1.0:Humans depend on water supply and quality
How much water on earth is SALTWATER?
97%
How does water move through waves?
They do a small circular motion.
Name the five main reasons organisms in aquatic environments adapt.
Temperature, Light, Salinity, Pressure, Water movement.
What are the three major water uses in the world?
Agriculture, Industry, Domestic
What is a watershed?
an area of land that drains into a lake
Name the two ways to change salt water to fresh water.
Reverse osmosis, distillation.
What are stream characteristics?
Rate of flow, shape of bed, slope of bed.
Name two water quality changes.
Algal bloom (Blocks light and low oxygen), Acid rain
What are some advantages and disadvantages of agricultural use of water?
It can help water plants, but can dissolve salts and deposit them to the surface and deplete ground water.
What is diversity?
The different species in a single ecosystem
What is the average salinity for seawater?
3.5%
If the moon was north, what tide would it be on the west?
It would be low tide.
Name the three zones in a lake and some creatures you might see.
Upper (small fish, frogs), middle(Fish, phytoplankton), lowest (Catfish, Scavengers).
How can power stations pollute the water?
It can increase temperature, killing animals and increasing plant growth.
What does it mean to monitor?
To observe, check or keep track of
What is hard water?
Water with a high concentration of calcium and magnesium.
Name the four glacial features.
Moraines, kettle lakes, eskers, drumlins.
Name the four ocean zones, and the characteristics it has with them.
Intertidal, by the shoreline, sometimes have to live on land during low tide, Estuary, brackish water, marshes near, diverse, bird life prominent, continental shelf, warm water, diverse life. Oceanic zone, dark and deep.
How can sewage pollute water?
Can increase the number of micro organisms which can cause fish to suffocate and promotes plant growth.
What is a population?
Name five things drinking water is tested for.
taste, odor, turbidity, color, toxic substances, pollutants, bacteria, hardness/mineral content, pH (acidity), dissolved oxygen, solids, including floating materials, dissolved solids,
How can currents be formed?
wind, temperature differences in water, salinity differences, earths rotation
What is a seasonal/short term/long term change?
Its a change in populations, sometimes short or long, (Ex. Zebra mussels in great lakes = long-term) (Ex. seasonal = mosquitos) (Ex. short-term = oil spills)
How can you indirectly use water?
By making choices, buying things that use up water (Example, making plastic uses water, so buying plastic is indirectly using water)
What is the continental divide?
The rocky Mountains, the west flows into the pacific, while it the east, it flows into the artic or Atlantic ocean.