Question

question 10 (1 point) please match the follow units of astronomical distance with the correct number/answer column a 1. astronomical units (au) are_? 2. light years (ly) are_? 3. parsecs (pc) are_? 4. kiloparsecs (kpc) are_? 5. megaparsecs (mpc) are_? column b a. 6 trillion miles b. 1 million parsecs c. 3.26 light year d. 93 million miles e. 1,000 parsecs question 11 (1 point) stars explode, and when they do they create the stuff of life: the iron in our blood, the calcium in our bones, the phosphorus that is the backbone of our dna. true false question 12 (1 point) from various investigations, we have evidence that much of our galaxy is made of material we cannot currently observe directly with our instruments. this material is called_? a dark matter b anti - matter c both d neither time left for this assessment: 22:21

Explanation:

1. An astronomical unit (AU) is the average distance from the Earth to the Sun, approximately 93 million miles. A light - year (ly) is the distance light travels in one year, about 6 trillion miles. A parsec (pc) is equal to 3.26 light - years. A kiloparsec (kpc) is 1,000 parsecs and a megaparsec (Mpc) is 1 million parsecs.
2. When stars explode in supernovae, they create heavy elements like iron, calcium, and phosphorus through nucleosynthesis processes.
3. Dark matter is a form of matter that does not interact with light or other electromagnetic radiation, making it invisible to our current instruments, while anti - matter has different properties and is not the same as the unobservable matter in the galaxy in this context.

Answer:

Question 10:

1. d. 93 million miles
2. a. 6 trillion miles
3. c. 3.26 light years
4. e. 1,000 parsecs
5. b. 1 million parsecs

Question 11: True
Question 12: a. Dark Matter