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We have three 6th grade Science classes and two 8th grade Science classes blogging here from the Pacific Northwest in Chimacum, WA! Sixth graders are learning a bit about Mt Saint Helens, environmental science through fresh water ecology, and physical science this year. Eighth graders are learning about life science this year. Please join us as we learn Science by exploring our world.
Mr. G's Blog
Mr. G's Class Facebook Page
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Friction
Article posted June 6, 2011 at 10:00 PM GMT •
comment • Reads 1763
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When an object slides on a surface friction pulls on that object until it come to a complete halt.
That is why we invented the wheel. To reduce friction.Different surfaces create different friction levels that is why we play hockey in an ice rink and not a sand paper rink.
Friction does not really go in a direction because friction slows objects when there rubbing against a surface that is why it does not have a direction.
Friction keeps objects from moving because the rule "an object in motion tends to stay in motion unless acted upon by an outside force." That same rule applies to objects that are not in motion.
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Article posted June 6, 2011 at 10:00 PM GMT •
comment • Reads 1763
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nathen turb
Article posted March 29, 2011 at 10:13 PM GMT •
comment (1) • Reads 894
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Q1: What is the water quality parameter you are using to test our creek? (write a compete description of it) My water quality parameter is turbitity. Turbitity is a measurement of how foggy or cloudy the water is. It is determind by how many solid particles are floating in the water the more solid particles that are in the water the higher the turbitity and the more cloudy it is.
Q2: How does it affect water quality? Turbitity will make the water less safe to drink think about it would you rather drink dirty water or clear water. The longer a fish lives in a body of water that has high turbitity levels the more stressed it will get until it dies.
Q3: How is it measured what levels are good what levels are acceptable what levels are bad? Turbitity is measured in NTUs. A good level would be around 0. An acceptable level would be around 0.5 because that is the highest level that is acceptable to be drank by humans a bad level would be 0.6 and up.
Q4: Turbitity affects humans by making water less drinkable. It affects fish by blocking sunlight from getting into the water witch disrupts photosynthesis and smothers the fish. It can also go straight to the salmons gills and kill them. The longer the fish stays in water with high turbitity the worse its condition.
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Article posted March 29, 2011 at 10:13 PM GMT •
comment (1) • Reads 894
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Nathen graph
Article posted March 3, 2011 at 10:17 PM GMT •
comment (1) • Reads 860
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This is the turbitity levels for the chimacum creek. Over all they are good
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Article posted March 3, 2011 at 10:17 PM GMT •
comment (1) • Reads 860
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Turbitity
Article posted March 3, 2011 at 09:57 PM GMT •
comment • Reads 264
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Article posted March 3, 2011 at 09:57 PM GMT •
comment • Reads 264
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salmon life cycle
Article posted January 5, 2011 at 10:07 PM GMT •
comment • Reads 881
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A description of an egg is that it is pea sized and orange colored. The needs of an egg are that it needs a redd to rest on. They also need clean and cool water it helps if there is shade. Some threats to salmon eggs are that redds can be destroyed by people or animals crossing the river also dirt can wash into the river and land on the redds smothering the eggs.
An alevins length is about one inch and has a yolk sac. Its needs are that it needs the protien, sugar, minerals, and vitamins contained in the yolk sac. the alevin also has many threats such as gulls, dippers, sculpins, and trout. The fry will start to develop vertical parr marks and spots as they grow. A fry needs to have bugs to eat and wooden debris to hide under and cool water. The threats to a fry are that previus logging practices have already caused problems. A smolt has bluish greenish back and has tolerance for salt water. The smolt needs to have things called juvenile bypass systems they are man made creations that help the smolt get past dams. A smolts threats are hidroelectric dams, predators, and pollution from cities, factories, and farms. Sea run adults are silver until they go back to there home stream. They need small fish to feed on such as shrimp, and squid. There threats are sea lions,Orca whales, and seals another threat is commercial fishermen. A male spawner has a hooked snout and it also changes its silver colors to brilliant colors. The female spawner does not have as brilliant colors as the male but the female changes colors too that can vary from reds to browns depending on the species. A spawning salmon needs a mate A spawning salmon also needs to have the color changes to attract a mate. A spawners threats are fishermen, all the predators they faced going downstream and more. A spawners predators are bears, wildcats, and eagles.
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Article posted January 5, 2011 at 10:07 PM GMT •
comment • Reads 881
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water pollution
Article posted November 8, 2010 at 10:10 PM GMT •
comment • Reads 1196
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What is water pollution?
What are some of the sources of water pollution?
What are some of the consequences of water pollution
what is water pollution? Ground water can get polluted for example chemicals like pesticides can seep down through the ground and contaminate the ground water. There is also heavy metals that come from big industries that filter into the water. Did you know every time you throw a little tiny piece of garbage in the ocean you’re helping the fourteen billion pounds of garbage that are dumped into the oceans every year multiply. There is also surface water pollution surface water is the water on the earth’s crust like rivers and oceans. There is also oxygen depletion it is when micro organisms feed on biodegradable substances when to much biodegradable substances are in the water microorganism's will multiply and use up all the oxygen. Another type of water pollution is chemicals chemicals usually get into the water by oil spills. Another type would be microbial it is when micro organisms make all the fish ill. Another type would be nutrients when too much nutrients get in the water algae grows and it uses up all the oxygen. One more would be suspended matter it is when hazard's chemicals get in the water and are dangerous to marine life development. In this paragraph you learned about some of the types of water pollution in the next paragraph you will learn about some sources of water pollution.
