Chap. 12-15

Question 1

Temperature of sun’s core?

Answer 1

15,000,000 K

Question 2

Temperature of the Chromosphere?

Answer 2

6,000 K

Question 3

Temperature of the Corona?

Answer 3

1,000,000 K

Question 4

Time period of the magnetic field rotation on the Sun?

Answer 4

30 days at the poles, 25 at the equator

Question 5

How long is the cycle to reverse the polarity of the sun?

Answer 5

11 years

Question 6

What is Parallax?

Answer 6

Method of triangulation, wait 6 months

Question 7

How long is 1 Parsec?

Answer 7

3.26 Light Years

Question 8

Wein’s Law?

Answer 8

Blue is hotter than red

Question 9

How star brightness is classified?

Answer 9

OBAFGKM

Question 10

How does Apparent Magnitude work?

Answer 10

Smaller and negative numbers are brighter

Question 11

What is Luminosity?

Answer 11

The energy output per second of a star

Question 12

How long does our Sun burn for?

Answer 12

10 billion years, we are at 4.5 billion

Question 13

What is hydrostatic Equilibrium?

Answer 13

Gravitational and Pressure forces must balance

Question 14

Difference between low and high mass stars?

Answer 14

low mass stars turn into white dwarfs, high mass stars turn into neutron stars or black holes

Question 15

Mass of a White Dwarf (planetary)?

Answer 15

Similar to the mass of Sun, but the size of Earth

Question 16

Analogy of White Dwarf mass?

Answer 16

A golfball of White Dwarf is the mass of 6 trucks

Question 17

Analogy of Neutron Star mass?

Answer 17

a grain of sand weighs as much as a 747 airplane

Question 18

0-8 solar mass?

Answer 18

white dwarf

Question 19

8-20 solar mass?

Answer 19

neutron star

Question 20

20> solar mass?

Answer 20

black hole

Question 21

What is a black hole?

Answer 21

the collapse of matter so massive and small that even the speed of light can not escape it