Sun & Stars

Question 1

lg # of different stars could expect to find the most variation in data describing stars’_____.

Accepted Answer

luminosity

Question 2

Determination of stellar parallax is important because it allows the direct determination of

Accepted Answer

distance

Question 3

A parsec is a greater distance than a light year.

Accepted Answer

True

Question 4

The ____ of a star determines its temperature, luminosity, and diameter.

Accepted Answer

mass

Question 5

Which letter shows where fusion begins?

Accepted Answer

B

Question 6

The state of matter found in the Sun’s interior is plasma.

Accepted Answer

True

Question 7

Use the table to calculate which of the following units represents the greatest distance.

Accepted Answer

parsec

Question 8

star gravitationally bound to another star can either be part of a star cluster or a ____ star.

Accepted Answer

binary

Question 9

Which letter shows a protostar?

Accepted Answer

C

Question 10

Because the __contains 99 % of the mass in solar system, it controls the motion of the planets.

Accepted Answer

sun

Question 11

The line on this graph best describes the relationship between________.

Accepted Answer

the temperature of a star and its luminosity

Question 12

Stars more massive than the Sun use up their fuel at a slower rate.

Accepted Answer

False

Question 13

The stages of a stars life are dependent upon

Accepted Answer

High mass verses low mass

Question 14

The sun is classified as as a

Accepted Answer

main sequence star

Question 15

sequence of events,formation of a star. What is the correct label for the blank in the diagram?

Accepted Answer

nuclear fusion begins

Question 16

Which letter shows a planetary nebula

Accepted Answer

E

Question 17

When hydrogen nuclei fuse, they produce helium.

Accepted Answer

True

Question 18

The shaded area of the graph correctly shows % of stars in the main sequence of an HR diagram.

Accepted Answer

True

Question 19

The ____________________ flows outward from the corona to the entire solar system.

Accepted Answer

Solar Wind

Question 20

The top layer of the Sun’s atmosphere is the low-density ____________________.

Accepted Answer

Corona

Question 21

Earth is bombarded w/ particles & radiation after eruptions from Sun’s surface called __.

Accepted Answer

Solar Flare

Question 22

The greatest proportion of elements in the universe are those with the smallest masses.

Accepted Answer

True

Question 23

The apparent shift in a star’s position caused by the motion of the observer is called ____.

Accepted Answer

parallax

Question 24

Which letter shows where a star begins to run out of fuel & grow larger?

Accepted Answer

C

Question 25

Most of the light emitted by the Sun comes from the ____.

Accepted Answer

photosphere

Question 26

Which point on the timeline most correctly identifies the Sun’s current point in its lifecycle?

Accepted Answer

B

Question 27

Corona is visible only during eclipses because it is the coolest layer of the Sun’s atmosphere.

Accepted Answer

False

Question 28

The Sun is almost entirely composed of hydrogen and helium.

Accepted Answer

True

Question 29

What letter shows a black hole?

Accepted Answer

F

Sun & Stars

Questions 29

Sun & Stars

Questions 29