84
Earth and Moon Review Astronomy: Chapter 6 and 7
Earth and Moon Review
Astronomy: Chapter 6 and 7
The shifting of large blocks of the Earth's surface is usually referred to today as what?
A) The Dynamo Effect.
B) Continental Drift.
C) The Corilolis Effect.
D) Plate Tectonics.
The shifting of large blocks of the Earth's surface is usually referred to today as what?
A) The Dynamo Effect.
B) Continental Drift.
C) The Corilolis Effect.
D) Plate Tectonics.
What are the most common elements composing the Earth?
A) Hydrogen and helium.
B) Carbon and nitrogen.
C) Oxygen and silicon.
D) Uranium and plutonium.
What are the most common elements composing the Earth?
A) Hydrogen and helium.
B) Carbon and nitrogen.
C) Oxygen and silicon.
D) Uranium and plutonium.
About how hot is the core of the Earth?
A) 15 million K.
B) 15,000 K.
C) 6500 K.
D) 300 K.
About how hot is the core of the Earth?
A) 15 million K.
B) 15,000 K.
C) 6500 K.
D) 300 K.
The interior of the Earth is very hot because of _______.
A) fusion reactions
B) the radioactive decay of elements
C) oxidation
D) internal combustion
The interior of the Earth is very hot because of _______.
A) fusion reactions
B) the radioactive decay of elements
C) oxidation
D) internal combustion
Why isn't the Earth a perfect sphere?
A) Rotation causes the equator to bulge out.
B) Rotation causes the poles to bulge out.
C) The Earth's magnetic field causes the equator to bulge out.
D) The Earth is perfectly round.
Why isn't the Earth a perfect sphere?
A) Rotation causes the equator to bulge out.
B) Rotation causes the poles to bulge out.
C) The Earth's magnetic field causes the equator to bulge out.
D) The Earth is perfectly round.
What does the Greenhouse Effect cause?
A) It shields us from the Sun's ultraviolet rays.
B) It causes the Earth's surface and atmosphere to be warmer than they
would be otherwise.
C) It is the main source of the Earth's oxygen.
D) All of the above
What does the Greenhouse Effect cause?
A) It shields us from the Sun's ultraviolet rays.
B) It causes the Earth's surface and atmosphere to be warmer than they
would be otherwise.
C) It is the main source of the Earth's oxygen.
D) All of the above
What are the main constituents of the Earth's atmosphere?
A) Carbon dioxide and water vapor.
B) Hydrogen and helium.
C) Methane and ozone.
D) Nitrogen and oxygen.
What are the main constituents of the Earth's atmosphere?
A) Carbon dioxide and water vapor.
B) Hydrogen and helium.
C) Methane and ozone.
D) Nitrogen and oxygen.
The ozone layer protects us from
A) infrared radiation.
B) ultraviolet radiation.
C) gamma rays.
D) cosmic rays.
The ozone layer protects us from
A) infrared radiation.
B) ultraviolet radiation.
C) gamma rays.
D) cosmic rays.
On what plate of the crust is North America located? Which way is it moving?
A) Pacific; East.
B) Pacific; West.
C) North American; East.
D) North American; West.
On what plate of the crust is North America located? Which way is it moving?
A) Pacific; East.
B) Pacific; West.
C) North American; East.
D) North American; West.
What is happening when two plates are smashing into one another?
A) Subduction causes mountains to be built up; earthquakes and
volcanoes may also occur.
B) Rifting causes mountains to be built up; earthquakes and volcanoes
may also occur.
C) Precession causes mountains to be built up; earthquakes and
volcanoes may also occur.
D) Nothing.
What is happening when two plates are smashing into one another?
A) Subduction causes mountains to be built up; earthquakes and
volcanoes may also occur.
B) Rifting causes mountains to be built up; earthquakes and volcanoes
may also occur.
C) Precession causes mountains to be built up; earthquakes and
volcanoes may also occur.
D) Nothing.
How do we know the Earth has a liquid core?
A) Both S and P waves pass through it.
B) S waves pass through it, but P waves do not.
C) P waves pass through it, but S waves do not.
D) Because we have used X rays to probe it.
How do we know the Earth has a liquid core?
A) Both S and P waves pass through it.
B) S waves pass through it, but P waves do not.
C) P waves pass through it, but S waves do not.
D) Because we have used X rays to probe it.
Why is the inner core solid even though it is hotter than the outer liquid core?
A) This is not unusual: hotter things tend to be more solid.
B) The great pressure at Earth's center forces the atoms in the core
together, causing it to solidify.
C) Radioactivity cause liquid materials to become solid.
