Physics

What was the primary role of dust in the formation of the solar system?

What was the primary role of dust in the formation of the solar system?

What was the primary role of dust in the formation of the solar system?
A) Dust formed the rings around Uranus, Neptune, and Jupiter.
B) Dust provided the radioactive elements that initially heated the Sun.
C) The Sun formed from a vas

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Dust is an important part of the nebular theory of solar system formation because dust is needed to

Dust is an important part of the nebular theory of solar system formation because dust is needed to

Dust is an important part of the nebular theory of solar system formation because dust is needed to explain:
A) why the icy bodies are located so far from the Sun.
B) how the inner planets came to be rocky bodies.
C) how the outer plan

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Conservation of angular momentum means that a spinning body tends to:

Conservation of angular momentum means that a spinning body tends to:

Conservation of angular momentum means that a spinning body tends to:
A) wobble into an eccentric orbit.
B) keep spinning.
C) fly apart.
D) slow down.
E) gravitationally collapse.

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What is the process of accretion?

What is the process of accretion?

What is the process of accretion?
A) the breakup of large objects by violent collisions with other similar-sized objects
B) the period of time during which the Sun swept away all the excess material in the solar nebula
C) the separati

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In light of modern solar system theory, why do the orbits of the planets all lie in the same plane?A

In light of modern solar system theory, why do the orbits of the planets all lie in the same plane?A

In light of modern solar system theory, why do the orbits of the planets all lie in the same plane?
A) The Sun's gravity forced them into these orbits.
B) This happened purely by chance.
C) The angular momentum of the solar system

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What happens when a solar nebula contracts?

What happens when a solar nebula contracts?

What happens when a solar nebula contracts?
A) It flattens out.
B) It heats up.
C) It spins faster.
D) All of the above.
E) None of the above.

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An alternative to the core-accretion theory that explains the formation of the jovian planets is the

An alternative to the core-accretion theory that explains the formation of the jovian planets is the

An alternative to the core-accretion theory that explains the formation of the jovian planets is the:
A) collision theory.
B) differentiation theory.
C) gravitational instability theory.
D) nebular contraction theory.
E) Big

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The jovian planets: (Multiple Choice)

The jovian planets: (Multiple Choice)

The jovian planets:
A) all spin slower than the Earth.
B) all have rings around their equators.
C) all lie less than 5 AU from the Sun.
D) have satellite systems with less than 4 moons.
E) are all much more dense than any of

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What is true about solar system densities?

What is true about solar system densities?

What is true about solar system densities?
A) Saturn has the same density as water.
B) The denser planets lie closer to the Sun.
C) The asteroids all have about the same density.
D) In differentiated bodies, the denser materials l

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A successful theory of the formation of the solar system must explain:

A successful theory of the formation of the solar system must explain:

A successful theory of the formation of the solar system must explain:
A) that the inner planets have more hydrogen and helium in their atmospheres than do the outer planets.
B) the existence of the asteroid belt between Jupiter and Neptune

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The meteorites that strike Earth are:

The meteorites that strike Earth are:

The meteorites that strike Earth are:
A) mostly made of iron.
B) material from outside our solar system.
C) the remains of the planet between Mars and Jupiter.
D) the oldest rocks known.
E) pieces of comets that fall to Earth

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What might have made the original solar nebula begin to contract?

What might have made the original solar nebula begin to contract?

What might have made the original solar nebula begin to contract?
A) the large amount of angular momentum in the nebula
B) the formation of our arm of the Milky Way
C) the Big Bang
D) the shock wave from a nearby exploding star

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Which of these is NOT a characteristic of the solar nebula theory?

Which of these is NOT a characteristic of the solar nebula theory?

Which of these is NOT a characteristic of the solar nebula theory?
A) The ecliptic is the equator for the Sun.
B) Larger planets should form closer to their star, where there is more debris.
C) Planets should rotate counterclockwise as

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What is the role of irregularities in the solar system in terms of theories of its origin?

What is the role of irregularities in the solar system in terms of theories of its origin?

