass

Back 7

the total number of protons and neutrons

Front 8

protron

Back 8

postivitly charged subatomic

Front 9

neotron

Back 9

no charged subatomic particle

Front 10

electron

Back 10

negativley charger subtomic particles

Front 11

metalloid

Back 11

elements that have characteristics of both a metals and non-metals

Front 12

metal

Back 12

elements that are malleable, ductile, generally are shiny or metalic, luster

Front 13

non-metal

Back 13

elements that are usually dull and are pooor conductors

Front 14

ionic bonding

Back 14

bonding that takes place between a metal and a non-metal

Front 15

covalent bonding

Back 15

bonding that takes place between two non-metals

Front 16

alkaline earth metal

Back 16

reactive metals that have two valence electrons

Front 17

alkali metal

Back 17

most reative metals have one valence electrons

Front 18

halogen

Back 18

reactive non-metals that have seven valence electrons

Front 19

nobel gases

Back 19

non- reactive gases that have a complete outer shell

Front 20

valence electrons

Back 20

electrons that are on the outer shell of the elements

Front 21

wavelength

Back 21

the distance betweem a point on one wave and an identical point on the next wave, mesurred crest to crrest or trough to trough.

Front 22

frequency

Back 22

the number of waves produced in a givin 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 medium vibrate back and forth along the path that the wave travels

Front 25

trough

Back 25

the low point of a transverse wave

Front 26

transverse wave

Back 26

a wave in which particles of the wave's medium vibrate at right angles to the direction of the wave

Front 27

amplitude

Back 27

the maxium distance a wave vibrates from its rest position

Front 28

condensation

Back 28

the change of 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 change of state from a liquid to a gas

Front 31

runoff

Back 31

surface water traveling 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

inflitration

Back 34

the entry of water from the 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 boundry 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 amouent of water vapor in the air

Front 40

warm front

Back 40

a type of front that brings widespread rain

Front 41

air masses

Back 41

a large of air that has the same properties as earth's surface over which it develops

Front 42

conduction

Back 42

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

Front 43

dew point

Back 43

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

Front 44

occuled front

Back 44

a type of front that produces strong winds and heavy precipitation

Front 45

radiation

Back 45

the transfer of energy from the sun that heats up earth's surface and atmosphere

Front 46

convection

Back 46

the transfer of heat by the circulation or movement of the heated parts of a liquid or gas.

Front 47

relative humidity

Back 47

the amount of water vapor in the air compared to the amount it can hold at a specific temperature

Front 48

stationary front

Back 48

a type of front that produces light winds and precipitation

Front 49

low pressure system

Back 49

type of front that has counter-clockwise and brings bad weather

Front 50

high pressure system

Back 50

type of pressure system that has clockwise winds and brings fair weather