Social Studies

Front 1

Solar System

Back 1

The sun and objects that move about it, including planets, moons, and asteroids

Front 2

Orbit

Back 2

The path an object makes around a central object, such as a planet around the Sun

Front 3

Satellite

Back 3

A body that orbits a larger body

Front 4

Axis

Back 4

An imaginary line that runs from the North Pole through earth's center to the south Pole

Front 5

Rotation

Back 5

ONe complete spin of Earth on its axis

Front 6

Revolution

Back 6

One complete orbit around the sun

Front 7

Arctic Circle

Back 7

The line of latitude located at 66.5 degrees morth of the equator

Front 8

Antartic Circle

Back 8

the line of latitude located at 66.5 degrees south of the equator

Front 9

Solstice

Back 9

The days when the Sun's vertical rays are farthest from the equator

Front 10

Tropic of Cancer

Back 10

the lind of latitude that is 23.5 degrees noth of the equator

Front 11

Tropic of Capricorn

Back 11

the line of latitude that is 23.5 degrees south of the equator

Front 12

Equinoxes

Back 12

the 2 days of the year when the Sun's rays strike the equator directly

Front 13

Atmosphere

Back 13

The layer of gases that surrounds Earth

Front 14

Ozone

Back 14

a form of oxygen in the atmoshere that helps protect Earth from harmful solar radiation

Front 15

Water vapor

Back 15

the gaseous form of water

Front 16

water cycle

Back 16

the circulation of water from Earth's surface to the atmosphere and back

Front 17

Evaporation

Back 17

the process by which heated water becomes water vapor and rises into the air

Front 18

condensation

Back 18

the process by which water changes from a gas into tiny liquid droplets

Front 19

precipitaion

Back 19

the process by which water falls back to Earth

Front 20

Tributary

Back 20

any smaller stream or river that flows into a larger stream or river

Front 21

groundwater

Back 21

the water from rainfall, river, lakes, and melting snow that seeps into the ground.

Front 22

continental shelf

Back 22

the gently sloping underwater land surronding each continent

Front 23

landforms

Back 23

the shapes on Earth's surface

Front 24

Plain

Back 24

a neatly flat dredon Earth's surface

Front 25

Plateau

Back 25

an elevated flatland on Eartrh's surface

Front 26

isthmus

Back 26

a neck of land connecting 2 larger land areas

Front 27

Pennisula

Back 27

land bordered by water on three sides

Front 28

Plate Tectonics

Back 28

the theory that Earth's surface is divided into several major, slowly moving plates or pieces

Front 29

core

Back 29

the inner, solid part of Earth

Front 30

Mantle

Back 30

the liquid layer that surronds Earth's core

Front 31

Crust

Back 31

the outer, solid layer of earth

Front 32

magma

Back 32

melted rock int the uppermantle of Earth

Front 33

Lava

Back 33

magma that has broken through the crush to Earth's surface

Front 34

Continents

Back 34

Earth's large landmasses

Front 35

Subduction

Back 35

the movement of one of Earth's heavier tectonic plates undernearth a lighter tectonic plate

Front 36

earthquakes

Back 36

Sudden, violent movement along a fracture with in Earth's crust

Front 37

fault

Back 37

a fractured surface in Earth's crust where a mass of rock is in motion

Front 38

Pangaea

Back 38

earth's single, original supercontient

Front 39

Weathering

Back 39

the process of breaking rocks into smaller pieces through heat, water, or other means

Front 40

Erosion

Back 40

the movement by water,ice, or wind of rocky materials to another location

Front 41

Alluvialfan

Back 41

A fan shaped landform create by deposits of sediment at the base of a mountain

Front 42

Floodplain

Back 42

a land furmof level groudbui it by sediment depositeklskby stjeja;sdlkf

Front 43

deltas

Back 43

landforms created by the deposits of sediment at the mouths of rivers

Front 44

glaciers

Back 44

large, slow-moving sheets or rivers of ice