what are we going to study the week of february 25 to march 2, 2018
SCIENCE: AKS: obtain, evaluate, and communicate information about magnetism and its relationship to electricity
AKS: 2. obtain, evaluate, and communicate information to investigate electricity
I can explain the difference between static electricity and current electricity.
I can gather information from multiple sources.
I can gather information to explain the difference between static and current electricity.
I can design a complete, simple circuit.
I can explain all the necessary components of a complete, simple electric circuit.
I can identify common materials as conductors or insulators of electricity.
I can explain the difference between conductors or insulators of electricity.
I can plan an investigation to determine if a common material is an insulator or conductor of electricity.
I can carry out an investigation to determine if a common material is an insulator or conductor of electricity.
I can explain the function and purpose of an electromagnet.
I can explain the function and purpose of a magnet.
I can gather evidence through an investigation to communicate the difference between an electromagnet and a magnet.
I can construct an argument to communicate the difference in the function and purpose of an electromagnet and magnet.
I can observe the interaction between a magnet and a magnetic object on opposite sides of various materials.
I can explain the effect of a magnetic field.
I can plan an investigation that shows the interaction between a magnet and a magnetic object on opposite sides of various materials.
I can carry out an investigation that shows the interaction between a magnet and a magnetic object on opposite sides of various materials.
VOCABULARY TO KNOW:
electromagnet, magnet, temporary, permanent, magnetism, electricity, magnetic object, magnetic field, static electricity, current electricity, naturally occurring electricity, human-harnessed electricity, simple circuit, components, insulator, conductor
1. Why do things cling?
2. Why do magnets repel and attract?
3. How are electricity and magnetism connected?
4. How does a basic electric circuit work?
5. How are conductors and insulators different?
6. What are the uses of electricity and magnetism in everyday life?
What is electric current/current electricity?
Electrical current is the flow of electrically charged particles through a circuit.
What is static electricity?
Static electricity is the buildup of electrically charged particles on an object or surface.
What are current and static electricity?
Electricity that comes from batteries and a power source, such as televisions, computers, and toasters, is called current electricity. Static electricity happens when two objects rub against each other; electrons transfer and build up on an object causing it to have a different charge from its surroundings. Like shoes rubbing against carpet.
What are magnets?
A magnet is any material that attracts metals containing iron. The atoms forming materials that can be magnetized such as iron, steel, nickel, and cobalt are arranged in small units, called domains. When a potentially magnetic material is placed in a strong magnetic field, the individual domains, which normally point in all directions, gradually swing into the direction of the field. When most of the domains are aligned in the field, the material becomes a magnet.
What is a bar magnet?
A bar magnet is a rectangular object that has a magnetic field. It is usually made of iron or steel. A bar magnet is almost always a permanent magnet, meaning that it will retain its magnetic field for a significant period of time without the use of a supplied electric current.
What are electromagnets?
Electromagnets are best used when very strong magnets are required. Electromagnets are created by placing a metal core (usually an iron alloy) inside a coil of wire conducting an electric current. The electricity in the coil creates a magnetic field. The electromagnet’s strength depends on the strength of the electric current and the number of coils of wire. Its polarity is dependent on the direction of the current flow. When the current is flowing, the core behaves like a magnet, but as soon as the current stops, the magnetic properties are lost. Electric motors, televisions, maglev trains, telephones, computers and multiple other modern devices use electromagnets.
What are the benefits of using an electromagnet?
The biggest advantage that an electromagnet has over a permanent magnet is that an electromagnet may be turned on and off. Electromagnets are very useful in industrial processes and make assembly-line work in most factories possible. Electromagnets are also used in MRI machines, magnetic locks, magnetic sound recording (including computer hard discs, video tapes and cassettes), cell phones, and many types of motors.
How do you increase/decrease the strength of an electromagnet?
An electromagnet will maintain a charge as long as current flows through it. Strengthening the charge is a matter of adjusting the components that enable the charge to flow. There are many factors that affect an electromagnet’s strength. The type and length of the wire that is wrapped around the metal core (the more conducive the wire the stronger the electromagnet), the manner the wire is wrapped (crossing the coils will weaken an electromagnet), and the strength of the battery or power source (the stronger the power source the stronger the electromagnet) being used to create the electric current will all help determine the strength of an electromagnet.
How are electricity and magnetism connected?
Magnets can be made by using electricity and these magnets are called electromagnets. Electromagnets are used when really strong magnets are required. Electromagnets are produced by placing a metal core (usually an iron alloy) inside a coil of wire carrying an electric current. The electricity in the coil produces a magnetic field. Its strength depends on the strength of the electric current and the number of coils of wire. Its polarity depends on the direction of the current flow. While the current flows, the core behaves like a magnet, but as soon as the current stops, the magnetic properties are lost.
What are the uses of electricity and magnetism in everyday life?
Much of what you do every day would not be possible without electricity or magnets. The lights you turned on this morning and the energy you used to make breakfast most likely required electricity. Your refrigerator uses electricity to keep your food fresh and magnets in the door keeps the door shut and the cold inside your refrigerator to conserve electricity. Electric motors, televisions, maglev trains, telephones, computers and many other modern devices use electromagnets.
http://www.explainthatstuff.com/magnetism.html (homework: read article and summarize the most important ideas; be ready to present and share with the class- due FRIDAY, MARCH 2)
https://quizlet.com/16606522/5th-grade-electricity-and-magnetism-flash-cards/ (GO TO QUIZLET, PRACTICE THE VOCABULARY WORDS, TAKE THE TEST, PRINT YOUR RESULTS, OR TAKE A PICTURE AND EMAIL TO MAURICIO_MEDINA@GWINNETT.K12.GA.US-DUE FRIDAY, MARCH 9)YOU CAN USE THE LAPTOPS AT SCHOOL IF YOU HAVE NO COMPUTER AT HOME.
FINAL ASSIGNMENT: DUE APRIL 9, 2018
You are a pioneer in the late 1800s and live in a log cabin on the plains. Electricity has now become available to the region. You have read newspaper articles about an inventor named Edison and his new appliances for the home. Discuss the pros and cons of this technology, and figure out how to safely modify your log cabin to incorporate electricity. Product: You will design and construct a log cabin (shoe box) including the new technology of electricity (simple circuits). You will design a blueprint to scale including a diagram of electrical wiring. Completed designs will demonstrate the use of electric circuits to light the cabin safely.