D) The dynamo effect causes ions in the Earth's interior to become
solid.
Why is the inner core solid even though it is hotter than the outer liquid core?
A) This is not unusual: hotter things tend to be more solid.
B) The great pressure at Earth's center forces the atoms in the core
together, causing it to solidify.
C) Radioactivity cause liquid materials to become solid.
D) The dynamo effect causes ions in the Earth's interior to become
solid.
Currents in the Earth's molten iron core create the planet's magnetic field. These current are probably caused by
A) rotational motion and radioactivity.
B) rotational motion and convection.
C) radioactivity and convection.
D) rifting and subduction.
Currents in the Earth's molten iron core create the planet's magnetic field. These current are probably caused by
A) rotational motion and radioactivity.
B) rotational motion and convection.
C) radioactivity and convection.
D) rifting and subduction.
How are the auroras related to the Earth's magnetic field?
A) The Earth's magnetic field "channels" solar particles toward our
poles, so that is where auroras are most common.
B) Auroras are a glow of the magnetic field caused by its vibration.
C) Solar particles directed into our atmosphere by the Earth's magnetic
field excite atoms in our upper
atmosphere. These atoms then emit light, which we see as auroras.
D) Both A and C
How are the auroras related to the Earth's magnetic field?
A) The Earth's magnetic field "channels" solar particles toward our
poles, so that is where auroras are most common.
B) Auroras are a glow of the magnetic field caused by its vibration.
C) Solar particles directed into our atmosphere by the Earth's magnetic
field excite atoms in our upper
atmosphere. These atoms then emit light, which we see as auroras.
D) Both A and C
How is the age of the Earth measured?
A) By counting tree rings.
B) By analyzing the strength of the Earth's magnetic field.
C) By studying the ratios of radioactive materials in rocks.
D) By measuring the amount of heat the planet emits into space.
How is the age of the Earth measured?
A) By counting tree rings.
B) By analyzing the strength of the Earth's magnetic field.
C) By studying the ratios of radioactive materials in rocks.
D) By measuring the amount of heat the planet emits into space.
The Moon is about one-quarter the diameter of the Earth. How does its mass compare?
A) The Moon is 1/4th as massive as Earth.
B) The Moon is 1/6th as massive as Earth.
C) The Moon is 1/32nd as massive as Earth.
D) The Moon is 1/81st as massive as Earth.
The Moon is about one-quarter the diameter of the Earth. How does its mass compare?
A) The Moon is 1/4th as massive as Earth.
B) The Moon is 1/6th as massive as Earth.
C) The Moon is 1/32nd as massive as Earth.
D) The Moon is 1/81st as massive as Earth.
The large dark areas on the Moon that form the face of the "Man in the Moon" are called what?
A) craters and rays
B) rilles
C) maria
D) all of the above
The large dark areas on the Moon that form the face of the "Man in the Moon" are called what?
A) craters and rays
B) rilles
C) maria
D) all of the above
Craters form when _________.
A) lunar volcanoes blow their tops
B) solid bodies such as asteroids strike the Moon's
surface.
C) pieces of the Moon fall off, leaving holes in its surface.
D) Both a and c.
Craters form when _________.
A) lunar volcanoes blow their tops
B) solid bodies such as asteroids strike the Moon's
surface.
C) pieces of the Moon fall off, leaving holes in its surface.
D) Both a and c.
What we call the Moon's surface layer?
A) regolith
B) rilles
C) maria
D) craters
What we call the Moon's surface layer?
A) regolith
B) rilles
C) maria
D) craters
What are rays?
A) Canyons, caused by lava flows or crustal cracking.
B) Long, light streaks of pulverized rock radiating
outward from craters.
C) Mountainous regions.
D) Areas with no craters at all.
What are rays?
A) Canyons, caused by lava flows or crustal cracking.
B) Long, light streaks of pulverized rock radiating
outward from craters.
C) Mountainous regions.
D) Areas with no craters at all.
The lunar highlands have more craters than the maria because __________.
A) the surface of the maria is liquid and craters quickly
disappear there.
B) the material composing the highlands is very soft and
easily cratered.
C) the maria are much younger than the highlands.
D) the maria are much older than the highlands.
The lunar highlands have more craters than the maria because __________.
A) the surface of the maria is liquid and craters quickly
disappear there.
B) the material composing the highlands is very soft and
easily cratered.
C) the maria are much younger than the highlands.
D) the maria are much older than the highlands.
How were the maria formed?
A) Maria were formed by ancient oceans on the Moon's
surface.
B) Maria formed from ash falls from long dead volcanoes.
