Non-Contact Forces Apply
Show What You Know
Use your knowledge about electric force, magnetic force, and electromagnetic induction to complete the activity.
Many of the devices used in our world are powered by electromagnetic induction. Some types of trains, generators, flashlights, and motors use electromagnetic induction to provide energy for the device. One of the most common devices to use electromagnetic induction is the credit card reader. The back of a credit card has a strip of magnets in a thick black line. So, what must be in the credit card machine?
Think about the important concepts of non-contact forces you have learned in this unit, and how these topics are related to one another. This includes electric force, magnetic force, and electromagnetic force. Make a list with each force, including a definition of the force and a real-life example where this force would occur. You may have to do some research on real-world examples. Present your list verbally or in writing. Be sure to support your ideas with evidence, including what you learned in this unit.
The sample work is a short 3-4 sentence reflection of your notes from throughout the unit. You can include vocabulary terms that you have learned, and any other relevant information you have taken away from this unit. You may submit this assignment as a Word doc. or Google doc. attached to the lesson submission page. You may use bullet points in order to list your notes, or you may present them as one paragraph. Please use complete sentences and correct punctuation in your response. You may use the questions asked within the sample work lesson as guidelines for information that you might include in your submission.
- Electric force is a non-contact force that exists between two charged objects. An example of electric force is the attraction between positive and negative charges in a battery, which allows electricity to flow.
- Magnetic force is a non-contact force that acts on magnetic materials and moving charges. An example of magnetic force is the interaction between a magnet and a paperclip, causing the paperclip to be attracted to the magnet.
- Electromagnetic induction is the process of creating a current in a circuit by changing the magnetic field around the circuit. A real-life example of electromagnetic induction is how a credit card reader works. The magnets on the back of a credit card induce a current in the machine, allowing it to read the information on the card.
Throughout this unit, I have learned about the different types of non-contact forces and how they are related to each other. Electric force, magnetic force, and electromagnetic induction all play a role in the functioning of various devices and technologies in our world. Understanding these forces helps us to design and improve technology for everyday use.