What is the role of irregularities in the solar system in terms of theories of its origin?
A) Theories of the solar system are entirely based on the many irregularities found among the planets and moons.
B) The solar system has no irregular

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The Kuiper Belt is found where in the solar system?

The Kuiper Belt is found where in the solar system?

The Kuiper Belt is found where in the solar system?
A) between the orbits of Jupiter and Uranus
B) between the orbits of Mars and Jupiter
C) among the orbits of the terrestrial planets
D) beyond the orbit of Neptune
E) sixty

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Which objects in the solar system have been least modified since the formation of the solar system?A

Which objects in the solar system have been least modified since the formation of the solar system?A

Which objects in the solar system have been least modified since the formation of the solar system?
A) jovian moons
B) asteroids
C) Kuiper Belt objects
D) terrestrial planets
E) meteoroids

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The "Grand Tour" of all four jovians was conducted by:

The "Grand Tour" of all four jovians was conducted by:

The "Grand Tour" of all four jovians was conducted by:
A) Voyager 1 and 2 both.
B) Galileo.
C) Cassini.
D) Voyager 2.
E) Pioneer 11.

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Which spacecraft gave or is giving us our best information about Mercury?

Which spacecraft gave or is giving us our best information about Mercury?

Which spacecraft gave or is giving us our best information about Mercury?
A) Voyager I      B) Viking 2      C) Mariner 10      D) Messenger      E) Pioneer 10

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Which of these spacecraft went into orbit about Saturn in July 2004?

Which of these spacecraft went into orbit about Saturn in July 2004?

Which of these spacecraft went into orbit about Saturn in July 2004?
A) Galileo
B) Cassini
C) New Horizons
D) Voyager 2
E) NEAR-Shoemaker

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A gravitational "sling-shot":

A gravitational "sling-shot":

A gravitational "sling-shot":
A) changes the speed and direction of a spacecraft nearing a massive planet.
B) allowed the Apollo astronauts to reach the Moon in 1969.
C) causes comets to crash into planets, such as Jupiter in

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Which of the following is considered "interplanetary matter"?

Which of the following is considered "interplanetary matter"?

Which of the following is considered "interplanetary matter"?
A) Titan
B) Ganymede
C) the Moon
D) Comet Hale-Bopp
E) Triton

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Objects in the Kuiper belt:

Objects in the Kuiper belt:

Objects in the Kuiper belt:
A) lie beyond the orbit of Neptune and perpendicular to the ecliptic.
B) are in random orbits at all inclinations to the ecliptic.
C) are dense, like the iron meteorites.
D) lie beyond the orbit of Nept

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A meteorite is: (Multiple Choice)

A meteorite is: (Multiple Choice)

A meteorite is:
A) a chunk of space debris that has struck the ground.
B) an icy body with a long tail extending from it.
C) an irregularly shaped body, mostly found orbiting between Mars and Jupiter.
D) a chunk of space debris or

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Which of the following have an icy composition?

Which of the following have an icy composition?

Which of the following have an icy composition?
A) the surface of Mars
B) comets
C) meteoroids
D) most asteroids
E) meteorites and most asteroids

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The Kuiper Belt is an "outer asteroid belt" consisting of what types of solar system bodies?

The Kuiper Belt is an "outer asteroid belt" consisting of what types of solar system bodies?

The Kuiper Belt is an "outer asteroid belt" consisting of what types of solar system bodies?
A) terrestrial planets
B) icy cometlike bodies
C) asteroids
D) meteoroids
E) jovian planets

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The most detailed look we've had of an asteroid comes from:

The most detailed look we've had of an asteroid comes from:

The most detailed look we've had of an asteroid comes from:
A) high-altitude UV spectroscopy.
B) Earth orbital X-ray images.
C) ground based optical images.
D) ground based radar images.
E) spacecraft sent to an asteroid

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The smallest sort of interplanetary matter is called:

The smallest sort of interplanetary matter is called:

The smallest sort of interplanetary matter is called:
A) an asteroid.
B) a Kuiper Belt Object.
C) a comet.
D) a meteoroid.
E) interplanetary dust.

