question

Asteroids were recently formed by the collision and breakup of an object orbiting in the asteroid belt.

answer

False

question

The solar system is of largely uniform composition.

answer

False

question

The total mass of all the planets is much less than the mass of the Sun.

answer

True

question

Most comets have short periods and orbit close to the ecliptic plane.

answer

False

question

The largest planets also have the largest densities.

answer

False

question

In the leading theory of solar system formation, the planets a) are much older than the Sun. b) formed from the same flattened, swirling gas cloud that formed the Sun. c) were ejected from the Sun following a close encounter with another star. d) are much younger than the Sun.

answer

b) formed from the same flattened, swirling gas cloud that formed the Sun.

question

Earth's magnetic field is the result of our planet's large, permanently magnetized iron core.

answer

False

question

Except for the layer of air closest to Earth's surface, the ozone layer is the warmest part of the atmosphere.

answer

True

question

Volcanic activity continues today on the surface of the moon.

answer

False

question

Like Earth, the Moon has a molten metal core.

answer

False

question

Motion of the crustal plates is driven by convection in Earth's upper mantle.

answer

True

question

Mars has the largest volcanoes in the solar system.

answer

True

question

Mercury's solar day is longer than its solar year.

answer

True

question

Evidence of lava flows is common on the surface of Venus.

answer

True

question

Valles Marineris is comparable in size to Earth's Grand Canyon.

answer

False

question

There are many indications of plate tectonics on Mars.

answer

False

question

Mercury's large overall density suggests that the planet A) is younger than the Moon. B) has an interior structure similar to that of Earth's moon. C) has a weaker magnetic field that the Moon. D) has a dense metal core.

answer

D) has a dense metal core

question

Venus's surface is permanently obscured by clouds. As a result, the surface has been studied primarily by A) radar signals from Earth. B) robotic landers. C) orbiting satellites using radar. D) spectroscopy.

answer

C) Orbiting satellites using radar

question

In terms of area, the extinct Martian volcano Olympus Mons is about the size of A) North America. B) Earth's Moon. C) Colorado. D) Mt. Everest.

answer

C) Colorado

question

The main constituent of Jupiter's atmosphere is A) hydrogen. B) carbon dioxide. C) ammonia. D) helium

answer

A) hydrogen

question

Compared to Earth, Saturn's core is roughly A) twice as massive. B) the same mass. C) half the mass. D) 10 times more massive.

answer

D) 10 times more massive

question

Most asteroids are found a) beyond the orbit of Neptune. b) between Earth and the Sun. c) between Mars and Jupiter. d) in the orbit of Jupiter, but 60 degrees ahead or behind it. e) orbiting the Jovian planets in captured,retrograde orbits.

answer

C) Between Mars and Jupiter

question

The condensation sequence theory explains why a) our planet Earth has water and rain. b) stars are more likely to form large planets orbiting very near. c) terrestrial planets are different from jovian planets. d) the Moon formed near to Earth. e) Pluto has such a circular orbit.

answer

C) Terrestrial planets are different from Jovian planets

question

Which of the following are terrestrial planets? a) only Earth b) Earth, Moon, and Venus c) Mercury,Venus, Earth, and Mars d) Mercury,Venus, Earth, Moon, Mars, and Pluto e) Mercury,Venus, Earth, Moon, Mars, and Ceres

answer

C) Mercury, Venus, Earth, and Mars

question

The terrestrial (inner) planets are characterized by a) low density b) rapid rotation c) large size d) rocky composition

answer

D) rocky composition

question

What causes a meteor shower? a) A comet and an asteroid collide. b) Earth runs into a stray swarm of asteroids. c) Earth runs into the debris of an old comet littering its orbit. d) Meteorites are ejected from the Moon. e) Debris from a supernova enters Earth's atmosphere

answer

C) Earth runs into the debris of an old comet littering its orbit

question

The Moon's internal structure is similar to Earth's, but the Moon lacks a) an atmosphere. b) a hydrosphere. c) a magnetosphere. d) It lacks all of the above.

answer

D) It lacks all of the above

question

What is the most abundant gas in Earth's atmosphere? a) oxygen b) hydrogen c) nitrogen d) carbon dioxide e) argon

answer

C) nitrogen (78%)

question

A planetary atmosphere with ozone could protect surface dwellers from a) ultraviolet radiation. b) charged particles in the solar wind. c) meteor impacts. d) optical radiation. e) radar waves.

answer

A) ultraviolet radiation

question

As seen from the Moon, how often does the Sun rise? a) never b) about every 24 hours c) about once per week d) about once per month e) about once per year

answer

D) about once per month

question

The principal greenhouse gasses in our present atmosphere are a) hydrogen and helium. b) oxygen and nitrogen. c) water vapor and carbon dioxide. d) methane and ammonia. e) sulfuric acid vapor and CO2.

answer

C) water vapor and carbon dioxide

question

The region around Earth where the magnetic field traps charged particles is the a) ozone layer. b) exosphere. c) Van Allen radiation belts. d) corona. e) aurora borealis and australis.

answer

C) Van Allen radiation belts

question

Without the greenhouse effect in our atmosphere a) we would not have to worry about ecological problems. b) the Earth's oceans would be frozen. c) the amount of nitrogen & oxygen would be much less. d) the icecaps would have melted. e) global warming would still occur.

answer

B) the earths ocean would be frozen

question

Lunar maria are found a) uniformly all over the Moon. b) mostly on the side facing Earth. c) mostly on the far side of the Moon. d) only in the dark areas, out of sunlight. e) in the highlands, among mountains.

