Joe follows the procedure below to make a compass.

1. Move a magnet from the top of a needle to its point fifty times.
2. Lay the needle on a cork that is floating in a bowl of water.
3. Observe the direction that the needle points.

What is the purpose of step 1?

to give the needle an electric charge
to make the needle sharper
to magnetize the needle
to flatten the side of the needle

80 points pls brainliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?