What are some sources of water pollution?
there is sewage and waste water pollution it comes from domestic house holds and industrial companies. Another is marine dumping it is when items like six packs get dumped into the oceans. Another would be industrial waste it is when industries use water to carry away waste. Another would be nuclear waste it is when scientific studies or medical studies are done when this is done they pollute the water through the nuclear fuel cycle. Oil spills are another one they come from oil rigs and boats they suffocate fish and stop sun from getting to the plants. When we pollute the air the water mixes with this and then it creates acid rain then the acid rain gets into lakes and rivers. Another would be under ground storage leakages it is when steel pipes that holds dangerous substances that are exposed to the environment cu-rode and contaminates the earth around it. Another would be global warming it is when the normal heat rises due to green house gases. One more would be eutrophication it is when the environment becomes enriched with nitrates it can become a problem for marine life in lakes. In this paragraph you learned about some sources of water pollution now lets a little about the consequences of water pollution.
What are some consequences of water pollution
Some of the consequences of water pollution are when heavy metals pollute the water it can be fatal to marine life such as fish and shell fish and when we eat these fish it can cause birth defects. There is also industrial waste that contains toxic compounds that damage marine life. Another would be organic matter and nutrients they cause an increase in algae that depletes oxygen that suffocates the fish. Acid rain is harmful to marine life because the sulfate that is in it can cause health problems to marine life that are in the lakes and rivers that it rains in. Suspended particles will reduce the quality of drinking water and makes water get less sun light witch kills plants in the water.
What can be done to improve the quality of water after it has become polluted? People need to know how to throw away our waste properly. Preventing water pollution is a public problem. Septic tanks are a way to clean polluted water because the solid material is separated depending on the density. The heavy particles sink to the bottom and the lighter particles like soap scum form a layer at the top of the tank. Another way is ozone waste water treatment the problem with it is that it cost electricity and you can not do it if power is out and it cost money. a good thing is that the ozone becomes back in to oxygen very quickly. It kills bacteria efficiently but it can’t dissolve salts and minerals. industrial water treatment. it goes through the first part of the treatment by getting rid of solid particles and inorganic material are removed by filters. the secondary part is when they reduce some of the organic witch is done by biological filters and it processes it naturally and degrades the organic waste. Their is no foul odours or residues that come from the treatment.
What are some actions that can be taken to help prevent water from becoming polluted?
Don’t litter in our oceans because it kills marine animals. People also litter in lakes and some actions are scientist could create pesticides that don’t affect water in harmful ways. Solutions are finding the urban area and reduce dependence of pollutants. Pick up litter that you see on beaches and throw it away in a nearby garbage bin. Be careful what you poor down your toilet or sink. Don’t throw oil or paints or other harmful waste down your sink or toilet. Don’t run tap water when not necessary this help because it makes it less likely to get water shortages.
What are nitrates and how do they get into our water supply?
Nitrates is dissolved nitrogen in a primary form in water. Nitrates are oxygen combined with nitrogen. Fertilizers seep
What effect do high nitrates have on people?
If people under that is under the age of 6 months that drink water that is high in nitrates has the highest chance of getting methemoglobinemia or baby blue syndrome.If adults drink water that is high in nitrates it does not effect like at all. If pregnant women drink water that is high in nitrates it would not effect her but it will effect the baby so the baby will have birth effects.
What effect do high nitrate levels have on people?
The safe amount of nitrates is 10m/g per litter but if infants drink water that is under 10m/g per litter it is really bad for them.
What should a person do if there are high nitrate levels in their water supply?
One way to get ride of nitrates that is in your water supply, which is boil the water which burns the nitrates,and other germs. Another way is by reverse osmosis, which forces water under pressure through a membrane that filters out minerals and nitrate. One-half to two-thirds of the water remains behind the membrane as rejected water.another way to get ride of nitrates and other germs is to Ion-exchange it, which is to take another substance such as chloride and trades places with nitrate.the other way to get ride of nitrates and other germs is An ion exchange unit is filled with special resin beads that are charged with chloride. As water passes over the beads, the resin takes up nitrate in exchange for chloride.the last final way to get ride of nitrates and other germs is Blending is another method to reduce nitrates in drinking water.Mix contaminated water with clean water from another source to lower overall nitrate concentration. Blended water is not safe for infants but is acceptable for livestock and healthy adults.
What can be done to help prevent nitrates from entering our water supply?
Farmers need to not over fertilize there crops and farms because than it could put nitrates into our drinking water,lakes,and oceans.a person like needs to check there lawn almost every day needs to see if there lawn is over 0.500 and if there crops and farms get over fertilized it could put nitrates in our water supply.
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Article posted November 8, 2010 at 10:10 PM GMT •
comment • Reads 1196
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Seven random facts about me
Article posted November 2, 2010 at 10:11 PM GMT •
comment • Reads 2730
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I play foot ball
I like pie
I like playing video games
I am funny
I'm in great shape
I have lots of friends
I like camping
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Article posted November 2, 2010 at 10:11 PM GMT •
comment • Reads 2730
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