WorksheetsMercury and Moon Review
Total questions: 13
Worksheet time: 7mins
What is the reason that it is so difficult to view Mercury from Earth?
Mercury is very dim.
Mercury can't be seen at night.
Mercury is often hidden by the Moon.
Mercury is always very close to the Sun.
Mercury experiences extreme high and low temperatures between night and day because:
it is so close to the Sun.
its dense atmosphere creates a runaway greenhouse.
Mercury has no axial tilt, with its equator always exposed to direct sunlight.
it has no atmosphere to moderate temperatures over the globe.
Which of the following is NOT a factor in determining whether a body in the solar system retains an atmosphere?
composition and weight of the gases
escape velocity
rotation rate
distance from the Sun
The lunar mare are found:
anywhere large meteor impacts created deep basins.
almost entirely on the far side, which was more likely to be hit.
almost entirely on the Earth side, where the crust was thinner.
mainly in the south polar region, where the largest impact occurred.
The lunar highlands are:
more rugged, heavily cratered, and older than the lunar mare.
made of lighter-colored, younger rocks than the mare.
formed by plate tectonics, like the Earth's Himalayas.
formed by volcanic eruptions, much like our Andes.
What causes Mercury's 3:2 spin-orbit resonance?
the planet's closeness to the Sun
the planet's very eccentric orbit
tidal torques operating on the planet
All of these are factors.
What is true of the Moon's orbital and rotational periods?
The rotational period is longer.
The orbital period is longer.
The rotational period varies with the Moon's phase.
They are equal.
The average rate of erosion on the Moon is far less than on Earth because
the crust of the Moon is much denser than the earth's crust.
the Moon is much younger than the earth.
the Moon lacks wind, water and an atmosphere.
the Moon's magnetic field protects it from the solar wind better than ours does.
The scarps (cliffs) on Mercury were probably caused by
the interior cooling and shrinking.
tectonic activity.
volcanism.
meteorite bombardment.
Mercury's surface most resembles which of these?
the earth's deserts
the lunar far side
the lunar mare
Venus' polar regions
What two properties of Mercury imply that it is differentiated?
Its size and magnetic field
Its large average density and its surface features
Its surface features and its size
Its large average density and its magnetic field
What are the major factors that rule out the co-formation theory for the Moon-Earth system?
Each body has different atmospheric content and a different density.
Each body has different chemical composition and different surface features.
Each body has a different density and a different chemical composition.
Each body has a different chemical composition and different atmospheric content.
The cratering of the lunar highlands shows us:
they are younger than the maria.
they are older than the smoother maria.
they have been unchanged for the last 4.6 billion years.
they were made of more rigid lavas than the basalts that made the maria.