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The difference between a meteoroid and an asteroid is the object's:

The difference between a meteoroid and an asteroid is the object's:

The difference between a meteoroid and an asteroid is the object's:
A) shape.
B) composition.
C) size.
D) location in the solar system.
E) orbital period.

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In composition, asteroids and meteoroids are most like:

In composition, asteroids and meteoroids are most like:

In composition, asteroids and meteoroids are most like:
A) terrestrial planets.
B) jovian planets.
C) the moons of Jupiter.
D) Kuiper Belt objects.
E) comets.

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In composition and density, the asteroids most resemble:

In composition and density, the asteroids most resemble:

In composition and density, the asteroids most resemble:
A) pieces of terrestrial planets.
B) comets.
C) jovian moons.
D) Kuiper Belt objects like Pluto.
E) the Sun.

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The Kuiper Belt is found where in the solar system?

The Kuiper Belt is found where in the solar system?

The Kuiper Belt is found where in the solar system?
A) between the orbits of Jupiter and Uranus
B) among the orbits of the terrestrial planets
C) sixty degrees ahead of or behind Jupiter
D) beyond the orbit of Neptune
E) betw

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The jovian planets: (Multiple Choice)

The jovian planets: (Multiple Choice)

The jovian planets:
A) all have rings around their equators.
B) are all much more dense than any of the terrestrials planets.
C) have satellite systems with less than 4 moons.
D) all lie less than 5 AU from the Sun.
E) all sp

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Which of the characteristics below describes the terrestrial planets?

Which of the characteristics below describes the terrestrial planets?

Which of the characteristics below describes the terrestrial planets?
A) small, dark and icy
B) large and gaseous
C) possessing weak magnetic fields
D) having rings
E) widely spaced through the outer solar system

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In composition, mass, and density, Jupiter is most like:

In composition, mass, and density, Jupiter is most like:

In composition, mass, and density, Jupiter is most like:
A) a gigantic asteroid.
B) a large terrestrial planet.
C) the Sun.
D) a huge Kuiper belt Object.
E) a huge comet.

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Which of the following are the jovian planets?

Which of the following are the jovian planets?

Which of the following are the jovian planets?
A) only Jupiter
B) Jupiter, Saturn, Uranus, Neptune, and Pluto
C) everything past Mars and the asteroid belt
D) Jupiter, Saturn, Uranus, and Neptune only
E) only Jupiter and Satu

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Planetary orbits: (Multiple Choice)

Planetary orbits: (Multiple Choice)

Planetary orbits:
A) are almost circular, with low eccentricities.
B) have the Sun at their exact center.
C) are spaced more closely together as they get further from the Sun.
D) are evenly spaced throughout the solar system.

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Mercury's most unusual orbital feature, as compared to the other planets, is:

Mercury's most unusual orbital feature, as compared to the other planets, is:

Mercury's most unusual orbital feature, as compared to the other planets, is:
A) its orbital period.
B) that it has no moons.
C) the size of its orbit.
D) the shape of its orbit.
E) the size of the planet.

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Which statement about the motion of the planets is incorrect?

Which statement about the motion of the planets is incorrect?

Which statement about the motion of the planets is incorrect?
A) Most planets move in the Earth's equatorial plane.
B) All revolutions of major planets are counterclockwise.
C) The orbits of most planets are almost circular, with

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The rotation periods of Venus, Jupiter, Saturn, Uranus and Neptune are difficult to determine becaus

The rotation periods of Venus, Jupiter, Saturn, Uranus and Neptune are difficult to determine becaus

The rotation periods of Venus, Jupiter, Saturn, Uranus and Neptune are difficult to determine because:
A) they are all gas giants.
B) they rotate so fast.
C) their surface features are obscured by their atmospheres.
D) they are so

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The average density of each planet in the solar system is determined by taking its mass and dividing

The average density of each planet in the solar system is determined by taking its mass and dividing

The average density of each planet in the solar system is determined by taking its mass and dividing that by its:
A) radius.
B) diameter.
C) volume.
D) surface area.
E) radius squared.

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