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Post by Professor Kyle Risnocov on Jan 11, 2006 19:37:41 GMT -5
Professor Kyle Risnocov sat at his desk and waited for students to enter.
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Roanna Black
2nd Year Slytherin
I'm alway up to no good
Posts: 81
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Post by Roanna Black on Jan 12, 2006 19:02:01 GMT -5
Roanna walked in to the class now looked around and found that she was the first into the class so she took a set at the back of the class room and waited for the class to start
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Post by Andrew Lockwood on Jan 13, 2006 17:12:47 GMT -5
Andrew enetered the class room ''good morning professor'' he said politly
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Casey Gwenevarius
1st Year Gryffindor
It does not do to dwell on dreams and forget to live. -Albus Dumbledore
Posts: 77
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Post by Casey Gwenevarius on Jan 14, 2006 0:53:39 GMT -5
Casey walked into her first class at her new school. She had become fairly well aquainted with the maze of corridors in the school by now. She timidly looked around the room for a seat, noticing how few students had shown up. It was still early. She found a seat and sat down, moving her long black hair out of the way as she did. She took out a self inking quill, some parchment, and her wand. Then she placed her chin in her hand and waited for class to begin.
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Post by Ryan Lipton on Jan 15, 2006 9:05:58 GMT -5
Ryan walked in for his first class of muggle studies a subject that really intrested him.
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Post by Amy Heart on Jan 15, 2006 15:34:54 GMT -5
She entered the classroom slowly and quietly. She took a seat in the front of the class. She was excited about this class, it sparked her intrest. So She sat there waiting for the class to begin. She took out her quill and a piece of parchment.
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Post by Professor Kyle Risnocov on Jan 15, 2006 17:16:21 GMT -5
The professor greeted each student as they entered the room and waited for them to be seated. Once a large amount of students were present, he began.
"Good Day class, I was almost taken back by the wave of students considering the site has been innactive for a little while, I was told to start the class anyway despite innactivness. Now to get down to business, since today is our first lesson if you are absent you will not be penalized, however those here will get a 100 for attendence which will surely help your grade. Also I won't penalize students who are late today."
The professor got up from his desk and walked around the room while continuing to lecture the students
"Now, today we will be talking about a fundamental aspect of muggle life, Electricity! Before I go on, can someone explain to me what electricity is? You can answer right away, you don’t need to wait for me to call on you."
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Post by Ryan Lipton on Jan 16, 2006 16:02:48 GMT -5
"It is a source of power used by muggle to work their appliances."
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Post by Amy Heart on Jan 16, 2006 17:49:43 GMT -5
She smiled for that was the answere she was about to say. But she kept quiet as always.
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Post by Professor Kyle Risnocov on Jan 16, 2006 17:49:49 GMT -5
"Great Job Mr. Lipton, 10 points for Gryffindor!"
" However it is also important to know how electricity is recieved and used. Its quite simple really. First, the electricity is conducted at a power plant. Some power plants use water and some use coal to make electricity. When Electricity is formed it is sent out along power lines which are carefully gridded throughout muggle towns. The power lines carry the energy to every muggles home where they may then use it.
To measure electricity the term watts is used. To find out how many watts an appliance uses, you multiply 120 by the amount of amps an appliance has.
For example if a toaster has 5 amps then it uses 600 watts of energy.
Once the amount of watts reaches 1000 it becomes a killowat. So if something has 1200 watts then it is 1.2 killowats. If the appliance is left on for one hour then it will use 1.2 Killowat-hours which is the unit for measuring how much electricity an appliance consumed over an amount of time. To find the kilowatt hour just multiply how many killowatts something uses by the amount of hours it is in use.
Now, lets give this a try,
Can someone tell me how many watts or kilowatts an appliance would use if it had 9 amps. And if that appliance was was turned on for two hours, how many kilowatt-hours would the appliance have used?
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Post by Amy Heart on Jan 16, 2006 19:26:33 GMT -5
"Well 9 amps multiplyed by 120 equals 1080 kilowatts. Multiply that by 2 equals 2160 kilowatts." she said hoping that was right.
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Casey Gwenevarius
1st Year Gryffindor
It does not do to dwell on dreams and forget to live. -Albus Dumbledore
Posts: 77
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Post by Casey Gwenevarius on Jan 16, 2006 21:27:15 GMT -5
Casey hurridly scribbled out the problem according to the professor's instructions. 9 times 120 =1080. 1080 = 1.080 kilowatts. If left on for 2 hours, would use 2.160 kilowatts. "I think that's right," she thought to herself as she quickly scanned over her work. She waited for someone to say the answer so she could see if she was right or not. Afraid to look the fool, she sits quietly, waiting.
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Post by Professor Kyle Risnocov on Jan 17, 2006 16:09:01 GMT -5
"Good job Ms. Heart you almost had it correct. However 2160 watts doesn't convert to 2160 kilowatts, since one kilowatt is 1000 watts this appliance would use 2.16 kilowatts. However, because you tried, I'll award five points to Ravenclaw." The professor walked to the front of a room where a diagram was drawn on the chalk board. " Today we will also be setting up simple ircuits to show how electricity moves and is used. At your desks you should all find a battery, 2 wires, and a light bulb.” The professor pointed to each item with its corresponding word. “Electricity always has a source whether it is a power plant, generator, or a simple battery as we are using today. The two wires on your desk are used to transport the electrical energy from the battery to the load which in our case is the light bulb. To complete a circuit and light up the bulb you will first need a partner. With your partner have each member take a wire and attach an end to one of the ends of the battery. Then take one end of your wire that isn’t on the battery and place it on the bottom of the light bulb. If done correctly each partner should have an end of their wire on the battery and each partner should have an end of their wire on the bulb. This will create a complete circuit and electricity will travel from the negative end of the battery through the first wire, to the light bulb, then through the second wire and then to the positive end of the battery. This creates a complete circuit because energy is flowing in a continuous path. Your circuit should be set up to look like a circle and the light bulb should be lit. Once you are finished call me over and I’ll see how you did, this may take a few tries as it is our first time doing this and the objects may be hard to keep still.” The professor then tapped his wand on the board which was soon filled with notes. " Please copy these notes real fast before you start your circuit" Notes: Circuit: A path which electricity follows. Source: The object or material that generates the electricity, this will always have two terminals. Load: The object that electricity flows to (ex: lightbulb, TV, toaster) This is how electricity flows through a circuit: The electrons will need to flow from the negative terminal to the positive terminal through a copper wire or some other conductor. When there is a path that goes from the negative to the positive terminal, you have a circuit, and electrons can flow through the wire. A circuit must be complete for the electricity to light the bulb. The following picture shows how electricity flows through a circuit. projectsol.aps.com/images/common/circuit2.gif
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Post by Ryan Lipton on Jan 17, 2006 17:20:24 GMT -5
Ryan looked around for a partner he turned to Amy. "Amy want to be partners"
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Post by Professor Kyle Risnocov on Jan 17, 2006 17:58:13 GMT -5
Prefessor Risnocov saw that the partnering might be an issue with the absence of some of the class.
" Never mind working with a partner, I'll make a duplicate of sets so everyone can work by themselves, it may be more effecient."
And with that, he gave a tap of his wand and another set of equipment appeared on each table.
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