30 Jun the solar system
the solar system
QUESTION 1
Newton’s work on gravity supported the heliocentric view of the universe.
True
False
2 points
QUESTION 2
Some of our earliest writings about the nature of the universe come from the ancient Hindus.
True
False
2 points
QUESTION 3
Most of the universe is believed to be
dark energy
dark matter
baryonic material
3 points
QUESTION 4
A ___________ is a collection of dust and gas held together by gravity.
star
nebula
black hole
3 points
QUESTION 5
With advances in telescope technology, we can see that galaxies are moving _______ over time.
closer to each other
farther away from each other
in random directions
3 points
QUESTION 6
Define parallax in terms of the stars and explain why the positions of the stars appear different to us throughout the year.
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4 points
QUESTION 7
Explain how we believe that the planets formed.
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4 points
QUESTION 8
Our Sun is in the _______ of the Milky Way.
center
Orion Arm
Alpha Centauri cluster
3 points
QUESTION 9
The degree of flattening in a planet’s orbit is called its
rotation
eccentricity
gravitational collapse
3 points
QUESTION 10
Our solar system is part of which galaxy?
Andromeda
Milky Way
Aquarius
3 points
QUESTION 11
When the solar system formed, most of the mass ended up in the
planets
moons
Sun
3 points
QUESTION 12
Describe how sunlight travels to Earth and its role in life on Earth.
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4 points
QUESTION 13
The inner planets all have
impact craters
tectonic surface features
both of the above
3 points
QUESTION 14
The inner solar system contains the
Jovian planets
terrestrial planets and asteroids
dwarf planets like Pluto
3 points
QUESTION 15
The dark areas of the Moon are called the terrae, and they are made of basaltic lava.
True
False
2 points
QUESTION 16
The force of gravity that would act on your body is weaker on the Moon than on Earth because the Moon is smaller than Earth.
True
False
2 points
QUESTION 17
Explain how scientists hypothesize the Moon formed.
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4 points
QUESTION 18
Scientists believe the asteroids in the asteroid belt were never able to form a larger planet because of
their distance from the Sun
radiation from solar wind
gravitational interference from Jupiter
3 points
QUESTION 19
The mass of all the objects in the asteroid belt is larger than the mass of Earth.
True
False
2 points
QUESTION 20
What are some reasons that drive society’s exploration of space? Why do governments agree to spend billions of dollars to support space exploration?
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4 points
QUESTION 21
The strongest winds of any planet in the solar system are found on
Uranus
Earth
Neptune
3 points
QUESTION 22
Ganymede is a satellite of
Saturn
Jupiter
Neptune
3 points
QUESTION 23
The Great Red Spot on Jupiter is
caused by iron oxide soils
a giant storm
a massive volcanic eruption
3 points
QUESTION 24
Uranus and Neptune are made mostly of
silicate rocks
ice
plasma
3 points
QUESTION 25
Which mission landed the first humans on the Moon?
Apollo 11
Sputnik
Voyager
3 points
QUESTION 26
Which of the following is a goal of the U.S. Space Shuttle program?
get astronauts to permanent space stations
deliver satellites for exploratory research
both of the above
3 points
QUESTION 27
A main sequence star cools and expands. It must be entering which stage?
white dwarf
black dwarf
red giant
3 points
QUESTION 28
Main sequence stars have decreasing brightness with temperature.
True
False
2 points
QUESTION 29
On an HR diagram, very large stars tend to have high temperatures and high luminosities.
True
False
2 points
QUESTION 30
Almost all characteristics of a star are determined by its
position in its galaxy
closeness to other stars
initial mass
3 points
QUESTION 31
Which statement is true about the most massive stars?
They have shorter life spans than less massive stars.
They burn hydrogen slower than less massive stars.
They usually last hundreds of billions of years.
3 points
QUESTION 32
After a low-mass star burns all of its helium, it ejects a collection of gases called a
planetary nebula
black hole
pulsar
3 points
QUESTION 33
Stars spend about 90 percent of their lifetime fusing helium to make hydrogen.
True
False
2 points
QUESTION 34
Describe a neutron star and a pulsar.
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