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EARTH SCIENCE: ASTRONOMY UNIT Flashcards | StudBud
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EARTH SCIENCE: ASTRONOMY UNIT
EARTH SCIENCE: ASTRONOMY UNIT
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1
OneAstronomical Unit (A.U.) is equal to...
a mile
one inch
a kilometer
isequal to the distance from the Earth to the Sun
2
TheLaw of Universal Gravitation tells us that...
decrease in mass causes earth to expand
an increase in mass causes the earth to shrink
increase is mass causes a decrease in gravitational force
increase in mass causes an increase in gravitationalforce.
3
Hydrogen fusion takes place in the?
Pluto
crust of the Sun
surface of the Sun
core of the Sun
4
The pull of the moon on the Earth’s tidal bulgecauses what?
the Earth to rotate a little slower
the Earth to gain mass
the Earth to rotate quicker
the Earth to fall off its elliptical pattern
5
TheSun's gravity keeps all the planets in our solar system orbiting around it.
false
true
6
things that scientists use to classify planets...
all of the above
The object orbits a star
The path of the object is clear of other objects
Its gravity makes the object spherical
7
Newton’sFirst Law of Motion is the...
Law of Jay Walking
Law of Cheesecake
Law of Universal Gravity
Lawof Inertia
8
Some of the common galaxy shapes include...
spiral
irregular
elliptical
all of the above
9
The Milky Way Galaxy is a barred spiral galaxy in shape.
true
false
10
"a person hits a ball with a bat, it will hurt your hand from the reaction ofthe force"
Newton’sThird Law
Newton’s second Law
Newton’s first Law
11
Most of what scientists have learned about stars hasbeen gained by studying their...
radiation
brightness
elliptical orbit
gravitational pull
12
The core of a star must reach___________degrees Celsius for hydrogen fusion to begin.
100,000,000
100,000
1,000
10,000,000
13
The sun’s energy moves as waves, transferring from atom to atom, in the ____ of the Sun.
surface
crust
radiative zone
core
14
"Theplanets have an elliptical orbit and the Sun is at one of the focal points." Is stated in?
Newton’sFirst Law of Motion
Kepler’sharmonic law
Kepler’sFirst Law
Newton’sThird Law of Motion
15
Our galaxy is the?
Ringer Galaxy
Milky Way <br>Galaxy
StarBurst Galaxy
Patty Galaxy
16
What is most abundant element of the Sun?
Hydrogen
Carbon
Iron
Oxygen
17
The larger star will undergo fusion for ____ time than a small star.
less
more
about the same
18
An elliptical galaxy is one that is shaped like a...
sphere
cube
trianagle
flattened circle
19
A planet’s perihelion is the point in its orbit atwhich it is _________ to the Sun.
farthest
closest
20
how many focal points do an ellipse have?
3
6
2
4
