Chapter 20 - Cosmology (The Big Bang)

Question 1

Define the astronomical unit.

Answer 1

Question 2

Define the light year.

Answer 2

Question 3

Define the arcsecond.

Answer 3

Question 4

Define the parsec.

Answer 4

Question 5

How do you approximately find the distance to a nearby star?

Answer 5

Question 6

Define the doppler effect.

Answer 6

Question 7

Define red-shift and blue-shift.

Answer 7

Question 8

What is the doppler equation?

Answer 8

Question 9

State Olber’s Paradox.

Answer 9

The Universe is Eternal and Infinite.

Question 10

State Hubble’s law.

Answer 10

Question 11

State the cosmological principle.

Answer 11

Question 12

State Hubble’s Constant.

Answer 12

Question 13

What are the two evidences for the big bang?

Answer 13

Question 14

What is the CMB?

Answer 14

The cosmic microwave background radiation is the remnant radiation left from the big bang. Over time, whilst travelling to the universe, this light has stretched into a microwave frequency.

Question 15

How do you calculate the age of the universe?

Answer 15

Question 16

What is the universe made up of?

Answer 16

Question 17

State the evolution of the universe from the Big Bang to 100 seconds.

Answer 17

Question 18

State the evolution of the universe from 100 seconds to present day.

Answer 18