[PDF] [PDF] Properties of Magnets Worksheet - Flinn Scientific

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Magnets have two poles; the field lines spread out from the north pole and circle back around to the south pole In this activity, you'll watch field lines materialize 

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Draw a magnetic field for each of the following examples A) B) 4 following diagrams correctly represents the magnetic lines of force around a magnet? A) S

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Two other forces which can act in this way are and Magnets have a South Pole and a Pole Magnets create a magnetic around them in which the field lines run

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activity 1 activity 2 worksheets and rubrics Students will be able to detect and draw a magnetic field using compasses 2 these types of magnets on-line, and the text below for more information on cow magnets (PDF format, 205 KB)

[PDF] Properties of Magnets Worksheet - Flinn Scientific

Fill in each circle to indicate the direction of the red tip of the compass needle as the compass is moved around the magnet N S Draw the magnetic field lines of  

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Draw a magnetic field for each of the following examples UN Das 2 one of the following diagrams correctly represents the magnetic lines of force around

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9 mar 2017 · The magnetic field lines spread from the to the Draw the magnetic field using line-of-force representation surrounding the magnet Where the 

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A (+) or (-) alone was stable, and field lines could be drawn around it - Magnets cannot exist as monopoles If you break a bar magnet between N and S poles, you 

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magnetic field in classroom INTRODUCTION In these exercises, you will study the magnetic field of bar magnets and the earth You will draw field lines and 

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force that turns a compass to line up with a magnet: Every magnet sets up a magnetic field in the space FigURe 24 5 Drawing the magnetic field lines of a bar magnet FigURe 24 3 Revealing Exercises 6–11 I Point your right thumb in

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Properties of Magnets Worksheet

Observations

North pole/north pole interactions

South pole/south pole interactions

North pole/south pole interactions

Magnetic Fields

Fill in each circle to indicate the direction of the red tip of the comp ass needle as the compass is moved around the magnet. NS Draw the magnetic field lines of a single permanent magnet. NS Draw the magnetic field lines of the two magnets with north and south poles facing each other. NSNS Draw the magnetic field lines of the two magnets with either north or south poles facing each other. NSNS 2 © 2018 Flinn Scientific, Inc. All Rights Reserved.

Properties of Magnets Worksheet Continued

Magnetic properties of different materials (put a check in the appropriate column):

Magnetic Nonmagnetic

Aluminum foil

Iron nail

Plastic straw

Copper wire

Post-Lab Questions

1. Describe what happens when two identical poles of the bar magnet face ea

ch other. What happens when two opposite poles face each other?

2. What polarity must the red tip of the compass needle be since it points

toward the south pole of the magnet?

3. Draw a picture to show what would happen if a bar magnet was cut into tw

o equal pieces. Label the north and south poles of each “new" magnet.

4. How does the direction of the compass needle change as the compass is mo

ved along a magnetic field line?

5. How do the iron filings align themselves in relation to the magnetic fie

ld? Do the magnetic field lines ever cross?

6. Where is the magnetic field the strongest? How can you tell? Compare the

strength of the magnetic field to the closeness of the magnetic field lines in that region.

7. Is a typical refrigerator door made of iron or aluminum? Explain.

3© 2018 Flinn Scientific, Inc. All Rights Reserved.

Build an Electromagnet Worksheet

Number of paper clips picked up by the electromagnet (with nail core):

Effect on the compass needle.

Number of paper clips picked up by the coil of wire (without nail core):

Effect on the compass needle.

Post-Lab Questions

1. Compare the strength of the electromagnet with the iron nail core to the

one without. Why would an iron core have this effect?

2. Draw the direction of the magnetic

field surrounding the wire loop.

3. Draw the magnetic field lines around the electromagnet.

4. Calculate the magnetic field produced by an electromagnet (solenoid) w

ith 100 loops per centimeter with a current of 1 amp. What is the magnetic field of the same electromagnet with an iron n ail core? (µ o = 4 × 10 -7

T•m/A, magnetic sus-

ceptibility, k, of air and iron is about 1 and 200, respectively.) Curr ent

Curren

t

Soft iron core

CurrentCurrent

4 © 2018 Flinn Scientific, Inc. All Rights Reserved.

Electromagnetic Induction Worksheet

Observed deflection of the compass needle. What movement produces the strongest deflection?

Post-Lab Questions

1. The 60-mL jar with the coiled wire and compass inside is a simple galvan

ometer, or a device that detects very small currents. What property of electric current does this simple galvanomete r detect?

2. The bottle preform with coiled wire and moving magnet is a simple soleno

id. When the magnet moves through the solenoid, a current is produced in the coiled wire which is then detecte d by the galvanometer. Based on your observa- tions, what type of magnet motion produced the most current (the larges t deflection of the compass needle)?

3. As the magnet enters the coil loop from the left, what direction does th

e induced electric current flow in the wire loop?

Indicate the current direction on the figure.

Magnet movesinto closed loop

5© 2018 Flinn Scientific, Inc. All Rights Reserved.

Build a DC Motor Worksheet

Observations

Post-Lab Questions

1. Explain how the DC motor works.

2. What is the purpose of sanding only half the enamel off the ends of the

coil armature?

3. How does the external magnet polarity determine the spin direction?

4. If the coil armature was larger, how would this affect the performance of the motor?

5. If the coil armature had more windings, how would this affect the perfor

mance of the motor?quotesdbs_dbs20.pdfusesText_26