The law of superposition states that in an undeformed sequence of sedimentary rocks the oldest rocks will be at the bottom while
the
youngest will be on top. Notice the word undeformed in the last sentence: that means the naturally occurring rock layers are
somehow altered, causing confusion or gaps in the geologic record. Changes to the rock strata can occur due to a variety of geologic
events. Which geologic event is INCORRECTLY identified?
es )
A)
A. Faulting due to stress and fracture.
B)
B. Folding of layers due to compression.
D. Intrusion of magma at Earth's surface
D)
C. Unconformity showing erosion and deposition
History of the Earth
No
youngest will be on top. Notice the word undeformed in the last sentence: that means the naturally occurring rock layers are
somehow altered, causing confusion or gaps in the geologic record. Changes to the rock strata can occur due to a variety of geologic
events. Which geologic event is INCORRECTLY identified?
es )
A)
A. Faulting due to stress and fracture.
B)
B. Folding of layers due to compression.
D. Intrusion of magma at Earth's surface
D)
C. Unconformity showing erosion and deposition
History of the Earth
No
2 answers:
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The object's speed will not change.
In fact, after the astronaut throws the object, no additional forces will act on it (since the object is in free space). According to Newton's second law:
where the first term is the resultant of the forces acting on the body, m is the mass of the object and a its acceleration, we see that if no forces act on the object, then the acceleration is zero. Therefore, the acceleration of the object is zero, and its velocity remains constant.
In fact, after the astronaut throws the object, no additional forces will act on it (since the object is in free space). According to Newton's second law:
where the first term is the resultant of the forces acting on the body, m is the mass of the object and a its acceleration, we see that if no forces act on the object, then the acceleration is zero. Therefore, the acceleration of the object is zero, and its velocity remains constant.