Origin of the universe and elements

Question 1

What is the main goal of science?

Answer 1

To discover patterns in nature and make predictions

Question 2

What evidence supports the idea that the universe is expanding?

Answer 2

Red shift of galaxies

Question 3

What is the big bang refered to by Cliff?

Answer 3

The horrendous space kablooie

Question 4

Which two elements were formed during the big bang?

Answer 4

Hydrogen and helium

Question 5

What happens in stars when the temperature reaches about 10^7K?

Answer 5

Nuclear fusion begins

Question 6

What elements are produces by normal stellar fusion?

Answer 6

Elements up to iron (Fe)

Question 7

How are elements heavier than iron primarily formed?

Answer 7

Supernova explosions

Question 8

What is the s-process in nucleosynthesis?

Answer 8

Addition of neutrons slowly build stable elements

Question 9

What is a nebulae?

Answer 9

Region of gas and dust where stars are born

Question 10

Which of the following best defines a scientific theory?

Answer 10

A well-tested explanation based on evidence