Structure of the Hydrosphere
What is most of the freshwater in the hydrosphere locked up as?
Ice
In a water supply, there are symptoms that indicate if the water is healthy or unhealthy. What is that called?
Indicators
Which zone is from the low tide line to the high tide line?
The intertidal zone
Water is a unique liquid substance because what two properties are very different from other liquids.
Chemical and Physical
What is a ridge that separates one watershed or river basin from the next?
Divide
What is most of the liquid freshwater on Earth found in the cracks and pores in rocks below Earth's surface?
Groundwater
Who regularly collect water samples to monitor the health of a water supply?
Ecologists
What ocean zone do seahorse, reefshark, sea cucmber, coral, and clownfish live in?
The Neritic Zone
What is the sticking together of molecules to different substances called?
Adhesion
What is a smaller area of land that drains into a smaller river, stream or lake?
Watershed
Universal Solvency
What is a measure of the health of a water supply
Water Quality
Which zone includes trenches, deep-sea volcanos, and the mid-ocean ridge?
The open-ocean
What is H2O bonded together by?
Covalent bonds
The twelve eastern basins all drain into what ocean?
Atlantic Ocean
What percentage of the Earth's hydrosphere is saltwater and freshwater?
97.5% is saltwater and 2.5% is freshwater
Increased levels of phytoplankton, sediment from erosion, re-suspended sediments from the substrate, waste discharge, algae growth, and urban runoff are all causes of what?
Increased Turbidity
75% of the breathable oxygen in the atmosphere is produced by algae in which zone?
The Photic Zone
What is a substance that dissolves other substances called?
Solvent
What is an essential part of our ecosystem because it supports unique communities of animals and plants that are adapted to live in brackish waters?
Estuary
What is the cause of water's unique properties?
The polarity of water's molecules
The acidity of the water is called what?
pH (presence of hydrogen ion)
In which zone have many animals that have thin bodies and are red or black?
The Dysphotic zone
What is a substance that is the reason behind our salty oceans?
Solvency
How many river basins is NC divided into?
17