Evidence that Mercury has a liquid core comes from
~ its stable dynamic magnetic field
Solar flares and coronal mass ejections are the result of
~ explosions on the sun when energy stored in the magnetic field is suddenly
released
Why can volcanoes on Mars reach extreme height
~ lack of tect...
An unconformity, like the one in the Kingston area, is best defined as:
✓✓✓✓~ a time gap in the rock record
Weathering produces minerals that are more stable at the Earth's surface,
which one is the most abundant product of the weathering process:
✓✓✓✓~ clay
Minerals with sheet structure:
✓✓✓✓~ muscovite, clay
Rocks that are likely to be well sorted:
,✓✓✓✓~ limestone
Main factor that controls the rate of weathering in rocks:
✓✓✓✓~ climate
Rocks that are most likely to contain feldspar grains:
✓✓✓✓~ arkose and granite
Abundant evidence of fossils of life-forms that made hard protective shells did
not appear in the geologic record
until how long ago?
✓✓✓✓~ 600 MYA
Where are fissure eruptions most prominent?
✓✓✓✓~ mid ocean ridges
The Hawaiian Islands are located where the Pacific plate is:
✓✓✓✓~ migrating over a hot spot
, Which of the following rock types has provided evidence for a change over
Earth history in the levels of
oxygen in the atmosphere?
✓✓✓✓~ banded iron formation
Rock most likely to be immature:
✓✓✓✓~ breccia
Absolute ages have been attached to the relative time scale by the
determination of:
✓✓✓✓~ radiometric ages of igneous rocks younger and older than sedimentary formations
. The Atlantic Ocean is opening up at a rate closest to;
✓✓✓✓~ 5cm/year
Unlike many other bodies in the Solar System, the Earth has a strong magnetic
field. Which feature of the Earth is responsible for the Earth having such a
magnetic field:
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