Earth Science Chapter 13 About Ocean Motions

Front 1

wave height

Back 1

The vertical distance from the crest of a wave to the trough.

Front 2

Wave

Back 2

The movement of energy through a body of water.

Front 3

wavelength

Back 3

The horizontal distance between 2 wave crests.

Front 4

frequency

Back 4

The number of waves that pass a specific point in a given amount of time

Front 5

trough

Back 5

The lowest point of a wave.

Front 6

how do waves form

Back 6

Most waves form when winds blowing across the waters surface transmits thier energy to the water.

Front 7

Crest

Back 7

The highest point of a wave.

Front 8

What causes tides

Back 8

By the interaction of the sun, earth and the moon.

Front 9

Tides

Back 9

the daily rise and fall of earths waters on the shore

Front 10

spring tide

Back 10

a tide with the greatest difference between low tides that occur when the sun and moon are aligned with the earth

Front 11

neap tide

Back 11

a tide with the least difference between low tides that occur when the sun and moon pull each other at right angles

Front 12

energy from the tides

Back 12

the movment of huge amounts of water between high and low tides are a sourse of potencial energy, so engineers desinged tidal power plants that caputre energy as the tides move.

Front 13

ocean water

Back 13

96.5 water; 3.5 salt; of that salt sodium 30.6, Chlorine 55, sulfate 7.7; magnesium, 3.7 calcium 1.2, potassium 1.1 ; 0.76 other

Hint 13

None

Front 14

salinity

Back 14

the amount of salt in water

Front 15

Gases in water

Back 15

oxygen and carbon dioxide;

Front 16

temperature

Back 16

The water gets colder the deeper you go.

Hint 16

None

Front 17

desity

Back 17

more salinity the the more density

Front 18

pressure

Back 18

Increases 10 times in 100 meters of depth

Front 19

surface zone

Back 19

extends from surface to about 200m and the temp. is 17.5

Hint 19

None

Front 20

Transition zone

Back 20

extends from the bottom of the surface zone about 1 km temp about 4

Hint 20

None

Front 21

deep zone

Back 21

extends about 1km to the ocean floor, tmp about 3.5 C

Front 22

submersible

Back 22

a underwater vehicle built of strong matereals to resist pressure

Hint 22

None

Front 23

current

Back 23

it is a large stream of moving water that flows through oceans

Hint 23

None

Front 24

what are surface currents driven by

Back 24

by wind (100m down)

Front 25

coriosis effect

Back 25

the way the earth's rotation makes winds in the Northern hemisphere curve to the right and the winds in the Southern hemsiphere curve to the left

Hint 25

None

Front 26

climate

Back 26

is the pattern of temperature and precipitation typical of an area over a long period of time

Hint 26

None

Front 27

how do currents affect the climate

Back 27

if the water is cool it cools the air above it

Front 28

how are deep currents formed

Back 28

They are caused by the differences in density,

Hint 28

None

Front 29

upwelling

Back 29

upward movement of cold water

Front 30

El nino

Back 30

an abnormal climate event that occurs every 2-7 years in the Pacific Ocean, causing changes in winds currents and weather changes that can lead to dramatic climate changes.

Hint 30

None