On May 4, 2016 our class went to playland! Our job was to find the cost of electricity for each ride as well as the total amount of money spent on energy in a season. Another question asked is if Playland is cost-effective to Vancouver. Heres a video to show all of this together, as well as the amount of fun it is at the amusement park! By the way the amount of money for the day on each ride is actually supposed to be for each hour. Just a typo. Enjoy!
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![]() JJ Thompson Date of Birth/Death: December 18, 1856/August 30, 1940 Nationality: British Scientific theory: He thought there were particles which were smaller than atoms which he was correct about because he discovered electrons. Diagram: Fun Fact: He was called Sir Thompson because he got knighted by the Queen for his excellent work with science. Ernest Rutherford Date of Birth/Death: August 20, 1871/October 19, 1937 Nationality: He is from New Zealand Scientific Theory: His theory was how negatively charged atoms have a positive nucleus. Diagram: Fun Fact: Two of his brothers drowned in 1886 Josh Dalton Date of Birth/Death: September 6, 1766/July 27, 1844 Nationality: British Scientific Theory: He proposed all matter in the universe is made of atoms. Diagram: Fun Fact: He was born being blind and later on people started calling colour-blindness as daltonism. Niels Bohr Date of Birth/Date: October 7,1885/November 18,1962 Nationality: Danish Scientific Theory: Discovered electrons travel in separate orbits around the nucleus while the stay at the surface of an atom. Diagram: Fun Fact:
Was awarded a nobel prize for physics in 1922. GROUP: Aaren and Shubhi Today in class we got a worksheet which would help us develop a better understanding of a series circuit and a parallel circuit, and how they work. These are a series of questions answered by me. Have a good day! PART 1 What can you conclude about what happens to the brightness of the bulbs as you add more bulbs in series? Why do you think this is the case? The more bulbs you add, the more the brightness of the bulbs will decrease due to the battery giving every lode the same amount of energy. If the battery only has 9 volts to start with, it will only be able to distribute that 9. - The sum of the voltages lost on the loads equals the total voltage supplied by the battery As you can see, if you add the two lodes volts together you will be able to get the sum of the batteries volts. - Current measured anywhere in the series circuit will be the same PART 2 What can you conclude about what happens to the brightness of the bulbs as you add more bulbs in parallel? Why do you think this is the case? The brightness remains the same because due to the bulbs being parallel to each other, they get the same amount of volts sent to each other. Prove the following statements using a voltmeter/ ammeter/ resistance measurement in the simulation. Use a screen shots to show your work. - Multiple Pathways For Current To Flow, Adding More Pathways Lowers Resistance. One Pathway - Ω = 9V ÷ 0.9A = 10Ω Two Pathways - Ω = 9V ÷ 1.80A = 5Ω Three Pathways - Ω = 9V ÷ 2.70A = 3.33Ω - Voltage remains the same through each pathway of the parallel circuit In these you can see how the volts stay the same throughout the entire circuit. - Current splits up between the different current pathways In different parts of the circuit, the current is different. CONCLUSION QUESTIONS 1. How does the parallel circuit compare to the series circuit? Series Circuit: Bulbs are dimmer as you add more, current is the same, and voltage is different. Parallel Circuit: Bulbs shine the same brightness, current is different, voltage is the same. 2. What happens when you break a parallel circuit (try it out in the sim if you need to!)? How would this property be useful when designing circuits? If you break a parallel circuit the circuit will still work but only that one bulb that broke is out. This is useful with Christmas lights because before when one light went out, all of them went out, but with parallel circuit, if one goes out all the other ones are still alive. 3. What are the advantages and disadvantages of series and parallel circuits? Series Advantages: - When you add more batteries the light bulb gets brighter. Parallel Advantages: - If a lode breaks, the rest will still work - All the light bulbs have the same brightness at all times. Series Disadvantages: - The light bulbs get less bright when you add more bulbs to the circuit. - The circuit will not work if one part of it goes out. Parallel Disadvantages: - Fires can happen if there are too many batteries. In class today we were supposed to create an electric charge with a certain amount of materials. Materials: • aluminum foil • paper towel • penny • voltmeter • vinegar In the beginning we started off with a dry paper towel, which didn't give us any luck with a electric charge. After trying this twice, my group switched and drenched the paper towel in vinegar. With this we were surprised to see this; As you can see, with the vinegar there was a electric charge. It may not be a lot but you can still see how it works. My inference is, the only reason the electric charge is not to big, is because the acidity of the viegar is too low which makes the electric charge not go to high.
Questions:
In class today, we were told to create 5 demos which represent static electricity. I did 5 different ones which were all successful. Materials:
Experiments:
https://prezi.com/crbpx9h1j10m/static-electricity-lab/ You might need to wait for the videos to load. Enjoy! Questions:
Science Experiment
While being at Bamfield, we looked at many interesting things, but one particular part of the trip made me very interested. On Tuesday, October 6, right after breakfast, we went into the Whale Lab to study invertebrate diversity. This really was cool for me because we humans would not be able to walk if we don’t have our spine. How do these animals walk? An animal, which was really cool, was the hermit crab. These crab find snails shells to live in. Another reason was because I really like Spongebob and Mr. Krabs is a hermit crab. A have created an experiment to test on these awesome animals. Question: How long will it take for a hermit crab to find a shell and crawl in it, if the shell is 10 cm away from the crab in the start? Hypothesis: I feel this crab will be able to do this rather quickly so I believe he/she will be able to do it in under a minute. We watched a video where two hermit crabs were fighting for a shell. They were really fast getting into the shell. Materials:
Procedure: 1. Take a regular looking hermit crab and take it out of its shell 2. Measure where to put the items 3. I will start the timer 4. After doing this once I will wait a day so the hermit crab is fully rested and do it again. To get very detailed information I am going to do it for 3 days. Independent Variable - The crab Dependent Variable - How far the shell is Safety - For the hermit crab’s safety you need to treat it with gentle care so it does not get hurt. Is it ethical? Yes, this experiment is totally ethical. I am not doing anything that will affect the crab in the future or even harming it. |
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May 2016
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