chapter24a - Interactive Learning Toolkit
... domains of the material. A magnetic field can force the domains to line up, and the material itself can become magnetic. (Ex: iron, nickel, cobalt, steel) Paramagnetic materials are weakly attracted to magnets. The atoms of these substances contain electrons most of which spin in the same direction, ...
... domains of the material. A magnetic field can force the domains to line up, and the material itself can become magnetic. (Ex: iron, nickel, cobalt, steel) Paramagnetic materials are weakly attracted to magnets. The atoms of these substances contain electrons most of which spin in the same direction, ...
N2-1,2,3 Study Guide
... Magnet – any material that attracts iron or materials containing iron Magnetic Pole – on of two points, such as the ends of a magnet, that have opposing magnetic qualities Magnetic Force – the force of attraction or repulsion generated by moving or spinning electric charges Magnetic Field – the regi ...
... Magnet – any material that attracts iron or materials containing iron Magnetic Pole – on of two points, such as the ends of a magnet, that have opposing magnetic qualities Magnetic Force – the force of attraction or repulsion generated by moving or spinning electric charges Magnetic Field – the regi ...
Book N Chapter 1 Study Guide 1. Magnet: Material with atomic
... 2. Magnetic Force: The force around a magnet that attracts or repels. 3. Magnetic Field: The energy field that surrounds a magnet. This field is LIMITED based on the size and strength of the magnet. 4. Magnetic Field Lines: Invisible lines that map out where a magnetic field is. Normally they connec ...
... 2. Magnetic Force: The force around a magnet that attracts or repels. 3. Magnetic Field: The energy field that surrounds a magnet. This field is LIMITED based on the size and strength of the magnet. 4. Magnetic Field Lines: Invisible lines that map out where a magnetic field is. Normally they connec ...
Physics: Magnets - John Madejski Academy
... Permanent or Induced Magnets Permanent magnets produce their own magnetic field. Induced magnets are made from magnetic materials (eg. iron, steel, nickel, cobalt). They turn into a magnet when held in a magnetic field. Magnetic materials will always be attracted to a magnet. ...
... Permanent or Induced Magnets Permanent magnets produce their own magnetic field. Induced magnets are made from magnetic materials (eg. iron, steel, nickel, cobalt). They turn into a magnet when held in a magnetic field. Magnetic materials will always be attracted to a magnet. ...
Physical Science Chapter 15 Exam
... Matching: Match the description to the correct term. 12. unlike poles attract, like poles repel 13. Device for protecting buildings and other structures from lightning strikes. 14. Device that produces a strong magnetic field when electricity passes through it 15. Object capable of attracting object ...
... Matching: Match the description to the correct term. 12. unlike poles attract, like poles repel 13. Device for protecting buildings and other structures from lightning strikes. 14. Device that produces a strong magnetic field when electricity passes through it 15. Object capable of attracting object ...
Vocabulary # 1
... Attract: To pull toward one another, as opposite poles of two magnets pull toward one another Repel: To push away, as similar poles of two magnets push away from one another Compass: An instrument that uses a freely moving magnetic needle to indicate direction (needle will point to magnetic north on ...
... Attract: To pull toward one another, as opposite poles of two magnets pull toward one another Repel: To push away, as similar poles of two magnets push away from one another Compass: An instrument that uses a freely moving magnetic needle to indicate direction (needle will point to magnetic north on ...
![L 28 Electricity and Magnetism [5]](http://s1.studyres.com/store/data/001641779_1-6b8ecd251225e13369c1a0c75e33b876-300x300.png)
Magnetism 4 Electromagnets
... Galvanometer Moving coil electric current detector. The amount of deflection of a needle attached to the coil is proportional to the current passing through the coil. ...
... Galvanometer Moving coil electric current detector. The amount of deflection of a needle attached to the coil is proportional to the current passing through the coil. ...
L28
... The strength of the earth’s magnetic field had Decreased10% over the last 150 years. At this rate, the field will disappear altogether in 1,500 to 2,000 years. ...
