Watershed Unit Test Review

Number three, along with Washington, D.C., name all of the other states that make up the Chesapeake Bay watershed. So all of the land where water flows into the Chesapeake Bay would be Virginia, Delaware, New York, West Virginia, Maryland, and Pennsylvania. Number four, what is stone hill middle school's watershed address? Top line should be stone hill middle school. Next line broad run. Third line Potomac river. And then on the fourth line, we have Chesapeake Bay, Atlantic Ocean. For a looking at the address above, why do you think that it is important to learn about the watershed? So you guys could have multiple answers here. And if you're unsure if your answer is exactly correct or what we're looking for, just ask your teacher, but a good one would be, it is important to learn about the watershed and to take care of it because a healthy watershed provides safe drinking water provides food, provides habitats for organisms and is a source of recreation for so many people. 

Question number 5, once you two draw any diagram of a watershed in the space provided below. Please label the following in your diagram. And once you label tributaries, headwater for some reason floodplains on there twice, so we're going to cross one of them out. Divide and main river. So according to this image, we have right here. I am going to label this one, the flood plain. What is a floodplain? That's a vocab word, guys. What did we say that was? A floodplain is a low plane next to a river that is created from river sediment and is periodically flooded. You probably would not want to have your home right in the floodplain, right? Then we have headwater right here. That's going to be the start of a river or the stream, where the water is coming from, that's where it is starting. We also have a tributaries that was another vocab word. What do we define tributary as? It is small rivers or streams that flow into a large river or stream. And now we have divide right here, and we're going to define that below. So I'm not going to go into that one quite yet. And then we have the main river, and you can tell that this is the main river because all of these other little tributaries are these little rivers or streams flow down into what we call the main river that flows like this. There you go. 

All right, so number 6, what is a divide? A divide is an elevated region, hills or mountains, that separates two watersheds. So let me change colors here. Dark blue, we're going to use if waterfalls right here is going to go this way. And it's going to flow and then it's going to come down here. But if it hits on this side, it would go down this way. So this right here is the divide. All the way around. It's labeled and yellow. That yellow dashed line for you. Right? This is a divide. Number 7, what is the main difference between point source and nonpoint source water pollution? Point source is a specific source of pollution that could be enough identified where as a nonpoint source is a widely spread source of pollution that can't be tied to a specific point. So let's give two examples of point source water pollution. This could be industrial waste and waste from a water wastewater treatment plant. Let's give two examples of a non point source. That could be construction and residential runoff. Number 8, how do fertilizers and pesticides that people apply to their yards impact the water supply? Yes, it makes your yard pretty and it keeps bugs away, but as the runoff moves, it picks up and carries away fertilizers and pesticides applied applied by people and deposits them into the watershed via lakes rivers and wetlands. 

This adds chemicals to our water, therefore polluting them. Number 9, name the physical indicators of a healthy water system. There are four of them, four physical indicators, four of them. You should know them for the test. You should know everything on study guide for the test, but you should be familiar with these terms. PH dissolved oxygen. Turbidity, that was another vocab word, right? And temperature. What does the water PH below 7 indicate? A PH below 7 indicates that a solution is acidic. Number 11, what is turbidity? And what does it indicate about water quality? So turbidity was a vocab word, so you guys should be familiar with what it means, but turbidity is a measure of water clarity, low turbidity would indicate clear water, which means there are fewer particles floating in the water. So a higher turbidity means it's much murkier, mucky or water, and there's a lot more particles floating within it. Number 12, what is the difference between biotic and abiotic factors? Give three examples of abiotic factors of a watershed. 

So abiotic factors are the non living elements in an ecosystem. Remember this next year for 7th grade, hint hint, 6th graders, my 7th graders had to know this term at the beginning of the year. So abiotic factors in the non living elements in an ecosystem, whereas the biotic factors are the living or once living organisms in an ecosystem. So examples of abiotic factors would be soil water, air, sunlight, minerals, rocks, and there's more. All right, number 13 to find wetland and explain how do wetlands help to control floods. Remember that presentation if you're in my class, we did it in small groups, but everybody should have went through that one with the wetlands notes. A wetland is an area of land covered with shallow, a layer of shallow water during summer, all of the year. They trap and slow the speed of floodwaters. 

Number 14, other than flood control named two things that wetlands do that are critical to earth. Wetlands are critical to the earth because they act as a natural water treatment areas by filtering out pollutants. They also provide habitats for wildlife and surface nesting and feeding grounds for resident and migratory birds. All right guys, that is all I have for you if you have any questions or are there anything you're still unsure about after that review, please see your teacher for some extra help. But I will leave you with this thought for the day. Two men walk into a restaurant. The first man orders a tall glass of H2O the second man says that sounds good. I'll have H2O2. And the second man dies.