In a folded sequence of rocks we find younger rocks at the axis of the fold and older rocks away from the fold axis. The fold is
A) called a syncline.
B) called an anticline.
C) plunging.
D) tilted.
Answer: A
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A charge q1 is placed on the y-axis at y = 4.0 m and the resulting potential at the position (3.0 m, 4.0 m) is 3.0 V. The charge q1 is removed and a charge q2 is placed on the x-axis at x = 3.0 m and the resulting potential at the position (3.0 m, 4.0 m) is 4.0 V. If both charges are in place simultaneously, what is the potential at (3.0 m, 4.0 m)?
A. 1.0 V B. 3.5 V C. 5.0 V D. 7.0 V E. 12 V
Two pairs of sunspots appear similar, but if one photo was made in 1990, and the next photo was made in 2002, what difference would we note?
What will be an ideal response?
A cylinder with its mass concentrated toward the center has a moment of inertia of 0.2MR2 . If this cylinder is rolling without slipping along a level surface with a linear speed v, what is the ratio of its rotational kinetic energy to its linear kinetic energy?
a. 1/l0 c. 1/2 b. 1/5 d. 1/1
Immediately after the Permian extinction event, the carbon dioxide and methane released by volcanism caused the Earth to
A) initiate a snowball Earth phase B) start an ice age C) begin a period of intense global warming D) completely change the composition of its atmosphere