Magnets
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Magnets were first discovered naturally occurring in magnetite by ancient Greeks. A shepherd named Magnes found his shoe nails stuck to a rock containing magnetite. Magnets come in different shapes, sizes and strengths and are typically made of iron, nickel and steel. They are used to pick up or pull other ferromagnetic materials and have various uses around the home and workplace such as holding sewing pins, powering electric can openers, and attaching items to refrigerators.
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Inside A Magnet
The document discusses magnetism at the atomic level. It explains that magnetic domains are groups of atoms whose magnetic fields are aligned, allowing some materials to become magnetized when most or all domains are similarly oriented. It provides examples of ferromagnetic materials like iron and cobalt that strongly exhibit magnetism due to aligned domains. Magnets can be made by placing unmagnetized ferromagnetic materials in strong magnetic fields or by rubbing them with magnet poles, and can be destroyed by impacts, heating, or breaking them into smaller magnet pieces.
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This document discusses the many uses of magnets, including holding objects together, in electrical appliances, in compasses to show direction, as electromagnets to lift iron and steel objects, in computer disks and tapes to store information, and to separate iron objects from trash. It encourages checking one's home for items containing magnets and provides websites for more information on magnets.
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This document provides information and guidance about factors that determine the cost of printing. It discusses final trim size, page count, paper type and weight, quantity being printed, binding style, coatings, shipping details, and other considerations. Key factors that determine cost include page count, paper weight, bindings, and coatings. The document recommends getting samples and multiple price options to choose the best value for the specific printing project.
COT SCIENCE.pptx
The document outlines a science lesson on magnets, including objectives to identify objects attracted to magnets, state the importance of magnets, and participate in a group activity. It discusses the origins of magnets and how the first magnet was discovered by a shepherd named Magnes. The lesson includes activities where students identify objects attracted to magnets, draw objects from home or class attracted to magnets, and answer questions about magnetic materials like iron, nickel, and cobalt.
Magnet, it's discovery and magnetic poles.pptx
1) The document discusses the discovery of magnets by a shepherd named Magnes in ancient Greece, after his iron stick and nails in his sandal were attracted to a rock, which was later named magnetite after him.
2) Magnets have two poles, with the more intense part called the pole, and they always face in a north-south direction. The same poles of a magnet repel each other, while opposite poles attract.
3) When a magnet is broken into two pieces, each piece will have its own north and south pole. Opposite poles will attract each other, while same poles will repel.
Fun with magnets
A Greek shepherd named Magnes discovered magnets in ancient times when he found that nails in his shoes and the tip of his stick were attracted to stones in the ground while digging. Magnets attract certain materials like iron, nickel, and cobalt that are called magnetic materials. All magnets have two poles - a north pole and a south pole - and can attract or repel other magnets depending on which poles are interacting. Magnets are now used for many purposes like refrigerator door closures and magnetic pins or stickers.
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Magnets have two poles, north and south, and exhibit several key properties:
1) Like poles repel and unlike poles attract.
2) A freely suspended magnet will align itself north to south due to Earth's magnetic field.
3) Materials such as iron are attracted to magnets due to magnetic induction, the process by which a nearby magnet causes the material to take on its own magnetic properties.
Chapter 11-Fun with Magnets
The document discusses magnets and magnetic materials. It defines a magnet as an object that attracts magnetic materials like iron, nickel, and cobalt. It describes how magnets were first discovered by an ancient Greek shepherd and outlines the different types of natural and artificial magnets. The document explains that magnets have north and south poles and that like poles repel while unlike poles attract. It also discusses how magnets are used in compasses to find directions and how to make your own magnet by rubbing an iron piece with a permanent magnet. Finally, it provides tips for properly storing bar and horseshoe magnets.
Recommended
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The document discusses magnetism at the atomic level. It explains that magnetic domains are groups of atoms whose magnetic fields are aligned, allowing some materials to become magnetized when most or all domains are similarly oriented. It provides examples of ferromagnetic materials like iron and cobalt that strongly exhibit magnetism due to aligned domains. Magnets can be made by placing unmagnetized ferromagnetic materials in strong magnetic fields or by rubbing them with magnet poles, and can be destroyed by impacts, heating, or breaking them into smaller magnet pieces.
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This document discusses the many uses of magnets, including holding objects together, in electrical appliances, in compasses to show direction, as electromagnets to lift iron and steel objects, in computer disks and tapes to store information, and to separate iron objects from trash. It encourages checking one's home for items containing magnets and provides websites for more information on magnets.
