Test 2 Extra Questions

Question 1

What is a Type 1 Supernova?

Answer 1

Caused by a white dwarf.

Question 2

What is a Type 2 Supernova?

Answer 2

Massive star caused it.

Question 3

What is the Inflation Phase?

Answer 3

The universe growing exponentially in the first few moments after the big bang.

Question 4

What is Nucleosynthesis?

Answer 4

Creating new atomic nuclei from pre-existing protons and neutrons.

Question 5

What is Recombination?

Answer 5

Charged electrons first become bound to form electrically neutral hydrogen atoms 380,000 years after the big bang.

Question 6

What are the Dark Ages of Astronomy?

Answer 6

Between big bang and formation of first stars.

Question 7

What will happen to the Universe in the Future?

Answer 7

Only stars left will be red dwarfs.

Question 8

What did LIGO Observe?

Answer 8

Merging of 2 black holes, 10x mass of the Sun.

Question 9

What will happen to the Milky Way in the Future?

Answer 9

We will collide with the Andromeda galaxy.

Question 10

Who were Blackholes Named After?

Answer 10

Roy Kerr.

Question 11

What is the Range of Star Sizes?

Answer 11

0.1 to 100 times the Sun’s mass.

Question 12

What Happens to Stars when Fuel runs out?

Answer 12

White dwarfs become black dwarfs.

Question 13

What did Inflation Provide?

Answer 13

Smoothness and flatness.

Question 14

How did Inflation Provide Smoothness?

Answer 14

Imperfections seem minuscule - billiard ball example.

Question 15

How did Inflation Provide Flatness?

Answer 15

Blew up universe, so space-time’s curvature was diluted.

Question 16

What Happened as a Result of Recombination?

Answer 16

Opaque plasma of the universe became transparent.

Question 17

Where are Heavy Elements Formed?

Answer 17

Stars and Supernovae.

Question 18

Who was the Meteorologist and physicist who gave the first Mathematical Description of the Big Bang?

Answer 18

Georges Lemaitre.

Question 19

When did Inflation Happen?

Answer 19

10^-35 seconds after the big bang.

Question 20

How fast do the Spiral Arms of a Galaxy Spin?

Answer 20

Slower.

Question 21

How is Luminosity Related to Period for Cepheid Variables?

Answer 21

Increased luminosity = increased period.

Question 22

How do we Use Cepheid Variables to Calculate Distance?

Answer 22

Very luminous and predictable - determine period, work out luminosity, use distance modulus equation to work out distance.

Question 23

What is the Chandrasekhar Limit?

Answer 23

Maximum mass of white dwarfs.

Question 24

What is the Large Scale Structure of the Universe?

Answer 24

Butterfly shaped - large voids with few galaxies in the middle.

Question 25

Why did the Dark Ages of the Universe End?

Answer 25

The universe cooled enough for ions to recombine into atoms, allowing light to shine.