Category Archives: Uncategorized

Rube Music Player

Posted on by
Reply

Rube Music Player diagram

Step 1. The first step is to drop the ball down the cardboard tube 

Step 2. The second step is the ball hits the first train 

Step 3. The third step is the first train hits the second train 

Step 4. The fourth step is the second train hits a domino making all the dominos fall 

Step 5. The fifth step is the dominos hit the ball over 

Step 6. The sixth and last step is the ball falls down the cardboard tube from the dominos and hits the play button on keyboard  

During the first step, the ball’s gravitational potential energy transforms into rotational kinetic energy as it rolls. A train’s potential energy is also present in the second and third steps until the ball touches train number 1. Train number 1 collides with train number 2, transforming both into kinetic energy. Step four shows the dominos as potential energy until the train hits them, when they become kinetic. Prior to it falling into a tube, the ball has potential energy as well as kinetic energy when it is knocked over by dominoes. In the sixth step, the laptop has electrical and thermal energy, and when the ball hits, it also has sound energy.

The video – http://youtube.com/shorts/As6pYlMfVgY?feature=share

Keep in mind I had no help with the project so the filming is not the greatest.

Self Assessment –

Currents from Kitchen (Plus Pre Lab)

Posted on by
1

Pre lab

Purpose: which fruit will produce the most electric voltage.

Hypothesis: The fruit that will produce the most electric voltage will be a lemon when trying other fruits.

Materials: 1 voltmeter, 2 wires, 1 nail, 1 copper strip, at least 3 fruits

DC Voltmeter - 1002787 - PeakTech - U11811 - Hand-held Analog Measuring Instruments - 3B Scientific

Crocodile Clips Electrical Insulated Wire Multimeter Test Leads Set Alligator Clip Clamps Double Ended Voltage Tester Cable (0.5 Meter/Red & Black): Amazon.ca: Electronics

Iron NAILS, Size: 1 Inch To 4 Inch, Packaging Size: 5 To 25 Kg Bags, Rs 80 /kilogram | ID: 20327500455

Electrode, Copper Strip

I eat 3 or 4 pieces of fruit a day. Now I'm told fruit is not really a good thing to snack on because it's all simple carbs and will turn to

Procedure: Make sure you have the right materials in order to do the experiment. Next put 2 wires on the voltage meter: 3V and +DC. Place copper strip and nail into fruit, +DC goes on copper strip and 3C goes on nail. Check the voltage meter to find how much electric voltage the fruit has. when done with the fruit reapeat 2 more times on different fruits.

Reasoning: The reason I think that the lemon will produce the most electric volts is because of the citric acid.

Lab

Fruits used: plum, apple, nectarine, orange, lemon.

Observations: The more you push down on the fruit , the more voltage charge you get, The voltmeter would not work if the wires weren’t hooked on strongly, even if we just touched the copper and nail to the fruit the voltmeter would change, if you add more nails and copper to the fruit there is more charge.

Results: The more acidic fruits produced more voltage. for example the lemon had 1V of electricity and the orange had .84V but the apple only had .4V  and the plum had .5V. this is because the lemon and orange are more acidic. This is because the citric acid in the fruits is an electrolyte that allows electricity to flow. The orange and lemon just have more citric acid therefore making it have more volts.

Independent variable: the fruit

Dependent variable: voltage

Controlled variables: Type of fruit and fruit size

 

Most important finding: My hypothesis was correct but I didn’t realize how much more electricity the lemon would have over the other fruit.

Conclusion: I was able to get a Electric voltage with each piece of fruit. My hypothesis was correct the lemon had the most electrical voltage. I wonder what would happen if I compared the lemon to a lime.

Questions

what is  causing electrons to flow in this experiment?

The electricity that flows through this experiment is from the chemical reactions going on. The acidic juices from the fruits and the zinc coded nail have a chemical reaction which causes the electrons to flow.

What are the independent, dependent and 2 controlled variables in this experiment?

Independent- the fruit

Dependent- voltage

2 controlled variables- Type of fruit and fruit size

How can we modify our experiments to improve our results?

