Spring Final 07 6Th Grade

Front 1

organism

Back 1

a living thing

Front 2

external stimulus

Back 2

a change in an organism's surroundings that causes the organism to react

Front 3

internal stimulus

Back 3

a change from within an organism, such as hunger and thirst, that causes an organism to respond

Front 4

response

Back 4

an action or change in behavior that occurs as a result of a stimulus

Front 5

stimulus

Back 5

a change in an organism's surroundings that causes the organism to respond

Front 6

fault

Back 6

a break or crack in the Earth's lithosphere along which rocks move

Front 7

fold

Back 7

a bend in rock that forms where part of Earth's crust is compressed

Front 8

igneous rock

Back 8

rock that forms from cooling of molten rock at or below the surface of Earth

Front 9

metamorphic rock

Back 9

rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions

Front 10

rock cycle

Back 10

a series of processes on the surface and inside earth that slowly changes rocks from one kind to another

Front 11

sedimentary rock

Back 11

rock that forms when particles from other rocks or the remians of plants and animals are pressed and cemented together

Front 12

uplift

Back 12

pushing up of Earth's crust by forces within Earth; such as when two plates are moving towards each other

Front 13

condensation

Back 13

the change from the gaseous to the liquid state of matter; such as water vapor changing into water

Front 14

evaporation

Back 14

to change from a liquid or a solid into a vapor or gas; such as water evaporates when it is heated

Front 15

precipitation

Back 15

forms of water such as rain, snow, hail, or sleet that fall from clouds and reach Earth's surface

Front 16

water cycle

Back 16

continous process where water moves from the earth's surface to the atmosphere and back passing through living and non-living parts of the environment

Front 17

water vapor

Back 17

the invisible, gaseous form of water

Front 18

aquifer

Back 18

an underground layer of rock or soil that holds water

Front 19

ground water

Back 19

water which is naturally found in the Earth which comes to the surface through wells or springs

Front 20

impermeable

Back 20

characteristic of materials through which water does not easily pass, such as clay or granite

Front 21

permeable

Back 21

characteristic of materials such as sand and gravel which allow water to pass (flow) easily through them

Front 22

run-off

Back 22

movement of water across a land area

Front 23

saturated zone

Back 23

a layer of permeable rock or soil in which cracks and pores are completely filled with water

Front 24

unsaturated zone

Back 24

a layer of rocks and soil above the water table in which the pores contain air as well as water

Front 25

water table

Back 25

the top of the saturated zone, or depth to the groundwater in an aquifer

Front 26

watershed

Back 26

the land area that supplies water to a river system; separated by a divide

Front 27

air masses

Back 27

a huge body of air that has similar temperature, pressure, and humidity throughout

Front 28

atmosphere

Back 28

the mixture of gases that surrounds Earth. The outer most of the four spheres into which scientist divide Earth.

Front 29

continental (air mass)

Back 29

a dry air mass that forms over land

Front 30

fronts

Back 30

the area where air masses meet and do not mix

Front 31

maritime (air mass)

Back 31

a humid air mass that forms over oceans

Front 32

polar (air mass)

Back 32

a cold air mass that forms north of the 50 degree N.latitude & S. of the 50 degree S. latitude & has high air pressure

Front 33

tropical (air mass)

Back 33

a warm air mass that forms in the tropics and has low air pressure

Front 34

asteroid

Back 34

object revolving around the sun that is too small to be a planet

Front 35

asteroid belt

Back 35

region of the solar system between the orbits of Mars and Jupiter, where many asteroids are found

Front 36

comet

Back 36

a ball of ice and dustwhose orbit is a long, narrow eclipse

Front 37

meteorite

Back 37

a meteroid that has hit the Earth's surface

Front 38

meteor

Back 38

a streak of light in the sky produced by the burning of a meteooid in Earth's atmosphere

Front 39

meteoroid

Back 39

a chunk of rock or space dust in space

Front 40

moon

Back 40

a natural satellite that revolves around a planet

Front 41

planet

Back 41

an object in space that orbits around a star; they do not generate heat and light

Front 42

solar system

Back 42

a large planetary system that consists of a combination of many smaller planetary systems ans objects

Front 43

star

Back 43

a huge object in space made of gas and giving off light and heat from nuclear reactions; such as the sun

Front 44

astronaut

Back 44

a person specially trained to travel and work in space

Front 45

exploration

Back 45

to travel for the purpose of discovery

Front 46

probe

Back 46

unmanned spacecraft designed to explore the solar system and transmit data back to earth.

Front 47

rocket

Back 47

A vehicle or device propelled by one or more rocket engines; such as a vehicle designed to travel through space

Front 48

rover

Back 48

manned or unmanned vehicle, used especially in exploring the terrain of a planet and its satellites

Front 49

satellite

Back 49

any object that revolves around another object in space; natural or artificial

Front 50

space shuttle

Back 50

reusable spacecraft with wings for controlled descent in the atmosphere, designed to transport astronauts between Earth and an orbiting space station and also used to deploy and retrieve satellites

Front 51

space station

Back 51

large satellite equipped for humans; designed to orbit Earth for extended periods; serves as a base for exploration, conducting research, repairing satellites, ...