Exam 6: The Terrestrial Planets and Their Moons

The heat energy that powers tectonic activity on the surface of Earth originates deep in Earth's core.What is the main reason Earth's core does not cool rapidly as a result?

Mercury rotates once with respect to the distant stars in 59 days and has a sidereal period of 88 days.If a star is seen to be overhead to an observer on Mercury at midnight on a particular day,how many times will Mercury orbit the Sun before this star is again above the observer's head in a nighttime sky? (See Figure 6-44,Comins,Discovering the Essential Universe,6th ed.)

The main reason for the very high temperature (750 K)on the surface of the planet Venus is thought to be:

Although we do not yet know precisely how the Moon formed,an important clue is provided by the fact that:

The BEST estimate for the time of production of most craters on both Mercury and the Moon is:

Photosynthesis is a chemical process that takes place in green plants.What is its effect on our atmosphere?

What name is given to the layer of fine powder and rock fragments that cover the lunar surface?

A curious fact about the structure of the planet Jupiter,compared with the structure of Earth,is that it has:

Who FIRST postulated that continents drift around over Earth's surface?

The Mid-Atlantic Ridge is being produced by:

The albedo of Mercury is about 0.1.This means that:

The supercontinent Pangaea is believed to have been:

Suppose that observers using the Hubble Space Telescope detect around several solar-type stars the presence of planets with the following characteristics: low density,large size,fluid surfaces,rapid rotation.How would these planets be classified in terms of our solar system?

Why has Mercury become locked into a 3-to-2 spin orbit coupling instead of a 1-to-1 coupling like the Moon around Earth?

Observers in the nineteenth century reported seeing many straight-line features criss-crossing the surface of Mars and interpreted them to be canals constructed by intelligent beings.What is the MOST likely present-day explanation for these observations?

The time between two consecutive high tides at MOST places on Earth is:

An Earth-based telescopic view of Venus shows:

Mercury is unique among the inner planets in having:

Compared with the length of a solar day (time between successive sunrises)on Earth,the length of one solar "day" on Venus is:

When Venus is at its brightest as seen from Earth (near greatest elongation)it is: