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Article posted May 8, 2013 at 04:34 PM GMT0 •
comment • Reads 33
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Eggs. After the female lays her eggs in a redd, she dies. Leaving the eggs to dangers that can damage and hurt the eggs and redd like animals, loggers, hikers, and horse back riders.
Even if the eggs won't get hurt, they need things that can help them survive, like cool water(to warm, and they can die), and the redd, which brings nutrients for the eggs
The eggs that are laid in the fall are hatched in the spring and become alevin. About one inch long, they still have a yolk sac. It contains protein, minerals, sugar and vitamins. They feed off the yolk sac for a month or so until they emerge from the redd and become fry. Alevin that leave the gravel before the yolk sac is completely absorbed are called button-up fry.
Animals like gulls, dippers, sculpins and trout all feed upon salmon eggs and young alevin.
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Article posted May 8, 2013 at 04:34 PM GMT0 •
comment • Reads 33
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Article posted April 19, 2013 at 04:26 PM GMT0 •
comment • Reads 35
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Article posted April 19, 2013 at 04:26 PM GMT0 •
comment • Reads 35
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Article posted February 19, 2013 at 04:30 PM GMT0 •
comment • Reads 315
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1. The effort force, the effort distance, and the work grew the closer you get to the fulcrum.
2. Simple machines make life easier, like the lever and the pulley.Both help people lift hevier objects.
3. My team's lever didn't work, but one teams did. They first moved their motor near the bottom.It worked at first, but it couldn't lift 10 washers 10 centimeters, so they took washers off one by one, and they managed to lift 5 washers.
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Article posted February 19, 2013 at 04:30 PM GMT0 •
comment • Reads 315
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Article posted February 1, 2013 at 04:35 PM GMT0 •
comment • Reads 64
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Article posted February 1, 2013 at 04:35 PM GMT0 •
comment • Reads 64
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EMM Lesson 10
Article posted January 22, 2013 at 04:31 PM GMT0 •
comment • Reads 301
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1.The light bulb lite up.
2.The light bulb gets dimmer when there's 4 washers and lighter with 7 washers
3.(summery of the table)4 washers were very bright, 5 washers dim,6 washers brighter but not that bright and 7 washers was blinking on and off and dim
4.the more washers, the less the light bulb lights up.
5.the energy came from the gravity when it pulled the washers down
6.the work the washers did was for 4 was1.65 n-m,5 washers was 2.25n-m,6 washers 2.55 n-m, and 7 washers was 3 n-m.
7.the more washers on the string, the more work it does.
8. The distance and the number of washers could affect the brightening the light bulb.
9. Step 1:gather your materials
Step 2: set up your peg board.
Step3:
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Article posted January 22, 2013 at 04:31 PM GMT0 •
comment • Reads 301
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lesson 9
Article posted January 10, 2013 at 04:15 PM GMT0 •
comment • Reads 331
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1.A watt is a common unit of power.To calculate watts,you need to devide work by time.
2.the 100-W lightbulb uses 100-Nm.
3.One horsepower(another unit of power)equals to 750 watts.
4.Yes because with three batteries,the motor lifted the washers faster
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Article posted January 10, 2013 at 04:15 PM GMT0 •
comment • Reads 331
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Article posted December 21, 2012 at 04:28 PM GMT0 •
comment • Reads 310
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The scientifict definition of work is when its done on a object,but when we use the word work, we refer it to the effort it takes to get something done.there's a big difference.The daily definition of work means labor,while the scientific definition of work means to move something, like when a motor is lifting 6 washers.
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Article posted December 21, 2012 at 04:28 PM GMT0 •
comment • Reads 310
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Article posted December 13, 2012 at 04:29 PM GMT0 •
comment (1) • Reads 706
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When I put the washers on the pulley,the pulley lifted more washers than the pulley.
My hypothesis was that the pulley would lift more washers because the pulley would have more space and a lot more power.I was right.2 data points of mine was that one,the nail lifted only 4 washers while the pulley lifted 5 washers.
the best configuration was 3 batteries, series configuration, short string, pulley(for me, at least)but nail for everyone else,and three wires.the motors can lift 7 washers and the motor can generate 2.25 newtons.
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Article posted December 13, 2012 at 04:29 PM GMT0 •
comment (1) • Reads 706
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Article posted November 29, 2012 at 04:35 PM GMT0 •
comment • Reads 647
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1.Controlled variables can't be changed.
