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Fishing Unit 1
Water is life
Question | Answer |
---|---|
What are natural resources? | Something that can't be made in a factory |
what are aquatic resources? | Water and all things that live in or around water |
what is the hydrosphere? | all the water on earth |
What percent of the world is salt water | 97% |
what percent of the US is covered in water? | 4% |
What is the biggest user of water? | agriculture |
What is the second biggest user of water? | industries |
What is pollution? | careless use of water |
What is conservation? | careful use of water |
What are the three forms water can take? | Liquid, solid, gas |
why us water unusual? | because its solid form (ice) is not as dense as its liquid form |
Water contains dissolved oxygen. What is dissolved oxygen? | Oxygen in the water |
when does water pollution occur? | when too many natural or man-made substances get in the water |
Pure water is ______. Water may look clean but still be _______. | clear, polluted |
Most toxic pollution comes from what? | Man Made herbicides, pesticides, and industrial compounds |
how does temperature affect water? | Hot water holds less oxygen than cool water. All living things, including the plants and animals that live in water, need oxygen. |
when does oxygen pollution occur? | Organic pollution occurs when too much organic matter gets in the water and uses up a lot of oxygen. |
what is inorganic pollution? | when things like nitrogen and phosphates build up in the water |
what can happen if too much plant growth happens at the top of the surface? | Too much plant growth at the surface can block light from reaching deeper water. Then as the plants and algae die and decompose they use up the supply of dissolved oxygen. |
what is water quality? and what affects the water quality? | The amounts and types of pollution in water affect water quality. Cloudiness and temperature make a big difference in water quality. water quality is water's fitness for a specific use |
What are you testing when you test water quality? If you find a lot of organisms what does that tell you? | The water’s acidity and how much electricity it will conduct. It would tell you that the water is good |