Question 1

The object shown is a/an _____________ of less than 240 pounds.

Accepted Answer

A)  meteor 
B)  comet 
C)  meteorite 
D)  satellite 
A)  meteor 
B)  comet 
C)  meteorite 
D)  satellite

Question 2

________________ hypotheses involve a rare event in the origin of the solar system.

Accepted Answer

The answer of ________________ hypotheses involve a rare event in...

Question 3

An extrasolar planet is

Accepted Answer

A)  a planet that orbits our Sun that we have not yet discovered. 
B)  one not needed for the formation of our solar system which is kept in a special area just in case. 
C)  a planet found orbiting around a star other than the Sun. 
D)  another name for an asteroid. 
E)  a planet extra close to our Sun. 
A)  a planet that orbits our Sun that we have not yet discovered. 
B)  one not needed for the formation of our solar system which is kept in a special area just in case. 
C)  a planet found orbiting around a star other than the Sun. 
D)  another name for an asteroid. 
E)  a planet extra close to our Sun.

Question 4

Which one of the following IS NOT a characteristic of terrestrial planets?

Accepted Answer

A)  low average density 
B)  orbits inside the asteroids 
C)  craters in old surfaces 
D)  small diameters 
E)  very few satellites 
A)  low average density 
B)  orbits inside the asteroids 
C)  craters in old surfaces 
D)  small diameters 
E)  very few satellites

Question 5

The streak seen in the sky against the Milky Way background is a/an _______________.

Accepted Answer

A)  meteoroid 
B)  meteor 
C)  meteorite 
D)  All of the other choices are correct. 
A)  meteoroid 
B)  meteor 
C)  meteorite 
D)  All of the other choices are correct.

Question 6

What observation made of other stars seems to suggest the solar nebula theory is correct?

Accepted Answer

A)  Stars are found to exist more often in binaries than by themselves. 
B)  Protostars are seen to radiate much of their light at infrared wavelengths. 
C)  Nearby stars tend to be low-mass red dwarfs. 
D)  Young stars are found to have hot disks that surround them. 
A)  Stars are found to exist more often in binaries than by themselves. 
B)  Protostars are seen to radiate much of their light at infrared wavelengths. 
C)  Nearby stars tend to be low-mass red dwarfs. 
D)  Young stars are found to have hot disks that surround them.

Question 7

Which planetary fact(s) is(are) explained by the solar nebula theory?

Accepted Answer

A)  The orbits are all approximately in the same plane 
B)  The orbits are all in the same direction 
C)  Jovian planets are mostly H and He 
D)  Terrestrial planets are mostly rock and iron 
E)  All of the other choices are correct. 
A)  The orbits are all approximately in the same plane 
B)  The orbits are all in the same direction 
C)  Jovian planets are mostly H and He 
D)  Terrestrial planets are mostly rock and iron 
E)  All of the other choices are correct.

Question 8

Evolutionary hypotheses suggest that planets form by natural and gradual processes.

Accepted Answer

A) True 
 B)False

Question 9

The Jovian problem is that gas and dust disks may not last long enough for Jovian planets to form by accretion and then by gravitational collapse.

Accepted Answer

A) True 
 B)False

Question 10

A newly formed planet or large asteroid becomes molten due to

Accepted Answer

A)  the last infalling objects. 
B)  decay of radioactive element isotopes. 
C)  the last infalling objects and decay of radioactive element isotopes. 
D)  none of the other choices as newly formed planets remain solid inside. 
A)  the last infalling objects. 
B)  decay of radioactive element isotopes. 
C)  the last infalling objects and decay of radioactive element isotopes. 
D)  none of the other choices as newly formed planets remain solid inside.

Question 11

After the first solid grains formed in our solar system, these particles could then grow by the process of ____________, the collision and sticking of one particle with another to continue the formation of planetesimals. Each of these has many atoms or molecules.

Accepted Answer

A)  accretion 
B)  sublimation 
C)  hydration 
D)  condensation 
E)  vaporization 
A)  accretion 
B)  sublimation 
C)  hydration 
D)  condensation 
E)  vaporization

Question 12

List and describe four differences between Jovians and Terrestrials.

Accepted Answer

Terrestrial planets are small,

Question 13

Venus is often called Earth's sister planet because it is similar to the Earth in terms of

Accepted Answer

A)  mass. 
B)  size. 
C)  density. 
D)  mass, size, and density. 
A)  mass. 
B)  size. 
C)  density. 
D)  mass, size, and density.

Question 14

On a photograph of the Moon, the Moon measures 30 cm in diameter and a small crater measures 0.2 cm. The Moon's physical diameter is 1738 km. What is the physical diameter of the small crater?

Accepted Answer

A)  about 1738 km 
B)  about 12 km 
C)  about 520 km 
D)  about 350 km 
E)  about 3.5 km 
A)  about 1738 km 
B)  about 12 km 
C)  about 520 km 
D)  about 350 km 
E)  about 3.5 km

Question 15

The asteroid belt is found between which two planets' orbits?