C) Molten rock from the Moon's interior flooded the huge
basins after large impacts.
D) They were formed by the huge tidal interaction
between the Earth and Moon.
How were the maria formed?
A) Maria were formed by ancient oceans on the Moon's
surface.
B) Maria formed from ash falls from long dead volcanoes.
C) Molten rock from the Moon's interior flooded the huge
basins after large impacts.
D) They were formed by the huge tidal interaction
between the Earth and Moon.
Why doesn't the Moon have an atmosphere?
A) It never had volcanoes and the gravity is too weak to
hold a substantial atmosphere.
B) The blasts that formed the craters blew it away.
C) The Moon's atmosphere was drawn away from it by
Earth's stronger gravitational force.
D) The solar wind evaporated the Moon's atmosphere.
Why doesn't the Moon have an atmosphere?
A) It never had volcanoes and the gravity is too weak to
hold a substantial atmosphere.
B) The blasts that formed the craters blew it away.
C) The Moon's atmosphere was drawn away from it by
Earth's stronger gravitational force.
D) The solar wind evaporated the Moon's atmosphere.
Why is the Moon's surface cratered but the Earth's not?
A) The Moon's stronger magnetic field attracted more
iron asteroids.
B) Meteors bounce off the Earth's atmosphere.
C) Earth's impact craters have been mostly obliterated by
erosion and plate tectonics.
D) When the dinosaurs died, their remains filled all the
Earth's craters.
Why is the Moon's surface cratered but the Earth's not?
A) The Moon's stronger magnetic field attracted more
iron asteroids.
B) Meteors bounce off the Earth's atmosphere.
C) Earth's impact craters have been mostly obliterated by
erosion and plate tectonics.
D) When the dinosaurs died, their remains filled all the
Earth's craters.
How do most astronomers today believe the Moon formed?
A) The Moon is actually a planet that was drawn in and
captured by the Earth's gravitational force.
B) The Earth and Moon formed together as twin planets.
C) A Mars-sized object struck the young Earth, and the
ejected debris formed the Moon.
D) The Moon is a piece of the Earth that broke off while
the Earth was forming.
How do most astronomers today believe the Moon formed?
A) The Moon is actually a planet that was drawn in and
captured by the Earth's gravitational force.
B) The Earth and Moon formed together as twin planets.
C) A Mars-sized object struck the young Earth, and the
ejected debris formed the Moon.
D) The Moon is a piece of the Earth that broke off while
the Earth was forming.
If there is a high tide at noon, about when can you expect the next low tide?
A) at about 3 pm.
B) at about 6 pm.
C) around 9 pm.
D) at about midnight.
If there is a high tide at noon, about when can you expect the next low tide?
A) at about 3 pm.
B) at about 6 pm.
C) around 9 pm.
D) at about midnight.
The distance between the Earth and the Moon
A. Remains constant as the Moon orbits about the Earth.
B. Varies as the Moon orbits about the Earth.
The distance between the Earth and the Moon
A. Remains constant as the Moon orbits about the Earth.
B. Varies as the Moon orbits about the Earth.
Basalt, a dense congealed lava rock rich in iron, is the primary material
in the Moon's
A. Highlands.
B. Crust.
C. Maria.
D. Far side's regolith.
Basalt, a dense congealed lava rock rich in iron, is the primary material
in the Moon's
A. Highlands.
B. Crust.
C. Maria.
D. Far side's regolith.
Based on a comparison between the amount of cratering seen in the
highlands versus the maria, it is possible to conclude that the main
bombardment of the Moon occurred
A. Very recently.
B. About a million years ago.
C. About a billion years ago.
D. Shortly after the Moon formed a few billion years ago.
E. All throughout the history of the Moon.
Based on a comparison between the amount of cratering seen in the
highlands versus the maria, it is possible to conclude that the main
bombardment of the Moon occurred
A. Very recently.
B. About a million years ago.
C. About a billion years ago.
D. Shortly after the Moon formed a few billion years ago.
E. All throughout the history of the Moon.
Which statement about the Moon's orbit is true?
A. The Moon is in synchronous rotation as it orbits the Earth.
B. The Moon is in a geosynchronous orbit around the Earth.
C. The Moon's orbit is aligned with the Earth's orbit.
D. The Moon rotates in the opposite direction than it orbits the Earth.
Which statement about the Moon's orbit is true?
