Fresh And Salt Water Systems

Question 0

What’s the difference between a lake and a pond?

Answer 0

Lakes - light doesn’t reach the bottom of the lake

Ponds - light dies reach the bottom, and can be longer than lakes

Question 1

What two places are fresh water found?

Answer 1

Surface water, and ground water.

Question 2

Causes of Waves and Tides.

Answer 2

Tides: the gravity of the moon
Waves: In the open ocean

Question 3

What is hard water? What are its effects.

Answer 3

Water containing a high concentration of calcium and magnesium

Question 4

Processes of Erosion and Deposition.

Answer 4

Erosion - water wearing down the soil

Deposition - laying down/deposition of sediments

Question 5

What are watersheds?

Answer 5

Watersheds are areas of land that drains water into a body of water… River, lakes, ponds.

Question 6

The water cycle.

Answer 6

Consideration, evaporation, precipitation.

Question 7

What is Distillation?

Answer 7

Technique for separating solution that involves boiling and condensation.

Question 8

What is Reverse Osmosis?

Answer 8

Movement of water through a membrane from an area of lower water concentration to one of higher water concentration; technique used for purifying water.

Question 9

4 ways that we depend on water?

Answer 9

Agriculture, industry, living needs, ecosystem.

Question 10

What of the population is fresh and salt?

Answer 10

Salt=97%

Fresh=3%

Question 11

What 4 countries have almost half of the fresh water.

Answer 11

1. Brazil - 18%
2. Canada - 9%
3. China - 9%
4. USA - 8%

Question 12

2 Potential problems that might occur due to the four countries having almost half of the Earth’s fresh water?

Answer 12

• War could break out

- Some countries could die faster

Question 13

What is a glacier?

Answer 13

A large moving mass of ice and snow.

Question 14

How is a glacier formed? (3 steps)

Answer 14

1. Snow flakes fall on the ground accumulate.
2. Fallen flakes turn snow grains over time.
3. As snow accumulates pressure turns snow grains to ice.

Question 15

Two types of glaciers? Explain.

Answer 15

Valley Glacier - A glacier that forms in a mountain range.

Continental Glaciers - Occur mostly at the poles and are so thick that they bury mountain range.

Question 16

4 glacier features and a definition.

Answer 16

1. Crevasse - A fissure or crack in the ice.
2. Cirques - Bowl shaped basins in the mountains.
3. Arête - A sharp ridge on a mountain.
4. Horn - A sharped peek on a mountain.

Question 17

4 reasons that glaciers are important to people?

Answer 17

• Fresh drinking water
• Used for irrigation of crops
• Hydroelectric dams
• Influence the water cycle

Question 18

2 problems that may occur if all Earth’s Valley glaciers melted.

Answer 18

• Flood

- we won’t have much fresh water