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Chapter 25 Beyond Our Solar System Flashcards | StudBud
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Chapter 25 Beyond Our Solar System
Chapter 25 Beyond Our Solar System
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Pearson Chapter 25 Earth Science
Flashcards
30 cards
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Practice quiz
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Questions
30
Answers
1
2 stars are the same absolute magnitude. StarA is farther away, what is the apparent magnitude?
They are the same.
Star A will be dimmer
Star A will be brighter
2
After a star dies, what can it become?
black dwarf
red giant
stellar gas
black hole
3
Rank the following stars from brightest to dimmest: 4, -25, 8, -5,
4, -5, 8, -25
8, 4, -5, -25
-25, -5, 4, 8
4
What does parallax measure?
The distance of a star from earth
The speed a star is moving
The brightness of a star
The mass of a star
5
What term describes the brightness of a star as seen from earth?
apparent magnitude
distance of star
absolute magnite
brightness of star
6
The larger (more positive) the apparent magnitude number, the
________
the star.
brighter
dimmer
7
What is a constellation?
a collection of galaxies
a specific type of galaxy
a picture in the sky
an area of sky that contains a specific pattern of stars
8
How do scientists study black holes when they can not see them?
supergiants
look for dark space
binary star systems
microwave background radiatation
9
How do scientists use parallax to measure a star's distance?
the larger the angle, the larger the star
the larger the angle the farther the star
the larger the angle, the closer the star
the larger the angle, the smaller the star
10
The Milky Way is a ____________.
galactic cluster
constellation
spiral galaxy
red giant
11
The light-year is a unit used to measure the age of a star.
false
true
12
One light-year is about ___________ .
5.8 trillion miles
9.461 x 1012 Miles
9.461 x 1012 Kilometers
5.8 trillion Kilometers
13
How does Doppler effect tell scientist which direction a star is moving?
The brightness of the star
The color shift of the star
The speed of a star
14
The red shifts exhibited by galaxies can be explained by ________________.
an expanding universe
expansion of the Milky Way
a collapsing universe
calculation errors
15
What is one way that scientists calculate the mass of a star?
the parallax of a star
binary star systems
the color of a star
the red shift intensity
16
The difference of brightness for 2 stars having the same absolute magnitude is due to what?
the ages of the stars
the sizes of the stars
the colors of the stars
how far they are away
17
How are binary star systems used to determine a star's mass?
the distance the stars are from the earth
the brightness of the two stars
the distance between the stars
the center of mass between them
18
What is the temperature of blue giants?
2,500 K
5000 K
10,000 K
20,000 K
19
The measurement of a star’s brightness from earth is called ________.
absolute magnitude
apparent magnitude
parallax
temperature
20
The two properties of a star that are plotted on an H-R diagram are _______________.
size and distance
absolute magnitude and temperature
absolute magnitude and distance
size and temperature
21
Most of the stars on the Hertzsprung-Russell diagram are ________________.
Red giants
Main sequence
White dwarfs
Supergiants
22
Large Doppler shifts indicate
____
velocities.
lower
higher
23
What is one support of the big bang theory?
background microwave radiation
parallax
the size of galaxies
Galaxies are different distances away
24
Galaxies are receding from us have what color shift?
green
red
blue
orange
25
Where are the dimmest stars found on a Hertzsprung-Russell diagram?
top left
bottom left
bottom right
top right
26
What is the range of surface temperatures of red giants?
7,500 K
12,500 K
5,000 K
10,000 K
27
On an H-R diagram, main-sequence blue stars are massive and ___________.
hot
cool
supergiants
white dwarfs
28
Stellar parallax is used to determine a star’s _____________
brightness
motion
mass
distance
29
The brightness of a star, if it were at a set distance, is its __________.
parallax
apparent magnitude
mass-distance ratio
absolute magnitude
30
Where is the sun positioned in the Milky Way Galaxy?
at the tip of a spiral
in the middle
in the middle of a spiral
on the outside