A. The Moon is in synchronous rotation as it orbits the Earth.
B. The Moon is in a geosynchronous orbit around the Earth.
C. The Moon's orbit is aligned with the Earth's orbit.
D. The Moon rotates in the opposite direction than it orbits the Earth.
If high tide is at noon, the next high tide will be at
A. Midnight.
B. 6 pm.
C. 6 am.
D. Noon tomorrow.
If high tide is at noon, the next high tide will be at
A. Midnight.
B. 6 pm.
C. 6 am.
D. Noon tomorrow.
How many times does the Moon rotate on its axis in one orbital period?
A. Only once.
B. Twice.
C. Several times.
D. The Moon does not rotate.
How many times does the Moon rotate on its axis in one orbital period?
A. Only once.
B. Twice.
C. Several times.
D. The Moon does not rotate.
From the observation that the same side of the Moon always faces the Earth, one can conclude that
A. The Moon does not rotate.
B. The Moon completes one rotation every day.
C. The Moon completes one rotation each time it completes an orbit
about the Earth.
From the observation that the same side of the Moon always faces the Earth, one can conclude that
A. The Moon does not rotate.
B. The Moon completes one rotation every day.
C. The Moon completes one rotation each time it completes an orbit
about the Earth.
Which of the following is not a kind of geological feature found on the Moon?
A. Scarp
B. Crater
C. Maria
D. Rille
Which of the following is not a kind of geological feature found on the Moon?
A. Scarp
B. Crater
C. Maria
D. Rille
One result of bombardment of the Moon's surface is a layer of broken, pulverized, and powdered rock called
A. Maria.
B. Regolith.
C. Basalt.
D. Lunar rays
One result of bombardment of the Moon's surface is a layer of broken, pulverized, and powdered rock called
A. Maria.
B. Regolith.
C. Basalt.
D. Lunar rays
The primary reason the Moon lacks an atmosphere is because.
A. The Moon is made up of the wrong kinds of rocks to release
atmospheric gases.
B. The Earth's gravity pulls away any atmosphere the Moon collects.
C. The Moon lacks sufficient gravity to retain an atmosphere.
D. There is no life on the Moon.
The primary reason the Moon lacks an atmosphere is because.
A. The Moon is made up of the wrong kinds of rocks to release
atmospheric gases.
B. The Earth's gravity pulls away any atmosphere the Moon collects.
C. The Moon lacks sufficient gravity to retain an atmosphere.
D. There is no life on the Moon.
Which of the following theories for the origins of the Moon is general accepted by astronomers?
A. The Moon formed alongside the Earth (the twin theory).
B. The Moon is the result of a collision between the Earth and a Mars
sized object in the early days of the Solar System (the collision theory).
C. The Moon was originally a bulge on the Earth that was flung off by
the rapidly spinning Earth (fission theory).
D. The Moon formed somewhere else and was later captured by the
Earth (capture theory).
Which of the following theories for the origins of the Moon is general accepted by astronomers?
A. The Moon formed alongside the Earth (the twin theory).
B. The Moon is the result of a collision between the Earth and a Mars
sized object in the early days of the Solar System (the collision theory).
C. The Moon was originally a bulge on the Earth that was flung off by
the rapidly spinning Earth (fission theory).
D. The Moon formed somewhere else and was later captured by the
Earth (capture theory).
If the Moon were farther from the Earth, compared to now, the tides would be
A. About the same as now.
B. Neap tides would be shallower, and spring tides would be taller than
now.
C. Less tall all the time.
D. Higher all the time.
If the Moon were farther from the Earth, compared to now, the tides would be
A. About the same as now.
B. Neap tides would be shallower, and spring tides would be taller than
now.
C. Less tall all the time.
D. Higher all the time.
Why do we always see only one side of the Moon?
A. The Moon does not rotate.
B. The Moon is tidally locked with the Earth.
C. The far (opposite) side only faces the Earth during the daytime when
the Sun's light outshines the Moon.
D. From time to time we see all the sides of the Moon from the Earth.
Why do we always see only one side of the Moon?
A. The Moon does not rotate.
B. The Moon is tidally locked with the Earth.
C. The far (opposite) side only faces the Earth during the daytime when
the Sun's light outshines the Moon.
D. From time to time we see all the sides of the Moon from the Earth.
When our Earth becomes tidally locked with the Moon, which of the following statements will be true?
A. The Moon will always be visible only from one side of the Earth.
B. There will be no eclipses.
C. The Moon will not go through phases.
D. An astronaut on the Moon would see only one side of the Earth.
E. Both A and D.
When our Earth becomes tidally locked with the Moon, which of the following statements will be true?
A. The Moon will always be visible only from one side of the Earth.
B. There will be no eclipses.
C. The Moon will not go through phases.
D. An astronaut on the Moon would see only one side of the Earth.
E. Both A and D.
