Water

Front 1

74

Back 1

Earth's surface is covered with about________% of water.

Front 2

9,2

Back 2

Canada has _____% of all the Earth's water. Canada also has over ______ million lakes.

Front 3

0.003

Back 3

Only about _______ % of water is available in the world for humans to drink.

Front 4

Water quality

Back 4

How pure water is.

Front 5

salinity

Back 5

The total amount of all salts dissolved in water.

Front 6

Giardia

Back 6

A bacteria that causes problems to the human intestines.

Front 7

1.taste and color

2.turbility

3.toxic substances and pollutants

4.hardness and mineral content

5.bacteria

6. PH

7. dissolved oxygen.

8.solids

9. dissolved solids.

Back 7

Some things water is tested for:

Front 8

distillation

Back 8

the solution is boiled so that water evaporates and leaves the salt behind.

Front 9

reverse osmosis

Back 9

the water moves from an are of low concentration to an area of high concentration.

Front 10

wash

Back 10

the disturbed water or air behind a moving boat or aircraft or the sound made by this.

Front 11

tide

Back 11

change in water level overtime.

Front 12

closest, high tide

Back 12

The side of Earth that is ________ to the moon has the strongest pull of gravity from the moon. This causes ________.

Front 13

rate of water flow, slope of the stream's bed

Back 13

Stream characteristics include:

Front 14

sediments

Back 14

matter that settles to the bottom of a liquid

Front 15

watershed

Back 15

an area or ridge of land that separates waters flowing to different rivers, basins, or seas.

Front 16

continental divide

Back 16

a drainage divide on a continent. It determines which directions water flows.

Front 17

continental shelf

Back 17

the area of seabed around a large landmass where the sea is relatively shallow compared with the open ocean.

Front 18

Trenches,beneath,subduction ,

Back 18

__________ form when one tectonic plate slides __________ another plate at a ________ zone.

Front 19

seamounts

Back 19

underwater volcanoes that do not come above the surface of the water.

Front 20

mid-ocean,convection

Back 20

A __________ ridge forms when ________ currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.

Front 21

continental glaciers/icecaps

Back 21

Glaciers that cover an vast area of land.

Front 22

valley glaciers

Back 22

streams of flowing ice that are confined within steep walled valleys, often following the course of an ancient river valley.

Front 23

moraines

Back 23

a mass of rocks and sediment carried down and deposited by a glacier, typically as ridges at its edges or extremity.

Front 24

Eskers

Back 24

long ridges of gravel and other sediment, typically having a winding course, deposited by melt water from a retreating glacier or ice sheet.

Front 25

Drumlins

Back 25

Small hills with distinctive teardrop shapes. They form when a glacier moves over moraines that had formed earlier.

Front 26

Climate

Back 26

The average weather measured over a long period of time.

Front 27

rain shadow

Back 27

a region having little rainfall because it is sheltered from prevailing rain-bearing winds by a range of hills.

Front 28

Currents

Back 28

Streams of water that move within a larger body of water.

Front 29

1.wind

2.temperature differences in water

3.salinity differences in water

4. Earth's rotation

Back 29

Currents can be caused by the following:

Front 30

nothern,North Atlantic

Back 30

If surface currents start near the equator, they may carry water far into the ______ hemisphere, like the ___________ Current does.

Front 31

North pole

Back 31

If surface currents start closer to the ______, they may carry __________ into Southerly areas, like the ____________ Current does.

Front 32

more,cold

Back 32

Warm air can hold _____ moisture than ______ air can.

Front 33

warm

Back 33

As a result, wind blowing over a ______ oceancurrent will carry moisture

Front 34

cold

Back 34

Wind blowing over ________ ocean currents will be relatively dry.

Front 35

Tropical rainforests of South America,Asia, and Africa. Coral reefs

Back 35

The most diverse ecosytems in the world are the____________. __________ are the second most diverse ecosystems.

Front 36

Diversity

Back 36

The variety of different kinds of species living there.

Front 37

two thirds

Back 37

__________ of all the major types of organisms in the world live all or part of their lives in salt water.

Front 38

shore,aquatic plants stop growing

Back 38

from the _______ to where ____________ is the upper zone of a lake.

Front 39

middle

Back 39

The ____________ zone is the open water area that still has light penetration

Front 40

lowest, deep

Back 40

The ____ zone is the _________ part of the lake. No light penetrates this zone, so that no plants can grown there. Waste comes down here.

Front 41

11,000

Back 41

The deepest part of the ocean is about ______meters.

Front 42

Lake Baikal, 1700

Back 42

The deepest lake in the world is __________ in Russia. It has a depth of about_______ m.

Front 43

Inter tidal zone

Back 43

The shoreline of the ocean is the __________.

Front 44

streams and river, brackish

Back 44

In an estuary the freshwater from ________ mixes with the saltwater of the ocean to form ________ water.

Front 45

Adaptation

Back 45

The physical characteristics of a species or the behavior of a species.

Front 46

population

Back 46

A group of organisms of the same species that live in particular area.

Front 47

short period

Back 47

Short term changes in population are those that take place over a ________ of time and don't last long.

Front 48

the people

Back 48

Problem solving requires a strong commitment from_________.

Front 49

the distribution of the water.

Back 49

The Earth's water cycle is important because it controls________.

Front 50

28

Back 50

At the height of the Ice Age glaciers covered as much as ______ percent of Earth's surface.

Front 51

shearing

Back 51

The action of glacial ice breaking off is called_____.

Front 52

the passage of water through the cycle

Back 52

The direct influence that Glaciers have on the water cycle is that they slow down _______.

Front 53

predict flooding

Back 53

The reason that researchers need to know how much water is flowing through a river channel at a given time is because it helps scientists

Front 54

non-point sources

Back 54

Water in irrigation canals being contaminated by run-off from pesticides and fertilizers, is considered to be _______.

Front 55

breaker

Back 55

When the crest of a wave eventually outruns the trough, it topples forward onto he shore and is called a ____.