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Flashcards in Surface Water Deck (18):
0

What maintains the loss and gain of water

The flow of rivers streams and groundwater sources into the oceans

1

The maximum amount of salt in drinking water

500 parts per million (ppm)

2

Percent of all water in oceans

97 percent

3

Percent that freshwater makes up of earths water

3percent

4

What percent of freshwater is unattainable due to being locked in ice and too deep below the surface

2percent

5

Percent that's drinkable

1percent

6

3 main stages in the water cycle

Evaporation, condensation, precipitation

7

Amount of liters that a tree can move through a tree to the air

1800 liters

8

Where water evaporates from

Surface water

9

Where groundwater ends up

Oceans

10

What changes water vapor to liquid when cold enough

Condensation

11

What does air do as it moves away from earths surface

Becomes colder

12

Why cold air can't hold as much water as warm air

It is more dense

13

How many water molecules to make a water droplet

100 million water molecules

14

How many water droplets to make a raindrop

100 million water droplets

15

Only compound to change to a solid gas and liquid

Water

16

The only thing to evaporate

Water molecules

17

How many liters fall on US each day in the form of rain or snow

15 trillion liters