Magnetism Ch. 12. How does Magnetism Compare to Electrical Charges? Like Charges repel, unlike charges attract Like Poles will repel, unlike poles attract.

Slides:



Advertisements
Similar presentations
Magnets and Electricity
Advertisements

PHYSICS UNIT 8: MAGNETISM
Objectives 1.Understand the motion of charges relative to each other produces a magnetic force. 2.For given situations, predict whether magnets will repel.
Magnetism.
What is Magnetism?.
Magnetism Notes A moving electric charge is surrounded by a magnetic field.
Ch 8 Magnetism.
21.1 Magnets and Magnetic Fields The green magnet and lower red magnet _________ each other. The lower red magnet and the yellow magnet _________each other.
Chapter 21 Magnetism SPS10. Students will investigate the properties of electricity and magnetism. c. Investigate applications of magnetism and/or its.
Magnetism Notes I. Magnetism – refers to the properties and interactions of magnets A. Magnetic force is the interaction between two magnets. A magnet.
MAGNETS AND ELECTROMAGNETISM. MAGNETISM Electric currents or the movement of electrons in an atom will create the property of magnetism in an object What.
Magnets and Electricity
Do Now Write a few sentences to describe the characteristics of magnets that you know?
Magnetism.
Magnetism Opposite poles attract and likes repel
 Content: We will learn about magnetic properties.  Language: We will read new information about the Earths magnetosphere. We will classify prior knowledge.
Electromagnetic Force
Magnetism CH 19. Magnetic Materials Materials that are attracted to magnets are called ferromagnetic Substances that are repelled by magnets are diamagnetic.
Magnets Chapter 8.
Chapter 12.  Magnetic Forces  Produce a magnetic field  Similar to an electric field  Act under similar rules  Strength depends on distance  Like.
Magnetism Chapters 36 & 37. General Info. Moving charges cause magnetism Magnets have magnetic fields around them. (Magnetism acts at a distance. ) Magnets.
Physics 106 Lesson #20 Magnetism: Relay and Buzzer Dr. Andrew Tomasch 2405 Randall Lab
Regents Physics - magnetism
Magnets and Magnetic Fields. Magnets Magnets can be used along with circuits to create an alarm – A magnet can pull a switch closed to complete the circuit,
MAGNETISM AND ELECTROMAGNETISM. Magnetism = the phenomenon of physical attraction for iron observed in magnets, inseparably associated with moving electricity.
Magnets and Magnetism.
Electromagnetism. Magnets Magnets are materials that produce a magnetic field. Magnets can only exert a force on some metals ( iron, cobalt and nickel)
Magnetism (3, Review). Like poles repel Unlike poles attract.
Section 16:1 Magnets and Magnetism Notes. Properties of Magnets Any material that attracts iron or things made of iron is called a magnet. Any material.
Ch Magnetism I. Characteristics of Magnets (p )  Magnetism  Magnetic poles  Magnetic field  Magnetic domain.
MAGNETISM.
Forces: F net causes acceleration. Forces – act at distance F g – attractive btw masses. F e – attractive/repulsive between objects w net charge. F mag.
Magnets and Magnetism Chapter 6 Section 1. Vocab Magnet- any material that attracts iron or materials containing iron. Magnetic Pole- one of two points,
Magnetism. Force Attractions exist between some metals Force is most concentrated at the ends of the metal object Ends are called Poles (North and South)
Magnetic Fields EQ: How does the Earth’s magnetic field compare to that of the fields that surround a magnet and an electromagnet? SPI
Magnets and Magnetic Fields Magnetic Forces. Is the force a magnet exerts on another magnet, on iron or a similar metal, or on moving charges. - acts.
Magnetism What is magnetism? Magnetism is an invisible force seen when all the electrons spin in the same direction. When you bring two magnets together.
Chapter 19 Magnetism and Electromagnetism. Magnets (19.1) 19.1 ► Magnets contain a mineral called “magnetite” also called “lodestones” ► Magnetism= the.
MAGNETISM Section 8.1. Magnetism  Magnetism- the properties and interactions of magnets  Interaction between two magnets, called magnetic force, increases.
Magnets. Magnetic Force Force around a magnet that is felt before magnets touch.
PERMANENT MAGNETS Made from Fe, Co, Ni and some rare earth metals (ferromagnetic material)  In permanent magnets, electron spinning causes magnetic fields.
Physical Science Unit 8: Lesson 6: Magnetism Lesson 7: Electricity and Magnetism Lesson 8: Lab: Motoring On!
Magnets and Magnetism Unit 7, Lesson 4. What are some properties of magnets?  Magnets- describe any material that attracts iron or objects made of iron.
Magnetism. ESSENTIAL QUESTION: HOW DO THE PROPERTIES OF MAGNETS EXPLAIN WHY SOME MATERIALS ARE MAGNETIC AND SOME ARE NOT?
MAGNETISM 1. Magnetic Force 2  Magnetic Force: the force a magnet exerts on either  another magnet  on iron (or similar metal)  on moving charges.
Magnetic Poles – regions of magnets that produce magnetic forces - Magnets have a north and a south pole - the same poles (north and north or south and.
Magnets received their name from “Magnesia” which is a part of present day Greece. Ancient people discovered that certain stones such as magnetite always.
Protons Neutrons Electrons Review: An atom is made up of protons (+ charge) and neutrons ( 0 charge) in a core nucleus and electrons (- charge) in orbit.
Chapter 8, Section 1 Notes MAGNETISM AND ITS USES Magnetism.
MAGNETISM. MAGNETIC FORCES Magnetic force = force a magnet exerts on another magnet, force weakens with square of distance (twice as far, ¼ as much) Magnetic.
Introduction to Physical Science Monday, Wednesday, Thursday Tom Burbine
Do Now Given the following objects, a piece of aluminum foil, a nickel, a plastic figure, a piece of wood, a glass vase, and some paper clips, predict.
Upcoming Deadlines USA Test Prep Activities completed by Tuesday, March 10 Summative Assessment over Electricity and Magnetism on Tuesday, March 10.
MAGNETISM.
Magnets and Magnetism Unit 7, Lesson 4.
Magnets Review.
Magnetism Notes I. Magnetism – refers to the properties and interactions of magnets A. Magnetic force is the interaction between two magnets. A magnet.
Magnets and Electricity
Magnetism.
-FORCE & MOTION.
Magnetic Fields.
Unit 3.1 Magnetism – Part 1.
Chapter 16: Magnetism P Physics Objectives: 1.Describe the behavior of magnets. 2.Inside a magnet. 3.The magnetic field. 4.The link between magnetism.
Notes 8-1: Magnetism.
Magnetism.
Electric force: push or pull between 2 charged particles
Magnetism Chapter 8.
Chapter 21 Magnetism.
The green magnet and lower red magnet attract each other.
9/3/2019 Introduction to Physical Science Monday, Wednesday, Thursday Tom Burbine
Presentation transcript:

