Magnets: Exploring Magnetic Materials, Magnets and Compass Needle - PDF

Okay, here is the transcription of the images into markdown format. I have tried my best to retain all the information, while also organizing it in a structured manner. ### Page 1 Date: (Blank) Page No.: (Blank) ### Chapter 4: Exploring Magnets **Q:** What is Magnetic materials? **A:** * The m...

Okay, here is the transcription of the images into markdown format. I have tried my best to retain all the information, while also organizing it in a structured manner. ### Page 1 Date: (Blank) Page No.: (Blank) ### Chapter 4: Exploring Magnets **Q:** What is Magnetic materials? **A:** * The materials which are attracted towards a magnet are called magnetic materials. * Examples: 1. Iron 2. Nickel 3. Cobalt and other metals **Q:** "What is Non-magnetic materials? **A:** * The material which are not attracted towards a magnet are called non-magnetic materials. * Examples: 1. Pencil 2. Eraser 3. Wood and other material **Q:** What is Magnetic Needle or Compass Needle? **A:** The compass of the magnetic needle is a device to find out direction, which is used to...(text cut off) ### Page 2 Date: (Blank) Page No.: (Blank) Image showing the directions. * me 8 directions? * ost * est * wth * ith * ith - East * ith - West * eth - West * ith - East A Compass? The image contains a compass with the following labels: * **N**: North * **NW**: Northwest * **W**: West * **SW**: Southwest * **S**: South * **SE**: Southeast * **E**: East * **NE**: Northeast ### Page 3 Date: (Blank) Page No.: (Blank) **Q:** Draw shapes of magnets? **A:** There are mainly 3 types of magnets The page shows drawings of the three types of magnets: * Ring magnet * Bar magnet * U-shaped magnet 1. Ring Magnets 2. U-shaped magnets 3. Bar Magnets Date: 06.11.2024 **Q:** Do all parts of magnets attract magnetic materials equally? **A:** No magnetic material will be attracted (equally). ### Page 4 Date: 06/11/2024 Page No.: (Blank) The page shows a diagram with the following labels: * North pole * South Pole * Bar Magnets **Q:** Can we find a magnet with a single pole? **A:** * It is not possible to obtain a magnet with a single pole. If a magnet is broken into smaller pieces, North and South poles always exist in pairs even in the smaller pieces of magnets. * A single North pole or a South pole cannot exist. **Q:** How can we find direction with the help of a bar magnet? **A:** * Suspend a bar magnet with a thread tied in the middle of the magnet to balance it horizontally. * Rotate the magnet gently in the horizontally direction and let it come to rest. ### Page 5 Date: (Blank) Page No.: (Blank) * Mark the position corresponding to the end of the magnet on the ground. Join these two points on the ground with a line. This line indicates the direction along which the magnet comes to rest. * Again, rotate the magnet by giving a gentle push at its one end and wait till it comes to rest. * Does the magnet rest along the same line? A freely suspended magnet comes to rest.... ### Page 6 Date: (Blank) Page No.: (Blank) Diagram showing the poles of a magnet: * **N** (North) * **S** (South) This is the north pole of magnets or North-seeking pole. **Q:** What is the South pole of a magnet? **A:** The other end that points towards the south direction is called the south-seeker pole or South pole of magnets. Diagram showing the poles of a magnet: * **N** (North) * **S** (South) This is the South pole of magnets or South-seeker pole. ### Page 7 HW Date: 08/11/2024 Page No.: (Blank) **Q/Answers** **Q:** What is Matsya-yantra or Machshh yantra? **A:** A device similar to the compass needle you made (Fig-4.7) was used by Indian navigators at sea. It consisted of a magnetized fish-shaped iron piece, kept in a vessel of oil. It is called Matsya-yantra or Machchh yantra. **Q:** What happens when we bring two magnets closer to each other? **A:** You will see that unlike poles of magnets, that is, the North pole of one magnet and the South pole of the other magnet, attract each other. The image provides two examples to illustrate the concept of attraction and repulsion : **Scenario 1 (Attract):** * Magnet 1: N (top), S (bottom) * Magnet 2: S (top), N (bottom) **Scenario 2 (Repel):** * Magnet 1: N (top), S (bottom) * Magnet 2: N (top), S (bottom) ### Page 8 HW Date 11/11/24 Page No. **Q:** What is Attraction? **A:** That unlike poles of magnets, that is, the North pole and the South pole of another magnet, attract each other. **Q:** What is Repelaction? **A:** The like pole, that is, either the North pole and the South pole of both magnets repel each other. **Q:** The compass needle is a magnet. Will it show the same behavior if a magnet is brought closer to it? **A:** Yes, when the North pole of the magnet is brought closer to the North pole of the compass needle, it moves away as shown. When the South pole of the magnet is brought closer to the North pole of the magnetic compass needle, it....(text cut off) ### Page 9 Date: (Blank) Page No.: (Blank) 2. We place a piece of wood between mpass needle and the magnet and the... Will this affect the deflection of mpass needle? There is no appreciable change in the of the needle when a piece of material is placed beetween magnet and the compass. We can conclude that the magnetic... ### Page 10 Homework Date: 12/11/2024 Page No.:(Blank) Homework: 12/11/2024 **Q2:** Can we take the steel ball out of the maze by moving a magnet below the cardboard tray? **A2:** Yes, the steel ball will be attracted towards the magnet. We can take them out with our hands. **Q:** Can we b ink out a steel baber clib? **A:** (The image contains a demonstration about how to let a steel ball pass a maze by using magnet.) ### Page 11 Date: (Blank) Page No.: (Blank) **A3:** Yes, we will make the portion of a below the glass container and slowly take it upward. The magnetic material will also move upward and come out of water. **Q2:** Will the two cars speed towards each other or run away from each other when brought closer? (Fig 4.14) **A2:** The car runs away from each other when brought closer to each other because same pole (N-N) or (S-S) repel each other. **Q:** Will the two cars speed toward each other or run away from each other when bright closer? **A:**...(text cut off) (The image shows a row of connected cars. The first two cars both contain a front magnet and an open back. After the first two cars, each back of the following cars are attracting the cars behind them.) ### Page 12 Date: (Blank) Page No.: (Blank) **Q:** How to keep the magnet safe? **A:** Magnet says, * "Store me properly. Keep magnets safe in pairs with unlike poles on the same side of non-magnetic material in between. Place two pieces of soft across the end." * Do not heat magnet and drop or hammer them. * Do not keep magnet near mobile phone or remote control. **Caution:** Have fun but treat magnets with care. **Diagram:** * Two bar magnets are aligned with opposite poles facing each other (N and S). * Non-magnetic materials (wood) are separating them * Iron Wire