Quiz about Star Death and Radio Interferometry Review

Question 1

Stars form from

Accepted Answer

Collapsing gas clouds

Answer

Other stars colliding

Answer

Other stars exploding

Answer

Collapsing dust clouds

Question 2

What is the last fusion product any star can produce?

Accepted Answer

Iron

Answer

Oxygen

Answer

Helium

Answer

Europium

Question 3

What determines how long a star will live?

Accepted Answer

Its mass

Answer

Its chemical composition

Answer

Its surface temperature

Answer

Its size

Question 4

What determines how many different fusion products a star will eventually produce?

Accepted Answer

Its mass

Answer

Its chemical composition

Answer

Its surface temperature

Answer

Its size

Question 5

True or false: large stars live longer than small stars.

Accepted Answer

False

Answer

True

Question 6

True or false: large stars make more different elements than small stars.

Accepted Answer

True

Answer

False

Question 7

Roughly what proportion of stars will end up as white dwarfs when they die?

Accepted Answer

97%

Answer

50%

Answer

75%

Answer

85%

Question 8

The very heaviest stars will become what when they die?

Accepted Answer

Black hole

Answer

White dwarf

Answer

Neutron star

Answer

Quasar

Question 9

What has to happen before a star can become a neutron star or black hole?

Accepted Answer

Type II supernova

Answer

Type I supernova

Answer

Nova

Answer

Accretion

Question 10

Which of these requires a binary system (2 stars orbiting each other) to occur?

Accepted Answer

Type I supernova

Answer

Creation of a white dwarf

Answer

Type II supernova

Answer

Creation of a planetary nebula

Question 11

White dwarfs are created alongside

Accepted Answer

Planetary nebulae

Answer

Neutron stars

Answer

Black holes

Answer

Binary star systems

Question 12

One teaspoon of neutron star material weighs about as much as

Accepted Answer

Mt. Everest

Answer

A semi

Answer

Mercury

Answer

Jupiter

Question 13

Why might you want to change the locations of the telescopes in an interferometer?

Accepted Answer

To change the resolution of the interferometer

Answer

To change the light-collecting power of the interferometer

Answer

To see objects at different distances from the interferometer

Question 14

Which property or properties of an interferometer are affected by the size of the individual telescopes?

Accepted Answer

LCP only

Answer

Both LCP and resolution

Answer

Resolution only

Answer

Neither LCP nor resolution

Question 15

Two different interferometers observe the same region of our galaxy. Interferometer 1's observation shows small details in this region. Interferometer 2's observation shows larger details, but it reveals a dim source of radio light that was not detected by Interferometer 1.

Which of the following is correct when comparing the resolution and light-collecting power (LCP) of the two interferometers?

Accepted Answer

Interferometer #1 has a smaller LCP and a smaller resolution

Answer

Interferometer #1 has a greater LCP and larger resolution

Answer

Interferometer #1 has a greater LCP and a smaller resolution

Answer

Interferometer #1 has a smaller LCP and a larger resolution

Question 16

What happens to the value of resolution if we change from Configuration A to Configuration B?

Accepted Answer

increases

Answer

decreases

Answer

stays the same

Question 17

Which of these would be best at detecting SMALL details of a DIM nebula?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 18

I want to observe a galaxy using both interferometers C and D. Which of the two will be better at detecting dim stars within the galaxy?

Accepted Answer

C

Answer

D

Answer

they will be the same

Question 19

I want to observe a galaxy using both interferometers C and D. Which of the two will produce an image with smaller details visible?

Accepted Answer

D

Answer

C

Answer

they will be the same

Question 20

Which of the following four images came from an interferometer of the largest light-collecting power and longest baseline? (Note: All images were taken at the same wavelength.)

Accepted Answer

Question 21

Which of the following four images came from an interferometer of the smallest light-collecting power and shortest baseline? (Note: All images were taken at the same wavelength.)

Accepted Answer

Question 22

Which of the following four images came from an interferometer of the smallest light-collecting power and longest baseline? (Note: All images were taken at the same wavelength.)

Accepted Answer

Question 23

Which of the following four images came from an interferometer of the largest light-collecting power and shortest baseline? (Note: All images were taken at the same wavelength.)

Accepted Answer

Question 24

Which of these interferometers could have the same light collecting power as Interferometer X?

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 25

How does the light-collecting power of A compare to that of B?

Accepted Answer

Half as much

Answer

Four times as much

Answer

Twice as much

Answer

1/4 as much

Question 26

What is the primary function of a radio interferometer in astronomy?

Accepted Answer

To increase the resolution of radio observations

Answer

To measure the distance between stars

Answer

To detect extraterrestrial life

Answer

To measure the speed of light

Question 27

How does the distance between the telescopes in a radio interferometer affect the resolution?

Accepted Answer

The greater the distance, the higher the resolution

Answer

The greater the distance, the lower the resolution

Answer

The distance does not affect the resolution

Answer

The resolution is highest when the distance is moderate

Question 28

What is the advantage of using a radio interferometer over a single radio telescope?

Accepted Answer

Interferometers are cheaper to build and are more fault tolerant

Answer

Interferometers can observe objects in multiple wavelengths

Answer

Interferometers can achieve a higher resolution

Answer

Interferometers can observe objects in the ultraviolet spectrum

Question 29

What event can cause a white dwarf to explode as a Type Ia supernova?

Accepted Answer

Accretion of matter from a companion star

Answer

Collision with another white dwarf

Answer

Gravitational collapse

Answer

Exhaustion of nuclear fuel

Star Death and Radio Interferometry Review

29 questions