... The strength of the earth’s magnetic field had Decreased10% over the last 150 years. At this rate, the field will disappear altogether in 1,500 to 2,000 years. ...
Chapter #2 Test Review (Jeopardy)
... A galvanometer uses this to make the relationship between electric current and magnetic fields. ...
... A galvanometer uses this to make the relationship between electric current and magnetic fields. ...
Forces Study Guide: Magnets
... c. Permanent magnets – retain their magnetism (harder to make) d. Temporary magnets – lose their magnetism (easy to create) ...
... c. Permanent magnets – retain their magnetism (harder to make) d. Temporary magnets – lose their magnetism (easy to create) ...
Magnetism_and_Electromagnetism_Review
... Electrons spin in orbit around the nucleus A moving electron produces a magnetic field This movement makes each atom like a tiny bar magnet ...
... Electrons spin in orbit around the nucleus A moving electron produces a magnetic field This movement makes each atom like a tiny bar magnet ...
Magnets
... A Magnet is a special metal that can attract other magnetic metals – they are iron, nickel, cobalt and steel. Most other metals, like aluminium, copper or gold, are not magnetic. Magnet can be made as permanent magnets or temporary magnets. Magnets come with different shapes. Q1. Which are the 3 mag ...
... A Magnet is a special metal that can attract other magnetic metals – they are iron, nickel, cobalt and steel. Most other metals, like aluminium, copper or gold, are not magnetic. Magnet can be made as permanent magnets or temporary magnets. Magnets come with different shapes. Q1. Which are the 3 mag ...
Section Quiz: Magnets and Magnetic Fields
... a. Like poles attract each other, and unlike poles repel each other. b. Like poles repel each other, and unlike poles attract each other. c. Both like and unlike poles can attract and repel each other depending on the surrounding materials. d. none of the above _____ 6. Since more magnetic field lin ...
... a. Like poles attract each other, and unlike poles repel each other. b. Like poles repel each other, and unlike poles attract each other. c. Both like and unlike poles can attract and repel each other depending on the surrounding materials. d. none of the above _____ 6. Since more magnetic field lin ...
Slide 1
... • When the fingers of your right hand curl in the direction of current, your thumb points toward the electromagnet’s north pole. • You can switch the north and south poles of an electromagnet by reversing the direction of the current in the coil. ...
... • When the fingers of your right hand curl in the direction of current, your thumb points toward the electromagnet’s north pole. • You can switch the north and south poles of an electromagnet by reversing the direction of the current in the coil. ...
Magnet
A magnet (from Greek μαγνήτις λίθος magnḗtis líthos, ""Magnesian stone"") is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, and attracts or repels other magnets.A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field. An everyday example is a refrigerator magnet used to hold notes on a refrigerator door. Materials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called ferromagnetic (or ferrimagnetic). These include iron, nickel, cobalt, some alloys of rare earth metals, and some naturally occurring minerals such as lodestone. Although ferromagnetic (and ferrimagnetic) materials are the only ones attracted to a magnet strongly enough to be commonly considered magnetic, all other substances respond weakly to a magnetic field, by one of several other types of magnetism.Ferromagnetic materials can be divided into magnetically ""soft"" materials like annealed iron, which can be magnetized but do not tend to stay magnetized, and magnetically ""hard"" materials, which do. Permanent magnets are made from ""hard"" ferromagnetic materials such as alnico and ferrite that are subjected to special processing in a powerful magnetic field during manufacture, to align their internal microcrystalline structure, making them very hard to demagnetize. To demagnetize a saturated magnet, a certain magnetic field must be applied, and this threshold depends on coercivity of the respective material. ""Hard"" materials have high coercivity, whereas ""soft"" materials have low coercivity.An electromagnet is made from a coil of wire that acts as a magnet when an electric current passes through it but stops being a magnet when the current stops. Often, the coil is wrapped around a core of ""soft"" ferromagnetic material such as steel, which greatly enhances the magnetic field produced by the coil.The overall strength of a magnet is measured by its magnetic moment or, alternatively, the total magnetic flux it produces. The local strength of magnetism in a material is measured by its magnetization.