Periods 3-4, 8-9:
Please check out two videos on magnetism caused by electric currents. One is on Ampere's law, which will be to magnetic fields what Gauss's law is to electric fields. Focus especially on just a single straight wire, and the magnetism that circulates around the current.
The second is on the magnetic forces between two currents; since each wire with current is producing magnetism, then it is like having two magnets. Wires can attract and repel each other, depending on the direction of the current. Assume currents are positive, and we will use the 'curly right hand rule' for wires to figure out which direction the magnetism circulates.
Be sure the simulations are completed and shared. Also, lab groups can work on completing the questions if needed. We will discuss and collect Tuesday.
Period 5:
Be sure your E&M topic research is completed and shared by now, so our eBook can be completed. Also, be sure the Friday videos and questions are completed. We'll go through them tomorrow.
Today, work with a partner on the first two pages of the static electricity packet. Feel free to look up terms as needed on the first page, and if needed to look up materials on the second page. Conductors allow electricity to flow, and insulators do not allow electricity to flow.
Should you have extra time, by all means you can try to work ahead. Or, you can work on other stuff. Thanks!
Monday, February 25, 2019
Tuesday, February 19, 2019
eLearning Friday!
Below are links to use for Friday's virtual class. Do these when convenient, and be sure to email or share your work with Doc V.
For Attendance:
*For the Chem/Phys classes: got word that no name appears for one of the two periods - this should not be an issue for attendance, and is a feature for how the school sets up the gradebook. Even if it shows up next week, it will not be a problem correcting it!
Period 3-4, 8-9:
For magnetic forces, F = qv x B, try two ActivPhysics simulations. These are set up as lessons, so just follow along and type up your responses in a Google Doc that is shared with Doc V at vondracekm@eths202.org.
- Go to Part VI on the home page, which is Electricity & Magnetism. Try 13.4, Magnetic Force on a Particle. You may have to click to enable Adobe Flash Player, but this was working on my Chromebook. Click on the box on the right side to open the simulation, and follow the various questions that will require you to run the simulation. Respond to questions, and write out all responses, explanations, and descriptions that are asked for.
- Then try 13.7, Mass Spectrometer. Same deal, use the simulation of a mass spectrometer to determine isotopes of different elements. Type up responses in your Google Doc, and share both when finished.
For each of these, remember right-hand rule, mv^2/R = qvBsin(theta), and circular motion of the charged particles.
Feel free to watch any parts of Magnetic Storm again or if you were not in class (NOVA video on Earth's magnetic field we saw in class; have those questions in our packet, page 2).
Period 5:
We are starting electricity, and the starting point is electric charge. EVERYTHING in electricity, and magnetism for that matter, starts with electric charge. You are probably most familiar with this from chemistry, in the form of protons and electrons, the positive and negative charges that make up every atom in your body!
Static electricity means stationary charge - charges that just sit on objects. Check out this video on the science of static charge. Take notes and answer the questions on this and the following two videos.
Static charge can build up in clouds, too! Check out a video on how lightning works: take notes and answer the questions you got in class on Wednesday. Here is a short, second video that compliments the first one.
Thanks, and enjoy the weekend!!!
For Attendance:
I got this yesterday, so I was unable to share with you in class. But there is a Google Form at https://docs.google.com/
The assignment, though, can be done at your convenience any time through the weekend!
Period 3-4, 8-9:
For magnetic forces, F = qv x B, try two ActivPhysics simulations. These are set up as lessons, so just follow along and type up your responses in a Google Doc that is shared with Doc V at vondracekm@eths202.org.
- Go to Part VI on the home page, which is Electricity & Magnetism. Try 13.4, Magnetic Force on a Particle. You may have to click to enable Adobe Flash Player, but this was working on my Chromebook. Click on the box on the right side to open the simulation, and follow the various questions that will require you to run the simulation. Respond to questions, and write out all responses, explanations, and descriptions that are asked for.
- Then try 13.7, Mass Spectrometer. Same deal, use the simulation of a mass spectrometer to determine isotopes of different elements. Type up responses in your Google Doc, and share both when finished.
For each of these, remember right-hand rule, mv^2/R = qvBsin(theta), and circular motion of the charged particles.
Feel free to watch any parts of Magnetic Storm again or if you were not in class (NOVA video on Earth's magnetic field we saw in class; have those questions in our packet, page 2).
Period 5:
We are starting electricity, and the starting point is electric charge. EVERYTHING in electricity, and magnetism for that matter, starts with electric charge. You are probably most familiar with this from chemistry, in the form of protons and electrons, the positive and negative charges that make up every atom in your body!
Static electricity means stationary charge - charges that just sit on objects. Check out this video on the science of static charge. Take notes and answer the questions on this and the following two videos.