The way we can modify our experiments to improve our results is 1. upgrade the Equipment. For example when me and my lab partners first tried this experiment nothing happened because the wires were broken. 2. getting more of a variety of fruit like grape fruit and pineapple.

What could be sources of error or uncertainty in our experiment?

Sources of error or uncertainty in this experiment could be the old Equipment not working and us not setting it up correctly.

How can I use this in my everyday life?

You can use this in your everyday life because your getting voltage from that fruit and voltage is used in so many things like phone chargers, fans, electric heaters etc.

 

 

Fictional safety story

Posted on by
1

1) 

 Safety Goggles – To be worn when told to protect your eyes. 

Rubber gloves – To be worn when told to protect your hands. 

Beaker – used to hold different chemicals with a pacific measurement. 

Eyewash station – used to clean out eyes if any chemicals get in them. 

Showerhead – used to wash your whole body off any substances.   

 

2) 

 One day, during science class. We were doing a lab that involves hydrofluoric acid and metal. When we first arrived Mr., Robinson explained the experiment and went over the safety and procedure in case of an emergency. First, we put on our safety goggles and rubber gloves to protect us from any chemicals or materials. We then grabbed the fluorocarbon container instead of a beaker to hold the acid. After that we grabbed a piece of metal to be submerge in the acid. Once we started our experiment, I noticed that there where multiple hazard signs I didn’t know the meaning of. When I dropped the metal into the hydrofluoric acid some of it splashed out onto the desk and into my eyes, so I ran and told the teacher, and I used the eyewash station for 15 minutes and right beside me was this showerhead if you ever got on fire. Mr. Robinson cleaned up the desk cautiously and safely. By the time I got back to my experiment the metal completely dissolved and it was very cool. As we were cleaning up the experiment, I dumped the acid down the sink without any thought and soon released the sink and drainage were made of metal, but it was too late for anything to be done. When I got home from school, I felt Quilty but wanted to study what those hazard signs on the container meant. The next day Mr. Robinson found the disaster and gave us a lecture on how much money it was going to cost to get it fixed and why it was dangerous not to tell him. I still have not confessed because I didn’t want my parents to know about it and I didn’t want them to be charged for the damage, but I really wanted to confess and get it off my chest.     

 

3) 

  1. What is this symbol’s definition: Flame inflammable materials or substances that can self ignite when exposed to water or air, or which emit flammable gas.
  2. What is this symbol’s definition: Environment chemicals toxic to the environment and wildlife
  3. What is this symbol’s definition: Image result for consumer hazard symbols chemicals with explosive properties
  4. What is this symbol’s definition: Image result for consumer hazard symbols  substances that are harmful to humans if they are inhaled, ingested or they encounter skin. 

 

4) 

 The ethical Delima a chose was should we colonize other planets. If we colonize another planets human might mess it up. For example, say there’s other life on that planet and we kill them just because we pass on disease to them our immune system can handle but there’s can’t. But on the other hand, our planet isn’t going to last forever, and we will need to colonize another planet for

 

5) 

Fume hood – room 203 

Emergency shower – room 201 

First aid attendant – Mr. Colombo (room 119), Mr. Barazzual (portable 1) 

Fire alarm – near stairs 

Posted on by
1

 

Climate Change in the Yukon Tundra

A warmer climate could seriously change tundra landscapes and what species are able to live in them. Releasing methane from permafrost feeds the thawing cycle which changes soil temperature and prevent snow from reflecting out heat. Air pollution also affects the tundra environments. A recent study found that Arctic clouds are sensitive to air pollution, which causes clouds to form and that creates a sort of blanket effect. Another effects of air pollution are combustions settling on snow, making it harder to reflect sunlight and causing faster melting. The oil, gas, and mining industries also play a part in climate change. Drilling wells can thaw permafrost, construction can damage soil and prevent vegetation from returning. in the 1980s, an oil and gas testing company left tracks on the tundra that are still visible decades later. With all these activities causing climate change, it may seem as if we have no hope but if  we start to stay away from fossil fuels and put in place protections for certain species and regions while limiting or banning industrial activity the Yukon tundra climate want have to face the drastic impacts of climate change