Earth Science Characteristics of STARS review

Question 1

Compared to other groups of stars, the group that has low luminosities and low surface temperatures are the:

Accepted Answer

Red Dwarfs

Question 2

Which of the following groups of stars represent the final observed stages of stars with masses similar to the Sun?

Accepted Answer

White dwarfs

Question 3

which of the following stars are cooler than the Sun?

Accepted Answer

Barnard’s Star

Question 4

The Sun is classified with which of the following types of stars?

Accepted Answer

Main sequence

Question 5

Which two groups of stars can have similar brightness?

Accepted Answer

Blue supergiants and supergiants

Question 6

Which of the following sequences best describes the formation and evolution of stars with masses similar to the Sun?

Accepted Answer

Protostar, main sequence, red giant, white dwarf

Question 7

Which process produces the energy that allows the stars of the universe to radiate visible light?

Accepted Answer

nuclear fusion

Question 8

How do Protostars produce light and heat?

Accepted Answer

Gravitational compression of a Gas

Question 9

Compared with our Sun, the star Betelgeuse is:

Accepted Answer

larger, cooler, and more luminous

Question 10

Stars spend most of their life as

Accepted Answer

Main sequence stars

Question 11

Which of the forces listed below is most responsible for the formation of stars?

Accepted Answer

Gravity

Question 12

By which process do stars convert mass into great amounts of energy?

Accepted Answer

nuclear fusion

Question 13

Which has a surface temp. of approx. 9,000 K and luminosity about 1 to 20 X more than the Sun?

Accepted Answer

Sirius

Question 14

Compared to the surface temperature and luminosity of the star Polaris, the star Sirius is:

Accepted Answer

hotter and less luminous

Question 15

According to the diagram, a star like Earth’s Sun will eventually:

Accepted Answer

change into a white dwarf

Question 16

Which star has a higher luminosity and a lower surface temperature than the Sun?

Accepted Answer

Aldebaran

Question 17

A white dwarf star is in the "Late" stage, how long will it "live" (have nuclear fusion in its core)?

Accepted Answer

It is already 'dead'

Question 18

Compared to Sun sized stars, the stellar remnents from the death of massive stars are:

Accepted Answer

Smaller and more massive

Question 19

A white Dwarf star still has 60% of the Sun's mass, how large are they?

Accepted Answer

Same size as the Earth

Question 20

Why is it unlikely that we will ever find a Black Dwarf Star?

Accepted Answer

No white dwarves have cooled down yet

Question 21

The Balance between a Star's Energy OUT and gravity crushing inward is called?

Accepted Answer

Hydrostatic Balance

Question 22

Which star is 300 times brighter than the Sun but has a surface temperature about 2,000 K cooler than the Sun?

Accepted Answer

Aldebaran

Question 23

How big are Neutron Stars?

Accepted Answer

About the size of New York City

Question 24

Which curved line represents the Sun's size as RED GIANT:

Accepted Answer

arc B

Question 25

Stars like Earth’s Sun most likely formed directly from a:

Accepted Answer

nebula

Question 26

What is a Neutron star made out of?

Accepted Answer

Neutrons

Question 27

Which of the following types of stars is considered part of the main sequence?

Accepted Answer

Red Dwarves

Question 28

Compared to its Main Sequence stage, the earlier Protostar stage is always:

Accepted Answer

Larger, cooler, and more luminous

Question 29

Which star has the greatest probability of producing a supernova explosion?

Accepted Answer

Betelgeuse

Question 30

According to the diagram, the life-cycle path followed by a star is determined by the star’s initial:

Accepted Answer

mass and size

Earth Science Characteristics of STARS review

Questions 30

Earth Science Characteristics of STARS review

Questions 30