/ I / the Phenomenon |
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Magnets can be used to design solutions to many problems.
[CER] DISCUSSION QUESTION:
Can problems with transportation today be solved with magnetic forces? Make a claim then gather evidence to support and justify your claim throughout this lesson. |
/ Ii / Investigate
1. Magnificent Motors - use electric and magnetic forces to build a working motor.
2. Circuit Circus - solve problems using electric circuits. 3. Create a latch 4. Have two objects move without touching 5. Create a temporary magnet 6. Electromagnet Magic - solve a problem using an electromagnet. 7. Oil Spills - decide if Dr. Warner’s solution could be used to collect a lot of oil in the ocean. |
Keep the light on by applying scientific ideas about magnetic and electric forces.
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Circuit Construction kit: DC GUIDE
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/ Iii / Level Up!
During this lesson you will learn more about the underlying forces that explain the variety of interactions we observed between objects.
✎Notes:
- Objects in contact exert forces on each other (friction, elastic pushes and pulls).
- Electric, magnetic, and gravitational forces between a pair of objects do not require that the objects be in contact—for example, magnets push or pull at a distance.
- The sizes of the forces in each situation depend on the properties of the objects and their distances apart and, for forces between two magnets, on their orientation relative to each other.
- The gravitational force of Earth acting on an object near Earth’s surface pulls that object toward the planet’s center.
/ IV / choose your path
FREE PLAY [+1 point]
Reflect on this topic any way you wish. NOVICE [+2 points]
Using the simple explanation of a generator video, draw and explain how a generator produces electricity using magnets. ACCOMPLISHED [+3 points]
Draw and describe how you could construct a latch to lock and unlock a door using magnets. ADVANCED [+4 points]
Research, draw and describe how an electric motor works using magnets. EXPERT [+5 points]
Using the video, "How do Electric Vehicles Work? Electric Vehicles Explained" evaluate whether or not electric cars can solve the problems with transportation today. In your answer, describe the criteria (desirable features) for transportation for the future and describe the constraints (limits) such as cost, time, and materials electric cars may have. |
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/ V / Knowledge Check
There is an enormous demand for transportation. Yet transportation systems today have proven to have serious negative side effects. Emissions from the combustion of fossil-derived fuels have contributed to degraded air quality, as well as a changing climate. Cars and other transportation systems also lead to noise pollution, water pollution, and the destruction of many ecosystems. With the continuous growth of the human population and the need for reliable transportation the future of transportation may be critical to future of the human race.
Scientific discoveries often lead to new and improved technologies, which are developed through the engineering design process. Maglev train systems for example use powerful electromagnets to float the trains over a guideway, instead of the old steel wheel and track system. A system called electromagnetic suspension suspends, guides, and propels the trains. A large number of magnets provide controlled tension for lift and propulsion along a track.
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✓ MASTERY CHECK
National Research Council 2012. A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas. Washington, DC: The National Academies Press. https://doi.org/10.17226/13165
This site contains original content that may not be authorized for use by the creator and is legally used under the fair use principles section 107 of the Copyright Act of 1986 (17 U.S. Code § 107)
The official NGSS website. https://www.nextgenscience.org
PS2.B, 3-PS2-4
Define a simple design problem that can be solved by applying scientific ideas about magnets. (Engineering and Technology) [3-PS2-4]
This site contains original content that may not be authorized for use by the creator and is legally used under the fair use principles section 107 of the Copyright Act of 1986 (17 U.S. Code § 107)
The official NGSS website. https://www.nextgenscience.org
PS2.B, 3-PS2-4
Define a simple design problem that can be solved by applying scientific ideas about magnets. (Engineering and Technology) [3-PS2-4]