Difference between revisions of "Electromagnetic induction introduction to electromagnetic induction activity 1"
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Line 23: | Line 23: | ||
#If not attracted by magnet? | #If not attracted by magnet? | ||
#In which direction bar magnet rest when freely suspended it. or magnetic needle or Mariner's compass. | #In which direction bar magnet rest when freely suspended it. or magnetic needle or Mariner's compass. | ||
− | # | + | #Identify the north and south poles of magnet. |
+ | #Does every magnet have a north and south pole? | ||
#Is north-north or south-south attracted? | #Is north-north or south-south attracted? | ||
#Is north-south repelled? | #Is north-south repelled? | ||
#What happened when kept the bar magnet near the magnetic needle or mariner's compass? | #What happened when kept the bar magnet near the magnetic needle or mariner's compass? | ||
− | + | #What happens when we break a magnet in half? | |
+ | #Can you break off just the north (or just the south) end of a magnet? | ||
+ | #What is the strongest pole? | ||
==Evaluation (Questions)== | ==Evaluation (Questions)== | ||
− | + | #If a magnetic needle placed along the north and south pole of a bar magnet as shown in the figure, what is the polarity of the a b c and d. mark 2 | |
[[File:magnet3.jpg|200px]] <br> | [[File:magnet3.jpg|200px]] <br> | ||
*Pole of a ________ *pole of b _______ <br> | *Pole of a ________ *pole of b _______ <br> | ||
*Pole of c _________ *Pole of d _________ <br> | *Pole of c _________ *Pole of d _________ <br> | ||
− | + | #You are in ship at night & have a bar magnet. How do you recognize the east and west direction? <br> | |
+ | #Iron feelings are mix with tea powder? How to separate it quickly? | ||
+ | #Get a ring-shaped magnet and break it with pliers or a tap with a hammer. Try to put it back together. What happens? Why? | ||
+ | 4. | ||
==Question Corner== | ==Question Corner== | ||
#List the properties of magnet. | #List the properties of magnet. | ||
Line 40: | Line 46: | ||
#What are the properties of the magnetic lines of force? | #What are the properties of the magnetic lines of force? | ||
#Draw the direction of magnetic lines of force of a bar magnet. | #Draw the direction of magnetic lines of force of a bar magnet. | ||
+ | #Who discovered magnets? | ||
+ | #Who were the scientists who helped us to understand magnets? | ||
+ | #What is magnetite? | ||
+ | #How does a compass work? | ||
+ | #Who first used a compass? | ||
+ | #What are some uses of magnets? | ||
'''To link back to the topic page''' | '''To link back to the topic page''' | ||
[[Electromagnetic_induction|'''Back''']] <br> | [[Electromagnetic_induction|'''Back''']] <br> |
Revision as of 02:18, 26 August 2014
Activity No # 1 - To check the properties of the magnets
Estimated Time
20 minutes
Materials/ Resources needed
- Magnets
- Magnetic needles with stand
- Mariner's compass
Prerequisites/Instructions, if any
Multimedia resources
Website interactives/ links/ simulations
Goto Magnet & electromagnets simulations
Process (How to do the activity)
Give the magnets to students and check the properties of magnets. Ask the students properties of magnets. Give two magnets and a magnetic needle to students group (4-5students). Tell check the properties of magnets.
Ask magnetic lines of force using phet tool of magnets and electromagnet.
Developmental Questions (What discussion questions)
- What is magnet?
- Is magnet attracts all materials?
- What we say the material which are attracted by magnet?
- If not attracted by magnet?
- In which direction bar magnet rest when freely suspended it. or magnetic needle or Mariner's compass.
- Identify the north and south poles of magnet.
- Does every magnet have a north and south pole?
- Is north-north or south-south attracted?
- Is north-south repelled?
- What happened when kept the bar magnet near the magnetic needle or mariner's compass?
- What happens when we break a magnet in half?
- Can you break off just the north (or just the south) end of a magnet?
- What is the strongest pole?
Evaluation (Questions)
- If a magnetic needle placed along the north and south pole of a bar magnet as shown in the figure, what is the polarity of the a b c and d. mark 2
- Pole of a ________ *pole of b _______
- Pole of c _________ *Pole of d _________
- You are in ship at night & have a bar magnet. How do you recognize the east and west direction?
- Iron feelings are mix with tea powder? How to separate it quickly?
- Get a ring-shaped magnet and break it with pliers or a tap with a hammer. Try to put it back together. What happens? Why?
4.
Question Corner
- List the properties of magnet.
- Why magnetic needle or marine's compass always shows north south direction?
- What are magnetic lines of force?
- What are the properties of the magnetic lines of force?
- Draw the direction of magnetic lines of force of a bar magnet.
- Who discovered magnets?
- Who were the scientists who helped us to understand magnets?
- What is magnetite?
- How does a compass work?
- Who first used a compass?
- What are some uses of magnets?
To link back to the topic page
Back