Astronomy Assignment 10

Front 1

Fom inside out, which is in the correct order for the structure of the sun?

Back 1

Core, radiative zone, convective zone, chromosphere

Front 2

The speed of light is 300,000 km/s. if 2.00 kg of mass is converted into energy, how much energy will be produced?

Back 2

1.8x10^17

Front 3

The most striking example of solar variability was the:

Back 3

Maunder minimmum from 1645-1715

Front 4

Granulation is the most obvious proof of solar convective energy transport

Back 4

True

Front 5

The solar wind is constantly removing mass from the sun

Back 5

True

Front 6

Solar neutrino problem is that we observe more neutrinos than predicted

Back 6

False

Front 7

The solution to the solar neutrion problem was

Back 7

2/3 of the neutrinos transform into a new type during the 8 minue trip to earth

Front 8

Visible sunspots lie in the

Back 8

Granulation in the photosphere

Front 9

Whil observing the sun, you note a large number of sunspots. What can you conclude?

Back 9

There are likely to be an above average number of flares and prominences

Front 10

As the sun rotates, an individual sunspot can be tracked across its face. From eastern to western limb, this takes about

Back 10

2 weeks

Front 11

Sunspots are dark splotches on the sun. Which statement is true?

Back 11

They are extremely hot, but cooler than the surrounding areas of the sun

Front 12

In the proton-proton cycle, the helium and neutrino have less mass than the original hydrogen. What happened to the lost mass?

Back 12

It is converted into energy

Front 13

Suppose a large flare is detected optically. How long until radio interference arrives?

Back 13

Simultaneously

Front 14

In the proton-proton cycle, the positron is:

Back 14

An anti-electron

Front 15

Compared to the underlying photosphere and chromosphere, the corona is ___________ in temperature

Back 15

Much hotter

Front 16

The temperature of the photosphere is about

Back 16

5,800 K

Front 17

THe outward pressure of hot gas in the Sun is:

Back 17

Balanced by the inward gravitational pressure

Front 18

The strongest magnetic fields in the photosphere lie near

Back 18

Sunspots

Front 19

During a pepriod of high solar activity, most sunspots lie near the Sun's

Back 19

Equator

Front 20

What is the meaning of the solar constant?

Back 20

The amount of energy the Earth receives per unit area and time

Front 21

What two energy transport mechanisms, in order from outside the core to teh surface, are found in the sun?

Back 21

Radiation, convection

Front 22

Which is the net result of the proton-proton chain?

Back 22

4 protons --> 1 helium 4+2 neutrinos + gamma rays

Front 23

During a period of high solar activity, the corona

Back 23

is more irregular

Front 24

The critical temperature to initiate the proton-proton cycle in the cores of stars is

Back 24

10 million K

Front 25

The only particle we can directly observe coming out of the Sun's core is the

Back 25

neutrino

Front 26

Nuclear __________ explains the sun's immense and sustained energy output

Back 26

Fusion