answer

B) mostly on the side facing the earth

question

Which statement about the rotations of Mercury and the Moon is FALSE? a) Our Moon keeps the same side toward us. b) The rotation period of Mercury is 59 EARTH days. c) Like our Moon, Mercury keeps the same side facing the Sun. d) On Mercury, three rotations ("sidereal days") equals two Mercurial "years" e) On the Moon, sunlight lasts for about 15 EARTH days in a row.

answer

C) like our moon, Mercury keeps the same side facing the sun

question

Mercury is very hard to observe from Earth because a) it always appears only half lit. b) it is never more than 28° from the Sun. c) its elliptical orbit causes it to change speed unpredictably. d) its surface reflects too little sunlight. e) its surface does not allow radar to bounce back to Earth.

answer

B) it is never more than 28° from the sun

question

Mercury has extreme high and low temperatures between night and day because a) it is so close to the Sun. b) its surface rocks don't retain heat. c) it spins too fast to cool down. d) Mercury's axis has no tilt; its equator receives direct sunlight. e) it has no atmosphere to moderate temperatures over the globe.

answer

E) it has no atmosphere to moderate temperatures over the globe Mercury's very high sunlit surface temperature of 700 K, and low mass, explain why it has no atmosphere.

question

Which of the following inner solar system bodies has the densest atmosphere? a) Mercury b)Venus c) Earth d) Moon e) Mars

answer

B) venus

question

Venus and Mars probably evolved differently from Earth because a) they are slightly bigger than Earth. b) they are more massive than Earth. c) they have thicker atmospheres than Earth. d) they formed sooner than Earth. e) they orbit at different distances from the Sun.

answer

E) they orbit at different distances from the sun

question

Which of the following are correct? a) Mars is essentially in the same orbit as Earth. b) There are canals filled with liquid water on Mars. c) If there is water, that means there is oxygen and therefore we can breath on Mars. d) Both (b) and (c) are true. e) None of the above.

answer

E) none of the above are true

question

Which of the following inner solar system bodies has the largest volcanoes? a) Mercury b)Venus c) Earth d) Mars e) Moon

answer

D) mars

question

Venus' surface shows all of the following EXCEPT a) many impact craters of all sizes. b) shield volcanoes. c) a continent-sized plateau. d) huge circular volcanic coronae. e) lava domes.

answer

A) many impact craters of all sizes Venus' thick atmosphere shields the planet from smaller meteor impacts.

question

The Jovian planets have retained most of their atmospheres because a) they are further from the Sun's gravitational pull than the terrestrial planets b) they are very warm and massive c) they are very cold and massive d) the planet's rings "fence in" the planetary atmosphere

answer

C) they are very cold and massive

question

The solid surface of Jupiter lies just below the cloud layers that are visible from Earth.

answer

False

question

Although often referred to as a gaseous planet, Jupiter is mostly liquid in its interior.

answer

True

question

Jupiter emits more energy than it receives from the Sun.

answer

True

question

Around northern midsummer on Uranus, an observer near the north pole would observe the Sun high and almost stationary in the sky.

answer

True

question

Neptune probably does not have a rocky core.

answer

True

question

The Jovian planets are characterized by their a) high density. b) slow rotation. c) small size. d) composition - mainly hydrogen and helium.

answer

d) Composition- Mainly hydrogen and helium

question

What is the source of Jupiter's large magnetic field? a) charged particles moving in the atmosphere b) thermonuclear fusion in Jupiter's core c) the gravitational attraction of Jupiter's many large moons d) the Great Red Spot e) metallic hydrogen swirling in its interior

answer

E) metallic hydrogen swirling in its interior

question

Saturn radiates even more excess energy than Jupiter because a) Saturn is still radiating heat left over from its formation. b)Saturn's thick cloud layer contributes to a larger greenhouse effect. c) helium rain gives off heat as it falls toward Saturn's center. d) Saturn's atmosphere contains methane. e)Saturn can fuse hydrogen into helium in its core, like the Sun.

answer

c) helium rain gives off heat as it falls toward Saturn's center.

question

Astronomers have no theoretical explanation for the "Hot Jupiter" observed orbiting some other stars

answer

False

question

Asteroids, meteoroids, and comets are remnants of the early solar system

answer

True

question

Luna maria are extensive lava-flow regions

answer

True

question

Because of tidal forces, the moon is in a synchronous orbit around earth

answer

True

question

There is strong circumstantial evidence that active volcanism continues on venus

answer

True

question

numerous surface features on venus can be seen in Earth-Based images made in the ultraviolet part of the spectrum

answer

False

question

The element of helium plays an important role in producing Saturn's atmospheric colors

answer

False- 75% hydrogen. sulfur gives it the orange color

question

Sunlight absorbed by Earth's surface is reemitted in the form of a) ultraviolet radiation. b) visible radiation. c) microwave radiation. d) infrared radiation.

answer

d) infrared radiation.

question

The most likely theory of the formation of the Moon is that it a) formed from a collision of Earth with a Mars-sized object. b) was formed by the gravitational capture of a large asteroid. c) formed simultaneously with Earth's formation. d) was created from a collision scooping out the Pacific Ocean.

answer

a) formed from a collision of Earth with a Mars-sized object.

question

Storms in the jovian planets' atmospheres are generally much longer lived than storms on Earth.

answer

True

question

The solar system is differentiated because a) the light elements in the inner solar system fell into the Sun. b) The light elements in the inner solar system were carried off as comets. c) only rocky and metallic particles could form close to the sun d) the heavy elements in the outer solar system sank to the center.

answer

c) only rocky and metallic particles could form close to the Sun.

question

Sunlight absorbed by Earth's surface is reemitted in the form of a) microwave radiation. b) ultraviolet radiation. c) infrared radiation. d) visible radiation

answer

c) infrared radiation.

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