Hi, brilliant powerpoints, well done! I thought you might like this drawing of magnetite, by James Sowerby (http://www.minrec.org/artwork.asp?cat=1&artistid=42) from the Natural History Museum art library: http://piclib.nhm.ac.uk/popuppreview.asp?image=035567 People think of Dippy the Dinosaur http://www.nhm.ac.uk/kids-only/at-museum/star-attractions/diplodocus/index.html but often they don't know how much art is here! It is important because artists had to record what they saw before you could take photos easily. Look back at James Sowerby's pictures. Can you see he has drawn the crystal shapes? He has looked down a microscope to see in more detail- have you ever used a microscope? Scientists use them to look REALLY close!
Before I go I'd like to introduce you to my friend Mike who is a type of scientist called a Mineralogist: http://www.nhm.ac.uk/kids-only/ologist/mineralogist/index.html Grace (schools@nhm.ac.uk if there's anything else you would like to know about minerals at NHM)
These are all marvellous Powerpoint presentations about magnets and magnetism. Magnetism is great fun to play with in class. I like the lines of force shown when we sprinkle iron filings on paper over a magnet.
Did you know our whole world acts like a magnet? The Earth has a magnetic north and south pole (not the geographic north and south pole). If it were possible to place a large sheet of paper over the Earth and sprinkle enough iron filings, we might see a pattern.
The Earth's magnetic field is created within our planet. At Earth's centre is a large mass of iron. Even though it is very, very hot, the pressure keeps it solid. Around it is molten iron. As the molten iron moves around the core, a magnetic field is made.
Earth's magnetic field protects us from harmful effects of the solar wind (charged particles from the sun). If we didn't have the field, life as we know it wouldn't exist. We can see how the solar wind and our Earth's magnetic fields interact. We see the interaction as the northern and southern lights seen at north near the poles.
I really enjoyed your post. Science has always been an interest of mine.
Hi. I didn't know that heat can make a magnet lose its magnetism!
ReplyDeleteI wonder if you know of another way that they 'lose' their magical force?
Hi,
ReplyDeletebrilliant powerpoints, well done!
I thought you might like this drawing of magnetite, by James Sowerby (http://www.minrec.org/artwork.asp?cat=1&artistid=42) from the Natural History Museum art library:
http://piclib.nhm.ac.uk/popuppreview.asp?image=035567
People think of Dippy the Dinosaur http://www.nhm.ac.uk/kids-only/at-museum/star-attractions/diplodocus/index.html but often they don't know how much art is here!
It is important because artists had to record what they saw before you could take photos easily.
Look back at James Sowerby's pictures. Can you see he has drawn the crystal shapes?
He has looked down a microscope to see in more detail- have you ever used a microscope?
Scientists use them to look REALLY close!
Before I go I'd like to introduce you to my friend Mike who is a type of scientist called a Mineralogist:
http://www.nhm.ac.uk/kids-only/ologist/mineralogist/index.html
Grace
(schools@nhm.ac.uk if there's anything else you would like to know about minerals at NHM)
Hello Year 3,
ReplyDeleteThese are all marvellous Powerpoint presentations about magnets and magnetism. Magnetism is great fun to play with in class. I like the lines of force shown when we sprinkle iron filings on paper over a magnet.
Did you know our whole world acts like a magnet? The Earth has a magnetic north and south pole (not the geographic north and south pole). If it were possible to place a large sheet of paper over the Earth and sprinkle enough iron filings, we might see a pattern.
The Earth's magnetic field is created within our planet. At Earth's centre is a large mass of iron. Even though it is very, very hot, the pressure keeps it solid. Around it is molten iron. As the molten iron moves around the core, a magnetic field is made.
Earth's magnetic field protects us from harmful effects of the solar wind (charged particles from the sun). If we didn't have the field, life as we know it wouldn't exist. We can see how the solar wind and our Earth's magnetic fields interact. We see the interaction as the northern and southern lights seen at north near the poles.
I really enjoyed your post. Science has always been an interest of mine.
@RossMannell
Teacher, NSW, Australia