The Big Bang theory

Question 1

What is the big bang theory?

Answer 1

try to explain what happened at the beginning of the universe
suggests:
there was a big bang and universe was formed
universe continues to expand

Question 2

Colour of star as temperature increases

Answer 2

Red, orange, yellow, white and then blue

Question 3

Stars emit radiation over

Answer 3

the complete ems spectrum

Question 4

as temp of star increases

Answer 4

more radiation per unit surface area per unit time (area under graph increases)
peak wavelength shifts to shorter wavelength

Question 5

Cosmic Microwave background radiation

Answer 5

radiation left over from early development of universe, expansion of universe has caused wavelength to stretch and is now in microwave region

Question 6

Relative Abundance of hydrogen and helium

Answer 6

abundance of hydrogen and helium corresponds to what was predicted if universe started roughly 14 billion years ago

Question 7

Redshift and Hubble’s Law

Answer 7

Shows universe is expanding meaning if we went back in time there must have been a time the universe was a single spot