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This document provides information and guidance about factors that determine the cost of printing. It discusses final trim size, page count, paper type and weight, quantity being printed, binding style, coatings, shipping details, and other considerations. Key factors that determine cost include page count, paper weight, bindings, and coatings. The document recommends getting samples and multiple price options to choose the best value for the specific printing project.
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The document outlines a science lesson on magnets, including objectives to identify objects attracted to magnets, state the importance of magnets, and participate in a group activity. It discusses the origins of magnets and how the first magnet was discovered by a shepherd named Magnes. The lesson includes activities where students identify objects attracted to magnets, draw objects from home or class attracted to magnets, and answer questions about magnetic materials like iron, nickel, and cobalt.
Magnet, it's discovery and magnetic poles.pptx
1) The document discusses the discovery of magnets by a shepherd named Magnes in ancient Greece, after his iron stick and nails in his sandal were attracted to a rock, which was later named magnetite after him.
2) Magnets have two poles, with the more intense part called the pole, and they always face in a north-south direction. The same poles of a magnet repel each other, while opposite poles attract.
3) When a magnet is broken into two pieces, each piece will have its own north and south pole. Opposite poles will attract each other, while same poles will repel.
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A Greek shepherd named Magnes discovered magnets in ancient times when he found that nails in his shoes and the tip of his stick were attracted to stones in the ground while digging. Magnets attract certain materials like iron, nickel, and cobalt that are called magnetic materials. All magnets have two poles - a north pole and a south pole - and can attract or repel other magnets depending on which poles are interacting. Magnets are now used for many purposes like refrigerator door closures and magnetic pins or stickers.
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Magnets have two poles, north and south, and exhibit several key properties:
1) Like poles repel and unlike poles attract.
2) A freely suspended magnet will align itself north to south due to Earth's magnetic field.
3) Materials such as iron are attracted to magnets due to magnetic induction, the process by which a nearby magnet causes the material to take on its own magnetic properties.
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The document discusses magnets and magnetic materials. It defines a magnet as an object that attracts magnetic materials like iron, nickel, and cobalt. It describes how magnets were first discovered by an ancient Greek shepherd and outlines the different types of natural and artificial magnets. The document explains that magnets have north and south poles and that like poles repel while unlike poles attract. It also discusses how magnets are used in compasses to find directions and how to make your own magnet by rubbing an iron piece with a permanent magnet. Finally, it provides tips for properly storing bar and horseshoe magnets.
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This document summarizes different types of magnets and how they were discovered. There are four main types of magnets: horseshoe, bar, cylindrical, and ball-ended. Magnets produce invisible magnetic fields that attract ferromagnetic materials like iron. Permanent magnets are objects made of magnetized materials that create their own persistent magnetic fields, like refrigerator magnets. Ferromagnetic materials like iron, nickel, and cobalt are strongly attracted to magnets.
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Magnets were first discovered around 4,000 years ago by a Greek shepherd named Magnets. Magnets can attract some metals but repel other magnets. They have two poles, a north and a south pole, and opposite poles attract while like poles repel each other due to magnetic forces. Magnets are used in many electronic devices and technologies to perform functions like generating motion or sorting recycled metals.
magnetismpptforomp-200507100310.pptx
An ancient shepherd named Magnets discovered magnetism when the nails in his shoes and the tip of his staff became stuck to a large black rock in Magnesia, Greece around 4,000 years ago. This rock was later named magnetite. Magnetism is the force of attraction or repulsion between magnetic materials due to the arrangement of electrons in their atoms. Magnets have several properties: they attract iron, point north-south when suspended freely, poles of the same type repel while opposite poles attract, and they can magnetize other iron pieces when rubbed against them.
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The document discusses the properties and uses of magnets. It describes several experiments that can be done to observe how magnets attract and repel different objects. It also explains key magnetic concepts like poles, magnetic fields, and how compasses detect the Earth's magnetic field. Permanent and temporary magnets are defined, and examples of how magnets are used in technology and medicine are provided.
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1. The document summarizes an experiment on magnetism conducted with primary school students. It explores the properties of magnets and magnetic materials through hands-on activities and observations.
2. Key findings include that iron, steel, and nickel are magnetic, while the strength of magnetism depends on the type of magnet. Magnetic poles of unlike names attract, while like poles repel.
3. The earth itself behaves like a large magnet, with magnetic north and south poles that cause compasses to point north-south and align the direction of homemade compasses.