Accepted Answer

A)  Earth and Mars 
B)  Mars and Jupiter 
C)  Jupiter and Saturn 
D)  Venus and Earth 
A)  Earth and Mars 
B)  Mars and Jupiter 
C)  Jupiter and Saturn 
D)  Venus and Earth

Question 16

Accretion is

Accepted Answer

A)  the adding of material to an object an atom or molecule at a time. 
B)  the adding of material to an object by collection of solid particles. 
C)  the release of gas from rocks as they are heated. 
D)  the largest of the Galilean satellites. 
E)  caused by the bombardment of the solar wind. 
A)  the adding of material to an object an atom or molecule at a time. 
B)  the adding of material to an object by collection of solid particles. 
C)  the release of gas from rocks as they are heated. 
D)  the largest of the Galilean satellites. 
E)  caused by the bombardment of the solar wind.

Question 17

Which one of the following objects is most like the planetesimals that formed in the solar nebula?

Accepted Answer

A)  asteroids 
B)  Earth 
C)  Saturn 
D)  Venus 
E)  the Sun 
A)  asteroids 
B)  Earth 
C)  Saturn 
D)  Venus 
E)  the Sun

Question 18

The diagram below shows the radioactive decay of cesium (135Cs). What is the half-life of 135Cs?

Accepted Answer

Question 19

Compared to the terrestrial planets, Jovian planets

Accepted Answer

A)  have a higher density. 
B)  have a smaller number of moons. 
C)  have a much larger diameters. 
D)  are much hotter. 
A)  have a higher density. 
B)  have a smaller number of moons. 
C)  have a much larger diameters. 
D)  are much hotter.

Question 20

The period of the planet orbiting 51 Pegasi is about 9 days.

Accepted Answer

A) True 
 B)False

The object shown is a/an _____________ of less than 240 pounds.

________________ hypotheses involve a rare event in the origin of the solar system.

An extrasolar planet is

Which one of the following IS NOT a characteristic of terrestrial planets?

The streak seen in the sky against the Milky Way background is a/an _______________.

What observation made of other stars seems to suggest the solar nebula theory is correct?

Which planetary fact(s) is(are) explained by the solar nebula theory?

Evolutionary hypotheses suggest that planets form by natural and gradual processes.

The Jovian problem is that gas and dust disks may not last long enough for Jovian planets to form by accretion and then by gravitational collapse.

A newly formed planet or large asteroid becomes molten due to

After the first solid grains formed in our solar system, these particles could then grow by the process of ____________, the collision and sticking of one particle with another to continue the formation of planetesimals. Each of these has many atoms or molecules.

List and describe four differences between Jovians and Terrestrials.

Venus is often called Earth's sister planet because it is similar to the Earth in terms of

On a photograph of the Moon, the Moon measures 30 cm in diameter and a small crater measures 0.2 cm. The Moon's physical diameter is 1738 km. What is the physical diameter of the small crater?

The asteroid belt is found between which two planets' orbits?

Accretion is

Which one of the following objects is most like the planetesimals that formed in the solar nebula?

The diagram below shows the radioactive decay of cesium (¹³⁵Cs). What is the half-life of ¹³⁵Cs?

Compared to the terrestrial planets, Jovian planets

The period of the planet orbiting 51 Pegasi is about 9 days.

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

Exam 15: Origin of the Solar System and Extrasolar Planets

The object shown is a/an _____________ of less than 240 pounds.

________________ hypotheses involve a rare event in the origin of the solar system.

An extrasolar planet is

Which one of the following IS NOT a characteristic of terrestrial planets?

The streak seen in the sky against the Milky Way background is a/an _______________.

What observation made of other stars seems to suggest the solar nebula theory is correct?

Which planetary fact(s) is(are) explained by the solar nebula theory?

Evolutionary hypotheses suggest that planets form by natural and gradual processes.

The Jovian problem is that gas and dust disks may not last long enough for Jovian planets to form by accretion and then by gravitational collapse.

A newly formed planet or large asteroid becomes molten due to

After the first solid grains formed in our solar system, these particles could then grow by the process of ____________, the collision and sticking of one particle with another to continue the formation of planetesimals. Each of these has many atoms or molecules.

List and describe four differences between Jovians and Terrestrials.

Venus is often called Earth's sister planet because it is similar to the Earth in terms of

On a photograph of the Moon, the Moon measures 30 cm in diameter and a small crater measures 0.2 cm. The Moon's physical diameter is 1738 km. What is the physical diameter of the small crater?

The asteroid belt is found between which two planets' orbits?

Accretion is

Which one of the following objects is most like the planetesimals that formed in the solar nebula?

The diagram below shows the radioactive decay of cesium (135Cs). What is the half-life of 135Cs?

Compared to the terrestrial planets, Jovian planets

The period of the planet orbiting 51 Pegasi is about 9 days.

Here and Now

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus, and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

The diagram below shows the radioactive decay of cesium (¹³⁵Cs). What is the half-life of ¹³⁵Cs?