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Science Magnetism
eletricity and magnetism quiz - decemeber 1st
| Question | Answer |
|---|---|
| explain how magnetic domains are important or something to be magnetic. | it is important because all the group of atoms with their fields pointing in the same direction. |
| what does ferromagnetic mean? | it means that an object is able to become magnetic. |
| list the 3 most common ferromagnetic elements: | iron, nickel, and cobalt |
| why can we see the northern and southern lights? | because the sun ejects a large number of charged particals at one. (solar wind and chemicals) |
| what are the nothern and southern lights called? | southern-Aurora Australis northern-Aurora Borealis |
| what is the formula for voltage? | V= I*R |
| what is the formula for amperage? | I = V / R |
| what is the formula for resistance? | R = I*V |
| what is voltage? | is a measure of how muh electrical potential energy each electron can gain |
| what is resistance? | is a measure of how difficult it is for eletrons to flow through a material |
| what is amperage? | electric current of flow |
| why does an object become positively charged? |