Exam #4

Question 1

Which type of black hole could have a mass of 1Mo?

Answer 1

Mini

Question 2

Which type of blackhole would have the weakest title force as you approach it event horizon?

Answer 2

Super massive black hole

Question 3

Which type of black hole would have the second strongest tidal force as you approach it’s event horizon?

Answer 3

Stellar mass black hole

Question 4

What is the scape velocity from the event horizon of a black hole?

Answer 4

“C”

Question 5

What is the escape velocity from a black hole?

Answer 5

Greater than “C”

Question 6

What is the escape velocity from your Scantron in front of you?

Answer 6

Less than “C”

Question 7

Which of the listed properties pertain to open clusters?

Answer 7

10 to a few thousand stars in a number

Relatively flat in shape

Question 8

Which type of telescope what do you have to used to detect a HI region?

Answer 8

A radio waves telescope

Question 9

Which of the following is correct about spiral and barred spiral galaxies?

Answer 9

They contain high percentages of dust and gas

They contain young and old stars

They are the most common type of galaxy observant

Question 10

According to Einstein’s special theory of relativity what would happen to your twin sister if she traveled to the star Sirius and back at the speed of light?

Answer 10

She would come back younger than you

Question 11

GammaRay burst are thought to be created by?

Answer 11

A jet from in exploding hyper giant directed our way

Neutron stars colliding

Question 12

Assumed that the sun suddenly collapsed and became a black hole. What would happen to the earth?

Answer 12

It would keep it same orbit but get very cold

Question 13

What data would you have to collect about globular cluster’s in order to discover the Suns correct location within the Milky Way galaxy?

Answer 13

Their direction

Their distance

Question 14

In astronomer makes an observation of a galaxy which has a very large amount of gas and dust what type of galaxy with this be?

Answer 14

Spiral

Barred spiral

Irregular

Question 15

According to relativity if you were to travel at the speed of light how long would it take you from your point of view to travel to the star Vega(26 light years away)?

Answer 15

No time

Question 16

What is the new name given to the local super cluster?

Answer 16

Laniakea

Question 17

If you observe a galaxy which appears very blue what correct conclusion could you make about its constituents?

Answer 17

It has relatively recent star formation occurring

It contains relatively young stars

It has a relatively high percentage of gas and or dust

Question 18

The physicist Stephen Hawking theorized that black holes can leak energy from their event horizons. This energy is called?

Answer 18

Hawking radiation

Question 19

Which person listed did not make use of Henrietta Leavitt’s Period-Luminosity relation for Cepheid variables?

Answer 19

William Herschel

Question 20

What type of object do you find in the center of the crab nebula?

Answer 20

Neutron star

Question 21

You using a telescope and camera photo graph spiracle gases objects consisting of multicolored gases. Later you find out that another astronomer has discovered a white dwarf at the center at this region. This is most likely a?

Answer 21

Planetary nebula

Question 22

What keeps a stellar core which is greater than three solar masses from collapsing due to gravity?

Answer 22

No known force

Question 23

If you using the Doppler effect determined that a main sequence star has an unseen companion who’s mass is 2.2 solar masses that unseen companion is most likely a?

Answer 23

Neutron star

Question 24

Theoretically which of the following would be able to escape from the event horizon of a black hole?

Answer 24

GammaRay

x-ray

a particle traveling faster than the speed of light

Question 25

A black hole is an object with?

Answer 25

Has collapsed inside of it on gravitational radius or event horizon

Question 26

Which of the following list The objects in order of increasing lowest to highest density?

Answer 26

Earth, pulsar, black hole’s singularity

Question 27

Which of the following is a candidate for a mini black hole?

Answer 27

None of the previous

Question 28

Which galaxy is classified as an AGN an (active glactic nucleus)?

Answer 28

None of the previous Are AGN’ S

Question 29

Even though the concept of space time was made famous by Einstein it was first proposed by?

Answer 29

Herman Minkowski

Question 30

Assume that astronomers make a discovery of a black hole with a mass of 5000 solar masses this black hole would most likely be considered a?

Answer 30

Intermediate mass black hole

Question 31

Who discovered that there are many different types of galaxies?

Answer 31

Edwin Hubble

Question 32

Who discovered Uranus and also formulated a Milky Way galaxy model that looked like a grind stone?

Answer 32

William Herschel

Question 33

Who first determine the sons correct location with in the Milky Way galaxy?

Answer 33

Harlow Shapley

Question 34

Who first solved equation pertaining to rotational black holes?

Answer 34

Roy Kerr

Question 35

Who discovered that the band of light called the Milky Way galaxy consisted of stars?

Answer 35

Galileo

Question 36

Confirmation of general relativity came in 1919 when starlight was bent during a?

Answer 36

Total solar eclipse

Question 37

According to the general theory of relativity what would you notice happening to your friend as she headed towards the event horizon of the black hole?

Answer 37

She would appear to move slower and slower eventually freezing in motion at the event horizon

Question 38

What would you have to do to turn a baseball into a black hole?

Answer 38

Compress it

Question 39

Considering general relativity which clock would take more quickly one on the moon or one on earth?

Answer 39

Clock on the moon

Question 40

Why do dark absorption nebulae appear bluish in color?

Answer 40

Poor question. Dark nebulae are usually black or very dark in appearance.