To Do List 3/14 Items Needed Textbook Daily Science Journal Notebook Pen or Pencil Paper Agenda Opening: Mini Activator Work Session: Guided Notes Closing: 10 most interesting words Homework: 10 facts about magnetism Chap. 19

Daily Science Question 3/14 Complete the following vocabulary using the Frayer Models: Definition Only (Yes Draw the boxes, you will finish the Frayer Map this week. 1.Magnet 2.Magnetic Pole 3.Magnetic Force 4.Magnetic Field 5.Magnetic Field Lines.

Electricity and Magnetism S8P5. Students will recognize the characteristics of gravity, electricity, and magnetism as major kinds of forces acting in nature. b. Demonstrate the advantages and disadvantages of series and parallel circuits and how they transfer energy. c. Investigate and explain that electric currents and magnets can exert force on each other.

Magnets and Magnetism All magnets have two poles. Magnets exert forces on each other and are surrounded by a magnetic field.

Magnetic Poles What would happen if you dipped a bar magnet into a box of paper clips? The magnetic effects are not the same throughout a magnet.

North Pole and South Pole The pole of a magnet that points to the north is called the magnet’s north pole. The opposite end of the magnet points to the south. It is called the magnet’s south pole. Magnetic poles are always in pairs.

Magnetic Force When you bring two magnets close together, the magnets each exert a magnetic force on the other. The magnetic force is a universal force.

Magnetic Fields A magnetic field exists in the region around a magnet in which magnetic forces can act. Magnetic field lines: The closer together the field lines are, the stronger the magnetic field is.

Materials Matter The Cause of Magnetism Some materials are magnetic. Some are not. For example, a magnet can pick up paper clips and iron nails. But it cannot pick up paper, plastic, pennies, or aluminum foil. What causes the difference? Whether a material is magnetic depends on the material’s atoms.

Non Magnetic Materials In most materials, such as copper and aluminum, the magnetic fields of the individual atoms cancel each other out. Therefore, these materials are not magnetic.

Magnetic Materials Domains are like tiny magnets of different sizes within an object. The arrangement of domains in an object determines whether the object is magnetic.

Types of Magnets Magnets made with these metals have strong magnetic properties and are called ferromagnets. Another kind of magnet is the electromagnet. This is a magnet made by an electric current. An electromagnet usually has an iron core.

Earth is a Magnet

Solenoids A solenoid is a coil of wire that produces a magnetic field when carrying an electric current. The strength of the magnetic field of a solenoid increases as more loops are used.

Electromagnets An electromagnet is made up of a solenoid wrapped around an iron core. As a result, the magnetic field of an electromagnet may be hundreds of times stronger than the magnetic field of just the solenoid.

Turning Electromagnets On and Off Electromagnets are very useful because they can be turned on and off as needed. The solenoid has a field only when there is electric current in it. So, electromagnets attract things only when a current exists in the wire. When there is no current in the wire, the electromagnet is turned off.

Magnets Can Make Electric Currents Moving either the magnet or the wire changes the magnetic field around the wire. So, an electric current is made when a magnet moves in a coil of wire or when a wire moves between the poles of a magnet.

In a Nutshell Magnets affect electric currents and electric currents affect magnets.

Work Session: Mr./Mrs. Magnet Distinguishing characteristics/behaviors His haunts (where he can be found) Any aliases (i.e., lodestone) His atomic “fingerprints”— what he’s made of Disguises (what he might be hiding in—i.e., a speaker, a microphone, et cetera) Students will use their textbook and their notes as resources for this task.

Assignments Due Today Mr. Magnet Most Wanted Comparing Atoms Worksheet Magic Square Worksheet

Closing: Exit Ticket List the 10 most important words for magnetism. Justify why you picked those words.

To Do List Items Needed Textbook Daily Science Journal Notebook Pen or Pencil Paper Agenda Opening: Mini Activator Work Session: Guided Notes Closing: 10 most interesting words Homework: Finish Mr. Magnet Project

Daily Science Question 3/15 A circuit contains four light bulbs. One light bulb goes out but the other three stay lit. This must be a(n) ___________ circuit. a. open b. series c. parallel d. resistant What would happen if you cut a magnet in half? a. The magnet would stop working. b. The magnet would work, but only on one side of each broken piece. c. Two separate magnets would form.

Opening: The Best Question How do magnets do all the crazy things they do? How is it that sometimes they get stuck to each other and other times they push away from one another? What makes magnetism possible in our world? Would magnets work the same way in outer space, on the moon, or another planet? Why or why not? Is there any way to make a magnet more powerful than it already is? If so, how. If not, why not? Is there a way to turn a magnet’s power “off” if you decided to something like that? If so, why or why not? Is it possible to create a magnet out of something that isn’t currently acting like a magnet? If so, how?

Work Session 3/15 Students will rotate to 8 different lab rotations to review electricity and magnetism. Students need to fill out their lab handouts and place them in their blue folders.

Choose one of the following questions to answer as your ticket out the door: 1.How serious would it be if we created a machine that could instantly destroy all magnets or magnetic objects on the earth? What kinds of things might be affected? 2.In comic books and movies, there are often villains and heroes with magnetic powers? What kinds of things could these fanciful individuals do if they really existed? How could they use their abilities for good (or ill)? 3.We often see science fiction movies and books that mention force fields. Do magnets have a force field? If so, how might one look if we could see it?