Magnetism Ch. 12

How does Magnetism Compare to Electrical Charges? Like Charges repel, unlike charges attract Like Poles will repel, unlike poles attract These forces allow both magnetic poles and electric charges to “line up” with opposite forces—kind of like a force pair

How are they different? Magnetic Poles always come in pairs (like heads and tails on a coin) Electric charges can come in pairs but they can also be separated (protons in the nucleus, electrons outside)

Magnetic Field These are regions of magnetic influence Areas where objects are pulled by a magnetic force Surround an electric field—cannot have one without the other.

What causes Magnetism? It is caused by constant electron motion Electron move in 2 ways (just like the Earth) They spin on their axis (like a top) They revolve around the nucleus

Current Carrying Wire Do wires that carry current have a magnetic field?

You can’t have one without the other By definition, one moving charge makes a magnetic field Therefore, a whole current of electric charges will make a larger magnetic field This magnetic field goes in circles around the wire (see p. 196) If the current changes direction the circles will also change directions

Why are some metals metallic and some not? Depends on magnetic domains (p. 195) If the atoms are aligned they are magnetic If they are not aligned they are not magnetic If a magnet is dropped on a hard floor, what will happen?

Electromagnetic Induction Anytime you change a magnetic force, (distance or strength), you induce an electromagnetic field -Move a magnet closer or further away from an electric current -Or if you change the amount of electric current, an EM field is produced

What is this? Why?

Earth is a giant magnet One end of every magnet will spin to the north if possible. This has been used for over 2,000 years to help guide travelers. A compass is a freely spinning magnet.

William Gilbert Responsible for fine-tuning the idea of a compass in the early 1600s First to suggest that Earth was a magnet. Said the Earth has a giant bar magnet running through its center, and the magnetic poles were near the geographic poles

North or South Pole A compass always points which direction? Doesn’t that mean it should be attracting to it’s opposite pole? So what is actually near the geographic North Pole?

How a compass works A compass needle points north because it is strongly attracted to a magnetic south pole The magnetic poles are not straight up and down, but rather they are tilted See Diagram on Board