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The Milky Way and the Solar System Flashcards | StudBud
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The Milky Way and the Solar System
The Milky Way and the Solar System
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A quiz for introductory astronomy for middle schoolers
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
What separates the rocky inner planets from the gas giants?
a galaxy
The sun
the moon
The asteroid belt
2
An asteroid is just a super-sized meteor: a hunk of rock in space
true
false
3
Which choice describes the relative motions of the sun and Earth?
The sun rotates (spins) around Earth, Earth orbits the moon
Earth rotates (spins) on its axis, revolves around the sun
The Earth revolves around the moon and rotates on its axis
4
What object is essentially a huge dirty snowball in space?
a moon
a meteor
a comet
An asteroid
5
The force of gravity increases the closer you get to the sun
false
true
6
Sunspots are caused by
the star running out of hydrogen
frozen space
the Northern Lights
the sun's magnetic field getting twisted
7
How long is one revolution of the Earth's orbit?
6 months
24 hours
28 days
365.25 days
8
What does NOT happen to stars when they use up all their hydrogen?
Most become red giants
They explode
they begin fusing heavier elements
9
What color are the hottest stars?
yellow
blue
red
white
10
Galaxies that have a central bulge (elliptical or spiral) all have
stars at their centers
a solar system and their centers
nebulae at their centers
a black hole at their centers
11
About how old is our sun?
14 billion years
4.6 billion years
6 million years
the same age as the Milky Way
12
Which orbit the sun the fastest?
the asteroid belt
gas giants
rocky inner planets
13
What is the only object in our solar system that generates its own light?
Venus
The Sun
The Moon
The Earth
14
Why is Venus so hot and bright?
it is a small star
Its thick, reflective atmosphere traps heat
it has no atmosphere so the sun heats it
15
What planet has the highest and lowest temperature because of its closeness to the sun?
Earth
Jupiter
Neptune
Mercury
16
Which are sorted from largest to smallest?
universe, galaxy, solar system, planet
planet, galaxy, solar system, universe
universe, solar system, galaxy, planet
17
Which is NOT true about the moon?
The moon is gradually moving farther from the Earth
The moon is tidally locked with the Earth so a year= a day
The will someday crash into the Earth
The moon has many impact craters
18
The speed of orbit decreases the closer you get to the sun
true
false
19
A nebula is:
Something with a gravitational pull that light can't escape
A star
A cloud of gas and dust
20
What is the accepted theory of how the moon formed?
The Earth and Moon formed together from space dust and rocks
A Mars-sized planet collided with early Earth.
Moon material was expelled through a crack in the Earth.
The moon was captured by Earth's gravity
21
Which group of planets are the most dense?
Earth, Venus, Mars, Mercury
Mercury, Mars, Saturn, Uranus
Mars, Earth, Jupiter, Neptune
Jupiter, Uranus, Neptune, Saturn
22
The Perseid and Leonid meteor showers are caused by
Earth traveling through the asteroid belt
The Earth's orbit crossing a comet's tail
a mystery scientists are trying to solve
The Oort cloud crossing Earth's orbit
23
How many years does it take for our sun to orbit the center of the Milky Way?
It does not orbit the Milky Way
250 million years
365.25 days
13.75 billion years
24
A meteorite becomes a meteoroid when it strikes the Earth's surface
false
true
25
A star in its main sequence is NOT
fusing hydrogen
a black dwarf
middle age
