7Th Grade Science Final Exam Vocabulary

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 and do definite shape

Front 3

gas

Back 3

matter that has no definite volume and no definite shape

Front 4

element

Back 4

a substance that can not be broken down into simpler substances, and whoes atoms are exactly alike

Front 5

atom

Back 5

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

Front 6

atomic number

Back 6

information that can give you thee number of protons/or electons

Front 7

atomic mass

Back 7

the total number of protons and neutrons

Front 8

proton

Back 8

positively charged subatomic particle

Front 9

neutron

Back 9

no charge subaromic particle

Front 10

electron

Back 10

negatively charged subatomic particle

Front 11

metalloid

Back 11

elements that have characteristicsof both a metals and non-metals

Front 12

metal

Back 12

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

Front 13

non-metal

Back 13

elements that are usully dull and are poor conductors

Front 14

ionic bonding

Back 14

boding 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

alkaline earth metal

Back 16

reactive metals that have two valence electrons

Front 17

alkali metal

Back 17

most reactive metalks that have one valance electrons

Front 18

halogen

Back 18

reactive non-metalks that have one valence electrons

Front 19

noble gages

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 elements

Front 21

wavelength

Back 21

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

Front 22

frequency

Back 22

the number of waves produced in a given amount of time

Front 23

crest

Back 23

the highest point of a transvers 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 pointof a transverse wave

Front 26

transverse wave

Back 26

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

Front 27

amplitude

Back 27

the maximum distance a wave vibrates form its rest position

Front 28

condensation

Back 28

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

Front 31

runoff

Back 31

water that is styored below earth's surface

Front 32

groundwater

Back 32

water the is stored below earth's surface

Front 33

sublimation

Back 33

the change of state from solid to a gas

Front 34

infilation

Back 34

the entry of water fr om the surface into the groundwater

Front 35

transpiration

Back 35

the evaportion 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 suface over which it develops

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 gas to a liquid

Front 44

occluded front

Back 44

a type of front that priduces strong winds and heavy precipitation

Front 45

raditation

Back 45

the transfer of energy from the sun that heats up earths surface and atmosphere

Front 46

relative humidity

Back 46

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

Front 47

stationary front

Back 47

a type of fron tthat produces light winds and precipitation

Front 48

low pressure system

Back 48

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

Front 49

high pressure sytem

Back 49

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