m agnetic or n onmagnetic ?. f irst some review … all matter has measurable physical properties....
TRANSCRIPT
![Page 1: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/1.jpg)
MAGNETIC OR NONMAGNETIC?
![Page 2: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/2.jpg)
FIRST SOME REVIEW…
All matter has measurable physical properties.
Those properties determine how matter is classified, changed, and used.
Magnetism is one physical property of matter.
![Page 3: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/3.jpg)
WHAT IS MAGNETISM? Magnetism is a force of
attraction or repulsion
The force of attraction pulls an object towards the magnet.
The force of repulsion pushes an object away from the magnet.
![Page 4: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/4.jpg)
MAGNETS ARE THE TOOLS USED TO MEASURE MAGNETISM poles – two ends of a magnet
every magnet has two poles north (N) pole south (S) pole
even if you break a magnet in half, each half will have a north pole and a south pole
![Page 5: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/5.jpg)
REMEMBER Unlike poles attract
Like poles repel
But, that only when talking about two magnets.
![Page 6: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/6.jpg)
PROPERTIES OF MAGNETS Why do these magnets appear to “float” in air?
The same poles are facing each other. S
N
N
S
S
N
![Page 7: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/7.jpg)
WHAT MATTER IS MAGNETIC? Metals that contain iron, nickel, and cobalt
are magnetic. In other words, a magnet will pull them.
Not all metals are magnetic.
Aluminum and copper are examples of metals that are NOT magnetic.
![Page 8: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/8.jpg)
What is the ONLY way to tell if an object is magnetic?
Use a magnet.
![Page 9: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/9.jpg)
Magnetite is a special rock that is magnetic.
Why are these nails attracted to the
magnetite?
They are made of iron.
![Page 10: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/10.jpg)
MAGNETS ALSO HAVE A MAGNETIC FIELD
Every magnet has a magnetic field around it. It can be thought of as a line of force running from the north end of the magnet to the south end of a magnet.
Earth’s magnetic field is what causes the needle of a compass to point north and south.
![Page 11: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/11.jpg)
MAGNETIC FIELD LINESField lines come together where the magnetic force is strong, and spread out where it is weak.
In a bar magnet, force field lines spread out from one pole and come together towards the other.
The magnetic force is strongest near the poles where they come together.
![Page 12: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/12.jpg)
![Page 13: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/13.jpg)
Now that you know more
about magnetism, let’s see
if you can find the magnetic
items.
![Page 14: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/14.jpg)
Cobalt drill bits
Magnetic or non-magnetic?
Magnetic
![Page 15: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/15.jpg)
penny
Magnetic or non-magnetic?Not MagneticPennies are made of copper and copper is NOT magnetic.
![Page 16: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/16.jpg)
aluminum
Magnetic or non-magnetic?
Not Magnetic.Remember only iron, nickel, and cobalt are magnetic metals.
![Page 17: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/17.jpg)
Porcelain vase
Magnetic or non-magnetic?
Not Magnetic
![Page 18: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/18.jpg)
MAGNETIC OR NON-MAGNETIC?
Iron filings
Magnetic
![Page 19: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/19.jpg)
Copper wire
Magnetic or non-magnetic?
Not Magnetic
![Page 20: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/20.jpg)
Silver spoon
Magnetic or non-magnetic?
NOT MagneticSilver is Not one of the magnetic metals.
![Page 21: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/21.jpg)
wood
Magnetic or non-magnetic?
Not Magnetic
![Page 22: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/22.jpg)
Magnetic or non-magnetic?
Iron nails
Magnetic
![Page 23: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/23.jpg)
MAGNETIC OR NON-MAGNETIC?
Nickel coins from Denmark
Magnetic
FACT: The nickels made in the United States are not made of nickel – they are made of copper so they are not magnetic.
![Page 24: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/24.jpg)
MAGNETIC OR NON-MAGNETIC?
Paper clips
Trick question – since you don’t know if these paper clips are aluminum or iron, you don’t know if they are magnetic until you put them near a magnet.
![Page 25: M AGNETIC OR N ONMAGNETIC ?. F IRST SOME REVIEW … All matter has measurable physical properties. Those properties determine how matter is classified,](https://reader036.vdocument.in/reader036/viewer/2022062421/56649dd45503460f94acc442/html5/thumbnails/25.jpg)
TALK WITH YOUR GROUP What are the three metals that are
magnetic?
What are two things you know about the poles of a magnet?