20 points+ question 1 earth is like a bar magnet. what does this mean about its magnetic poles? there are two magnetic north poles. there is only a magnetic north pole. there are both magnetic north and south poles. there is only a magnetic south pole. 2 points save answer question 2 which of the following statements about electric charges and magnetic domains is true? electric charges must come in pairs—one positive and one negative. magnetic domains must come in pairs—one north and one south. electric charges and magnetic domains must come in pairs—one north and one south. electric charges and magnetic domains must come in pairs—one positive and one negative. question 4 which material cannot be made into a magnet? aluminum cobalt iron nickel 2 points save answer question 5 which material has magnetic domains and can be made into a magnet? a glass bottle an aluminum can an iron nail a plastic fork

Q1: There are both magnetic north and south poles.

Q2: Magnetic domains must come in pairs—one north and one south.

Q4: Aluminium

Q5: An iron nail

Explanation:

Q1: A magnet always has two poles. So, our earth has also two poles. One pole is north and the other is south.

Q2: Electric charge may be isolated but magnetic domains always have two poles.

Q4: Aluminium is not a magnetic substance, so it cannot be made into a magnet.

Q5: Iron is a magnetic material, so it can be made into magnet.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.