What does it mean if you can hear the tuning fork more clearly in one ear or another during the Weber test? How is the mechanism of hearing different if the handle of the tuning fork is held on the mastoid process instead of holding the tuning fork tines near the ear canal? What types of mechanisms does the body use for balance? How does vision affect balance? Imagine that you were standing on a moving platform when performing the balance test. How would this affect balance and why?

20 point pls brianliest 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?