Distribution of Water on Earth
What percentage of Earth's water is salt water?
97%
What is the depth of the photic zone?
200 meters
What is pH?
The concentration of hydrogen ions
What is turbidity?
Measure of the clarity of water
How do marine plant life create food through the process of photosynthesis?
Marine plant life use dissolved carbon dioxide, sunlight, and water to create food and release oxygen.
What percentage of Earth's water is freshwater?
3%
What depth does the twilight zone consist of?
0-1,000 meters
What does the pH scale range from?
1-14
What is an Algal bloom?
The result of excess nutrients in a water supply
What do marine organisms use for respiration?
Oxygen
What percentage of freshwater is potable?
1%
What depth does the midnight zone consist of?
1,000-3,000 meters
What is considered a neutral pH?
7
What does high turbidity mean?
High turbidity indicates poor water quality
What is the relationship between cold water and warm water?
Cold water holds more gas than warm water
What percentage of freshwater is ice?
69%
What depth does the Abyssal zone consist of?
4,000-6,000 meters
What is considered acid?
What does low turbidity mean?
Low turbidity indicates good water quality
What do salinity and seawater have in relation?
Seawater with lower salinity holds more gas than seawater with a high salinity level
What percentage of Earth's water is groundwater?
30%
What depth does the Hadalpelagic zone consist of? (trench zone)
6,000-11,000 meters
What is considered basic?
pH more than 7
What is the affect of an Algal bloom?
Does deep water or shallow water hold more gas?
Deep water, which has a higher pressure, holds more gas