Earth's Structure

Front 1

hydrosphere

Back 1

all water on Earth (oceans, seas, lakes, rivers, glaciers, in Earth's atmosphere, and underground)

Front 2

biosphere

Back 2

all organisms that live on Earth (animals, plants, bacteria, etc.)

Front 3

atmosphere

Back 3

layer of gases surrounding Earth (water vapor, carbon dioxide, nitrogen, oxygen)

Front 4

geosphere

Back 4

Earth's entire solid body (soil, sediments, landforms, inner layers of Earth)

Front 5

inner core

Back 5

solid; most dense; mostly iron and some nickel

Front 6

outer core

Back 6

liquid; mostly iron and some nickel

Front 7

magnetosphere

Back 7

outer part of the magnetic field that interacts with charged particles from the Sun

Front 8

Earth's magnetic field

Back 8

produced because Earth's inner core spins faster than the outer core

Front 9

topography

Back 9

used to describe the shape of Earth's surface

Front 10

70%

Back 10

amount of ocean water covering Earth's surface

Front 11

density

Back 11

amount of mass per given volume (m/v); layers were formed and divided due to the differences in this measurement

Front 12

lithosphere

Back 12

includes both parts of Earth' s mantle and crust; floats on the asthenosphere layer

Front 13

asthenosphere

Back 13

partially molten layer of Earth's mantle; hot rocks that are melted and flow

Front 14

mantle

Back 14

largest layer of Earth; less dense than core, but more dense than crust

Front 15

Earthquake waves

Back 15

has allowed scientists to believe that the outer core of Earth is liquid

Front 16

temperature and pressure increase

Back 16

deeper within the geosphere; reason for solid state of inner core

Front 17

elevation

Back 17

how high or low a landform is above or below sea level

Front 18

more dense objects

Back 18

have a stronger gravitational force

Front 19

landforms on ocean floor

Back 19

canyons, trenches, mountains, plateaus, etc.

Front 20

mountain

Back 20

landforms with high elevation and high relief

Front 21

plateau

Back 21

landforms with high elevation and low relief; flat raised areas of land

Front 22

plains

Back 22

landforms with low elevation and low relief; large, flat areas of land

Front 23

crust

Back 23

outermost layer of Earth; least dense

Front 24

force of gravity when the distance between two objects decrease

Back 24

it increases

Front 25

Which force helped the newly formed Earth become a sphere in shape?

Back 25

gravity