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The document discusses the history and scientific understanding of magnetism. Some key points:
- Magnetism was first observed in lodestone, an iron-rich mineral, as early as 600 BC. The Greeks discovered it could attract iron.
- In the 16th-17th centuries, William Gilbert systematically studied magnetism and discovered the Earth acts as a weak magnet. Later, Gauss conducted theoretical studies of the Earth's magnetism.
- In the 18th century, Coulomb established the inverse square law governing magnetic force between objects. Oersted discovered a link between electricity and magnetism, studied further by Ampere and Faraday.
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1) The document discusses different types of magnets including horseshoe, bar, U-shaped, and ring magnets. It also discusses factors that affect magnetic properties like heat and pressure.
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3) Proper storage of magnets involves keeping bar magnets separated with wood and placing an iron piece across horseshoe magnets. Magnets should also be kept away from electronic devices.
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Magnetism is the ability of magnets to attract certain substances like iron. A shepherd named Magnes discovered magnetism when his iron stick got stuck to a stone on the ground. There are natural magnets found in nature called lodestones and artificial magnets that are magnetized artificially. Magnets have a magnetic field and properties like having two poles, attracting magnetic materials, and aligning in the north-south direction when suspended. Magnets are used for compasses, motors, speakers and lifting heavy loads. They can lose their magnetism through heating, hammering or improper storage.
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Magnets exert a force called magnetism that can attract or repel other magnetic materials like iron and steel. This magnetic force creates an invisible magnetic field around the magnet where its effects can be detected. Common examples of where magnets are used include compasses, appliances with electric motors, credit cards with magnetic strips, and medical devices.
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This document discusses magnetic fields and magnets. It begins by providing a brief history of magnetism, noting that magnetic phenomena were first observed over 2500 years ago. It then introduces the concept of magnetic fields, explaining that magnets attract ferromagnetic materials like iron and have both north and south poles. The document states there are six common types of magnets and explains the two fundamental laws of magnetism - that like poles repel each other while opposite poles attract. It concludes by noting that the Earth itself acts like a large bar magnet, with its south magnetic pole located near its north geographic pole.
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This document summarizes different types of magnets and how they were discovered. There are four main types of magnets: horseshoe, bar, cylindrical, and ball-ended. Magnets produce invisible magnetic fields that attract ferromagnetic materials like iron. Permanent magnets are objects made of magnetized materials that create their own persistent magnetic fields, like refrigerator magnets. Ferromagnetic materials like iron, nickel, and cobalt are strongly attracted to magnets.
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Magnets were first discovered around 4,000 years ago by a Greek shepherd named Magnets. Magnets can attract some metals but repel other magnets. They have two poles, a north and a south pole, and opposite poles attract while like poles repel each other due to magnetic forces. Magnets are used in many electronic devices and technologies to perform functions like generating motion or sorting recycled metals.
magnetismpptforomp-200507100310.pptx
An ancient shepherd named Magnets discovered magnetism when the nails in his shoes and the tip of his staff became stuck to a large black rock in Magnesia, Greece around 4,000 years ago. This rock was later named magnetite. Magnetism is the force of attraction or repulsion between magnetic materials due to the arrangement of electrons in their atoms. Magnets have several properties: they attract iron, point north-south when suspended freely, poles of the same type repel while opposite poles attract, and they can magnetize other iron pieces when rubbed against them.
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The document discusses the properties and uses of magnets. It describes several experiments that can be done to observe how magnets attract and repel different objects. It also explains key magnetic concepts like poles, magnetic fields, and how compasses detect the Earth's magnetic field. Permanent and temporary magnets are defined, and examples of how magnets are used in technology and medicine are provided.
M A G N E T I S M
1. The document summarizes an experiment on magnetism conducted with primary school students. It explores the properties of magnets and magnetic materials through hands-on activities and observations.
2. Key findings include that iron, steel, and nickel are magnetic, while the strength of magnetism depends on the type of magnet. Magnetic poles of unlike names attract, while like poles repel.
3. The earth itself behaves like a large magnet, with magnetic north and south poles that cause compasses to point north-south and align the direction of homemade compasses.
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Magnets have north and south poles that attract or repel each other. Like poles repel while opposite poles attract. Magnets can attract certain metals like iron and steel. The magnetic force is invisible but can be detected using a compass. Magnets are found in many devices like computers, engines, and MRI machines. The Earth itself acts as a large magnet which allows compasses to point north.
