What will happen when these magnets are brought close together?
What will happen when these magnets are brought close together?
What happens when two north poles of magnets are placed together?
Two like poles will....
Two unlike poles will....
In a magnetic object, the magnetic domains are aligned.
All metals are magnetic
Draw the field lines between these 2 magnets
The points on a magnet where the force is the strongest.
Magnetic poles that are the same ________________ and opposite magnetic poles ______________________.
What will happen when these magnets are brought close together?
What will happen when these magnets are brought together?
Will these items be attracted to a magnet?
copper wire (NO Battery)
paper clip
rubber ducky
aluminum can
wooden table
iron nail
another magnet
compass needle
glass
paper
yes
no
Which term means "to pull objects closer?"
If you break a magnet in half, each half will have:
Match the magnetic terms and descriptions below.
| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
center of magnet | arrow_right_alt | repel |
iron, nickel, cobalt | arrow_right_alt | attract |
like poles | arrow_right_alt | make up magnetic field |
unlike poles | arrow_right_alt | weakest part |
lines of force | arrow_right_alt | magnetic substances |
Match the magnetic terms and descriptions below.
| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
attract | arrow_right_alt | A magnet is strongest at the ___________. |
magnetic field | arrow_right_alt | One end of a magnet is called the _____________; and the other is called the __________. |
repel | arrow_right_alt | A south pole and south pole, or a north pole and north pole are called ______________. |
north pole; south pole | arrow_right_alt | A north pole and south pole are called _____________. |
poles | arrow_right_alt | Two north poles or two south poles will _______________. |
unlike poles | arrow_right_alt | A north pole and a south pole will _________________. |
like poles | arrow_right_alt | Where the power of a magnet is felt is called its ________________. |
Two unlike poles will....
Why did you choose your answer above?
The student repeated the investigation.
The distances recorded by the student were:
4.0 cm 3.5 cm 4.0 cm 3.5 cm 4.5 cm
Calculate the mean of the distances recorded by the student.
Match each type of error to its description
| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
systematic errors | arrow_right_alt | These cause readings to be spread about the true value, due to results varying in an unpredictable way from one measurement to the next. There errors are present when any measurement is made, and cannot be corrected. The effect of random errors can be reduced by making more measurements and calculating a new mean. |
zero errors | arrow_right_alt | The equipment is not working correctly, or calibrated correctly. These cause readings to differ from the true value by a consistent amount each time a measurement is made. |
random errors | arrow_right_alt | The equipment does not start at zero. Any indication that a measuring system gives a false reading when the true value of a measured quantity is zero, eg the needle on an ammeter failing to return to zero when no current flows. |
Describe how the size of the magnetic force on the pen changed as the pen was moved away from the tablet.
The student used four plotting compasses to show the magnetic field pattern around
the pen.
Figure 11 shows the pen and the outline of the plotting compasses.
Draw one arrow inside each compass on Figure 11 to show which direction the compass needle points.
One arrow has been drawn for you.
Sort the magnetic materials from the non-magnetic materials
Steel
Iron
Aluminium
Gold
Nickel
Copper
Plastic
Cobalt
Zinc
Magnetic
Non-Magnetic
The area around a magnet where it can push and pull is called
Which term means, "the space around a magnet in which magnetic forces can act on objects?"
Figure 1 shows a compass.
Figure 1
Why does the compass always point in the same direction when it is not near a magnet?
What material could the needle of the compass be made from?
A magnet produces a magnetic field.
Which diagram shows the magnetic field pattern around a bar magnet?
A solid rod is placed inside the coil.
Which type of rod would make the magnetic field of the coil stronger?
Tick 1
Check each statement that describes where electricity flows in an
electromagnet. Leave the box blank if the statement does not describe where electricity flows.
What is the invisible area around a magnet that can push or pull objects they are not touching?
Choose two ways that you can make an electromagnet stronger
Which of the following changes will result in a stronger electromagnet?
Manny is investigating factors that affect electric and magnetic forces. He needs to design an experiment to show that objects can exert forces on each other even when they are not in direct contact.
After doing some additional research, Manny decides to make an electromagnet with a battery, some wire, an iron nail, and a switch. He uses a rubber eraser as an insulator to open and close the switch. He uses the electromagnet to see if he can pick up some paperclips.
The diagram shows the setup of Manny’s experiment.
What is one of the benefits of Manny’s electromagnet?
What could Manny do to increase the strength of the electromagnetic force? Highlight all that apply.
What evidence is there that the electromagnet exerts a force on the paper clips, even though they are not touching each other?
The electromagnetic force of the electromagnet (attracts / repels) the paper clips. The paper clips move (toward / away from) the nail.
Directions: Of the word pairs provided below, select the words that make the statements true. The first word is the answer to the first pair and the second word is the answer to the second pair.
Manny detaches the two wires from the battery and reattaches them to the opposite terminals. Explain how this changes the current and magnetic field.
Suppose you pull the paper clips away from the nail. How does the potential energy of the system change?
Figure 2 shows a coil of wire.
There is a current in the coil.
The circles show the position of four compasses.
Figure 2
Which statement describes the magnetic field around the coil?
Choose two ways that you can make an electromagnet stronger