2.When you pull the block across the surface,friction slows the block down, and then the spring scale, it measures the friction.
3.the friction force would be 0.0.two blocks would still be o.o and three blocks would still be 0.0.
4.My conclusion was that when I put put each blocks on the coarse sandpaper,the friction force increased.my hypothesis was that the weight of the blocks would increase the friction force.my hypothesis was correct.
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Article posted November 29, 2012 at 04:35 PM GMT0 •
comment • Reads 647
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Article posted November 8, 2012 at 04:35 PM GMT0 •
comment • Reads 367
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1.I would make a little sling shot, put the cart in the sling shot, then fling it across the room.
2.I would tie the rubber band with another one,then pulling them to the maximum force.
3.The force that make objects have weight is called Gravity.
4.the direction that Gravity pulls the washers is down.
5.Because every thing has different mass,so the weight would be different.
6.Strength or energy as an attribute of physical action or movement.
7.When I put more washers, the weight increased.I predicted
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Article posted November 8, 2012 at 04:35 PM GMT0 •
comment • Reads 367
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9 different types of energy
Article posted October 28, 2012 at 08:43 PM GMT0 •
comment • Reads 970
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there are 9 different types of energy;sound,heat,solar,elastic,potential,chemical,electricity, and nuclear.An nuclear example is the Navy's subs and air-craft carriers.they run on nuclear energy. Potential energy is like a ball that is still.It has the potential to move.Elastic is like a rubber band.When you pull back on the rubber band, it snaps back.A fire gives off heat.The sun is an example of solar energy because plants convert the photons provided by the sun by using photosinthesis .Electricity is energy that powers something like a TV.Chemical energy is something thats in a battery. It has stored chemicals.Sound is like stomping.The sound waves projected from the stomping create noise to the person who's stomping and who ever can hear it.
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Article posted October 28, 2012 at 08:43 PM GMT0 •
comment • Reads 970
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Article posted October 28, 2012 at 07:31 PM GMT0 •
comment • Reads 711
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I think the motor takes more energy.I think that because when we charged a battery and hooked it up to the light bulb, it stay on for about 7 minutes, while the motor stayed on for about 5 minutes
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Article posted October 28, 2012 at 07:31 PM GMT0 •
comment • Reads 711
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Article posted October 28, 2012 at 06:50 PM GMT0 •
comment • Reads 318
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The battery that we made was made of a few things; a zinc strip, a blotter strip, a copper strip, 2 small strips of masting tape, a grain of wheat lightbulb, half a cup of CuSO4, and a rubber band.First, you put the blotter strip in the middle while the copper strip is on one side while the zinc strip is on the other side.Then, you wrap them together and bend the copper and zinc strip away from the blotter strip.Third, you put the masting tape on and tape on the grain of wheat lightbulb.Last, you put your battery in the CuSO4 and watch the light turn on.
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Article posted October 28, 2012 at 06:50 PM GMT0 •
comment • Reads 318
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Article posted October 11, 2012 at 04:27 PM GMT0 •
comment (1) • Reads 840
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Batteries are very useful. They make controllers work and can be charged too. Also, there are two sides to a battery; negitive and positive.I want to learn how to make a battery more tan one different way.
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Article posted October 11, 2012 at 04:27 PM GMT0 •
comment (1) • Reads 840
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Mt. Saint Helens
Article posted October 8, 2012 at 04:35 PM GMT0 •
comment • Reads 773
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Mt Saint Helens is a composite volcano.It had a lateral blast and it's lava is a high silica high water type.I also know that Mt Saint Helens is about 8000 ft, it erupted 1980. I don't think Mt Saint Helens is gonna form into a full mountain because when it erupted, it exploded so badly, that it'll take forever just to rebuild the side.
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Article posted October 8, 2012 at 04:35 PM GMT0 •
comment • Reads 773
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7 random facts
Article posted September 12, 2012 at 04:37 PM GMT0 •
comment (3) • Reads 1811
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I was born in North Carolina.
My favorite food is BBQ ribs.
I wear glasses because they make me see better.
I play the trumpet because it's loud and sounds really cool.
I been in four schools.
I love basket ball=http://!!!
I favorite game is transformers.
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Article posted September 12, 2012 at 04:37 PM GMT0 •
comment (3) • Reads 1811
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