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The document discusses the history and scientific understanding of magnetism. Some key points:
- Magnetism was first observed in lodestone, an iron-rich mineral, as early as 600 BC. The Greeks discovered it could attract iron.
- In the 16th-17th centuries, William Gilbert systematically studied magnetism and discovered the Earth acts as a weak magnet. Later, Gauss conducted theoretical studies of the Earth's magnetism.
- In the 18th century, Coulomb established the inverse square law governing magnetic force between objects. Oersted discovered a link between electricity and magnetism, studied further by Ampere and Faraday.
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Magnetism is a force of energy that causes magnets, which are made of iron or steel, to attract or repel other magnetic materials like iron, nickel, and cobalt. There are two main types of magnets - permanent magnets that cannot be demagnetized and temporary or electromagnets that are powered by electricity and can be turned on and off. Magnets have many uses like in motors, speakers, refrigerators and more, making modern life easier.
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Magnetism is a force of energy that causes magnets, which are made of iron or steel, to attract or repel other magnetic materials like iron, nickel, and cobalt. There are two main types of magnets - permanent magnets that cannot be demagnetized and temporary or electromagnets that are powered by electricity and can be turned on and off. Magnets have many uses like in motors, speakers, refrigerators and more, making modern life easier.
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a complete dscription about the types uses and properties of metal in details...... a small 7 slide ppt in which all slides are the best from each oher.......... hope will like my presentation
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1) The document discusses different types of magnets including horseshoe, bar, U-shaped, and ring magnets. It also discusses factors that affect magnetic properties like heat and pressure.
2) Magnets can lose their magnetic properties if they are heated, hammered, or dropped from certain heights because this disrupts the arrangement of poles. However, it is possible to remagnetize some magnets.
3) Proper storage of magnets involves keeping bar magnets separated with wood and placing an iron piece across horseshoe magnets. Magnets should also be kept away from electronic devices.
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Magnetism is the ability of magnets to attract certain substances like iron. A shepherd named Magnes discovered magnetism when his iron stick got stuck to a stone on the ground. There are natural magnets found in nature called lodestones and artificial magnets that are magnetized artificially. Magnets have a magnetic field and properties like having two poles, attracting magnetic materials, and aligning in the north-south direction when suspended. Magnets are used for compasses, motors, speakers and lifting heavy loads. They can lose their magnetism through heating, hammering or improper storage.
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Magnets exert a force called magnetism that can attract or repel other magnetic materials like iron and steel. This magnetic force creates an invisible magnetic field around the magnet where its effects can be detected. Common examples of where magnets are used include compasses, appliances with electric motors, credit cards with magnetic strips, and medical devices.
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This detailed lesson plan outlines a science lesson on magnetism for 4th quarter students. The objectives are for students to define concepts of magnetism, understand its history, and apply properties of magnets. The lesson includes reviewing a previous topic, motivating students with a video on compasses, an activity to observe magnet properties in groups, explanations of key concepts like poles and magnetic materials, and a concluding assignment on magnetic fields and forces.
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This document discusses magnetic fields and magnets. It begins by providing a brief history of magnetism, noting that magnetic phenomena were first observed over 2500 years ago. It then introduces the concept of magnetic fields, explaining that magnets attract ferromagnetic materials like iron and have both north and south poles. The document states there are six common types of magnets and explains the two fundamental laws of magnetism - that like poles repel each other while opposite poles attract. It concludes by noting that the Earth itself acts like a large bar magnet, with its south magnetic pole located near its north geographic pole.
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- 1. MAGNETS Done by:WinnieChia 4-Excellence
- 2. Who invented magnets? The first magnets were not invented, but rather were found from a naturally occurring mineral called magnetite. Traditionally, the ancient Greeks were the discoverers of magnetite. There is a story about a shepherd named Magnes whose shoe nails stuck to a rock containing magnetite
- 3. About magnets A magnet is an object that can be found in a variety of shapes, sizes and strengths. A typical magnet consists of iron, nickel and steel. Its use is to pick up or pull items that are made of the three same materials. Magnets are wonderful things and come in handy in lots of ways around the house and workplace. Objects that are brought together by magnets require having the same properties.
- 4. What are the use of magnets? At home we use magnets to hold things up or to pick up small things: Some examples of this are: sewing pins electric can openers Magnets can hold things to the refrigerator.
- 5. Hope you have learn more about magnets after listening to my slides!