|
The slowly increasing distance between South America and Africa is due to |
seafloor spreading |
|
Old Faithful Geyser at Yellowstone National Park in the United States acquires its energy from |
a hot spot |
|
Layered _________exposed by erosion can be seen when looking at the Grand Canyon in the United States |
sedimentary rock |
|
Australia is composed of relatively old and thick |
continental crust |
|
The extremely deep ocean Marianas Trench is a result of |
subduction |
|
________found in the Atlantic Ocean between North America and Europe is composed of dense and relatively young rock. |
Seafloor crust |
|
The earthquakes that occur in Southern California generally occur above a |
fault |
|
Earth’s magnetic field is the result of our planet’s large, permanently magnetized iron core |
False |
|
The deepest that geologists have drilled into Earth is about the same as |
the altitude most commercial jet airplanes fly. |
|
If Earth had no Moon, then tides would |
occur with the same frequency, but would not be as strong |
|
Which of the following layers of the earth is unique among the terrestrial planets? |
hydrosphere |
|
What is true of spring tides? |
The difference between low and high tides would be greatest. |
|
At what phase are the tides least noticeable? |
third quarter |
|
What is true of the Moon’s orbital and rotational periods? |
They are equal |
|
Almost all of our atmospheric gases lie in the: |
troposphere. |
|
The critical part of the atmosphere for protecting life on the ground from excessive ultraviolet radiation is the: |
ozone layer. |
|
In what part of our atmosphere do we live? |
troposphere |
|
Without the greenhouse effect operating in our atmosphere, |
Earth would have an average temperature of -23 degrees Celsius. |
|
The average rate of erosion on the Moon is far less than on Earth because |
the Moon lacks wind, water and an atmosphere. |
|
We determine the structure of the Earth’s core using |
seismic wave data. |
|
Seismic waves are most useful for mapping: |
the Earth’s core and mantle. |
|
Which statement about seismic waves is true? |
P waves travel faster, and thus arrive sooner than do the S waves. |
|
The rate of cratering in the lunar highlands shows us that |
they range from 4.6 – 4.4 billion years old, on average. |
|
What is true of the lunar highlands? |
They are the oldest part of the lunar surface.. |
|
The presence of a magnetic field is a good indication that: |
we have a liquid metal outer core, spinning rapidly as we rotate |
|
When strong solar winds are displaced poleward by our magnetic fields, we get |
intense auroral displays. |
|
Earth’s magnetic field |
prevents charged particles in the solar wind from reaching the surface |
|
Which of these theories seems to best explain the Moon’s origin? |
Impact Theory |
|
Greenhouse gases in our atmosphere trap just enough heat to keep the earth’s oceans liquid. |
True |
|
The ozone layer is contained within the stratosphere. |
True |
|
Seismic P-waves can travel through both solid and liquid materials |
True |
|
Seismic S-waves can travel through Earth’s liquid outer core |
False |
|
In the past, most of the landmass on Earth was concentrated in a single, large continent. |
True |
|
When plates collide, they fuse together and come to rest |
False |
|
The lunar mare radioactively date back to 4.6 billion years, at the origin of the Moon, hence their dark color due to this aging |
False |
|
The atmospheric gases primarily responsible for our greenhouse effect are |
water vapor and carbon dioxide |
|
The lunar mare are found |
mainly on the near side |
|
The region in which charged particles are trapped by our magnetic fields is the |
Van Allen radiation belt |
|
Our Earth is about four times larger than the Moon in diameter |
True |
|
The Earth’s hotter, inner core is liquid and its cooler, outer core is solid |
False |
|
The tidal pull of the Moon is an example of a differential force, as the near and far sides of the Earth do not experience the same gravitational pull of the Moon |
True |
|
The Moon keeps one side facing the Earth because it doesn’t rotate on its axis |
False |
|
Weather occurs in the troposphere |
True |
|
The continuing rise of carbon dioxide concentration in our troposphere is leading to worldwide cooling as dry ice forms at the poles |
False |
|
The three most abundant gases in our atmosphere are nitrogen, oxygen, and argon |
True |
|
There is no evidence for plate tectonics on the Moon today |
True |
|
Most lunar craters are volcanic in origin |
False |
|
Today most scientists favor the capture theory of the Moon’s origin, since it would explain why the Moon still orbits in the ecliptic plane, as do other planets. |
False |
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