6 Magnetism Flashcards
What are the ends of a bar magnet called?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/493/q_image_thumb.jpg?1527660056)
north pole
and
south pole
Where is the magnetic field the strongest around this bar magnet?
How can we tell this from the magnetic field lines?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/494/q_image_thumb.jpg?1527660131)
Magnetic field is strongest at the poles
because
Field lines are close together indicating a stronger field.
How can you create a uniform field using two bar magnets?
Place the N pole of one magnet facing the S pole of the other.
Move them so that they are close but not touching
There is a uniform field between the poles
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/495/a_image_thumb.png?1527660380)
Describe the magnetic field created when the N-pole of one bar magnet is near the S-pole of another.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/496/q_image_thumb.png?1527660482)
Uniform field
Magnetic field lines are parallel AND evenly spaced
What is a magnetic field?
A region of space where a magnetic material experiences a force.
Draw an attracting field between a North and South pole.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/511/a_image_thumb.png?1527662252)
Draw a repelling field between two N-poles
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/512/a_image_thumb.png?1527662327)
Name a metal which is magnetically hard.
Steel
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/500/a_image_thumb.png?1527662207)
Name a metal which is magnetically soft
iron
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/501/a_image_thumb.png?1527662218)
What is the point called between two N-poles of a magnet where their magnetic field cancels?
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/502/q_image_thumb.png?1527660623)
neutral point
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/502/a_image_thumb.jpg?1527662153)
What is the law of magnetism?
Like poles repel
Unlike poles attract
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/503/a_image_thumb.jpg?1527661035)
What is the difference between the domains in a magnetically hard material and a magnetically soft material?
Magnetically hard- difficult for domains to align in a field (also difficult for domains which are lined up to de-align)
Magnetically soft- easy for domains to align in a magnetic field and then de-align when field is removed.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/504/a_image_thumb.png?1527662189)
What is a permanent magnet made of? Magnetically hard material or magnetically soft?
Magnetically hard- so that it does not lose its magnetism easily
How can you observe THE SHAPE of a magnetic field around a magnet?
- Pace paper over top the magnet
- Sprinkle iron filing on the paper
- Tap the paper to help the iron filings line up in the field
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/506/a_image_thumb.jpg?1527661018)
What happens when an iron nail is brought near the N Pole of a magnet.
The nail is attracted to the N-pole
A magnetism is induced in the nail because it is made of iron.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/276/107/507/a_image_thumb.jpg?1527661559)