Static charge can build up in clouds, too! Check out a video on how lightning works: take notes and answer the questions you got in class on Wednesday. Here is a short, second video that compliments the first one.
Thanks, and enjoy the weekend!!!
Tuesday, February 5, 2019
Top 10 Future Energy Sources
Check out this video on one group's choices for the Top 10 future energy sources we humans should be using in the near future! Which one do you find most intriguing/interesting/promising? Do you see any potential problems for any of these?
Sunday, February 3, 2019
Making a 'Breaking News' screenshot
Need a cover page for a report? Or want a creative way to make a series of Breaking News headlines that can be ordered to show the chronology of an event or period of time? Try this breaking news screenshot generator, looks pretty cool!
Friday, February 1, 2019
February 1, 2019
Happy Friday! Some of us are at a contest today, so check out the following:
Period 3-4, 8-9
Be sure to have what you need for the magnet lab, with the exception of #6. If you have not yet done so, turn in the lab. Also turn in the magnetic domain and earth magnetic field sheets in the pack from early this week.
Check out two videos. One is on the earth's magnetic field. The second is on charged particles moving through magnetic fields. The symbol for a magnetic field strength is B, and the unit for magnetic field strength is a Tesla (1 Tesla is a really strong field...our big magnet is a fraction of a Tesla). Take notes on all this. You will start to use cross products as well as right-hand rules to figure out the direction particles get pushed by magnetic forces. Circular motion results from these cross product forces, so work together to try and figure out a few things.
Be sure to get a page with some practice problems from the book. It uses this notion of circular motion of particles in a magnetic field (or B-field). We are using mv^2/R = qvBsin(theta). In many cases the angle between velocity and the B-field will be 90-degrees, so the sine will often be 1.
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Period 5
If your coaster group has not yet shared the summary paper for your coaster, please do so today. We are into energy, and the BIG idea we've been introducing is conservation of energy - perhaps the single most important concept in science, and a reason why we are alive. Energy can transform from one type into another, such as potential energy (due to height) converting back and forth into kinetic energy as something moves up and down hills on a roller coaster, or flies through the air (slows as it rises, with KE => PE; or speeds up as it falls, with PE => KE).
To see examples of the math behind conservation, check out this Khan Academy video on conservation of energy. This one shows basic PE-KE conversions, similar to what you had with your coaster. Remember conservation means "energy can be neither created nor destroyed, just transformed from one type to another" if there is nothing else adding or taking energy away from you (such as someone pushing or pulling an object, and forcing it to speed up or slow down). Do take notes on the video so you have a numerical example of how to deal with conservation.
From the video, then try to complete the conservation of energy sheet you got on Tuesday. Just remember in all the examples shown, the TOTAL energy stays the same, where Total E = PE + KE. Work together and talk things through based on the video example. If you complete it, turn it in before leaving and we will pick this up next week! Thanks!
Period 3-4, 8-9
Be sure to have what you need for the magnet lab, with the exception of #6. If you have not yet done so, turn in the lab. Also turn in the magnetic domain and earth magnetic field sheets in the pack from early this week.
Check out two videos. One is on the earth's magnetic field. The second is on charged particles moving through magnetic fields. The symbol for a magnetic field strength is B, and the unit for magnetic field strength is a Tesla (1 Tesla is a really strong field...our big magnet is a fraction of a Tesla). Take notes on all this. You will start to use cross products as well as right-hand rules to figure out the direction particles get pushed by magnetic forces. Circular motion results from these cross product forces, so work together to try and figure out a few things.
Be sure to get a page with some practice problems from the book. It uses this notion of circular motion of particles in a magnetic field (or B-field). We are using mv^2/R = qvBsin(theta). In many cases the angle between velocity and the B-field will be 90-degrees, so the sine will often be 1.
/
Period 5
If your coaster group has not yet shared the summary paper for your coaster, please do so today. We are into energy, and the BIG idea we've been introducing is conservation of energy - perhaps the single most important concept in science, and a reason why we are alive. Energy can transform from one type into another, such as potential energy (due to height) converting back and forth into kinetic energy as something moves up and down hills on a roller coaster, or flies through the air (slows as it rises, with KE => PE; or speeds up as it falls, with PE => KE).
To see examples of the math behind conservation, check out this Khan Academy video on conservation of energy. This one shows basic PE-KE conversions, similar to what you had with your coaster. Remember conservation means "energy can be neither created nor destroyed, just transformed from one type to another" if there is nothing else adding or taking energy away from you (such as someone pushing or pulling an object, and forcing it to speed up or slow down). Do take notes on the video so you have a numerical example of how to deal with conservation.
From the video, then try to complete the conservation of energy sheet you got on Tuesday. Just remember in all the examples shown, the TOTAL energy stays the same, where Total E = PE + KE. Work together and talk things through based on the video example. If you complete it, turn it in before leaving and we will pick this up next week! Thanks!
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