A radiometric date is determined from mica that has been removed from a rock. What does the date signify if the mica is found in granite? What does the date signify if the mica is found in schist?
What will be an ideal response?
Answer: If the mica is found in granite, the date signifies the time of the granites crystallization. If the mica is found in schist, the date signifies the time of the last metamorphic event to affect that rock.
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Mass on a Spring: A 4.8-kg block attached to an ideal spring executes simple harmonic motion on a frictionless horizontal surface. At time t = 0.00 s, the block has a displacement of -0.90 m, a velocity of -0.80 m/s, and an acceleration of +2.9 m/s2. The force constant (spring constant) of the spring is closest to
A. 15 N/m. B. 14 N/m. C. 13 N/m. D. 12 N/m. E. 11 N/m.
At what phase would you expect to find extremely high and low tides?
A) first and third quarter B) full moon C) new moon D) both new and full moons E) Moon phases do not impact the tides.
Why was Voyager 2 an extremely efficient and productive probe?
What will be an ideal response?
The term magnetic declination refers to which of the following?
a. angle between Earth's magnetic field and Earth's surface b. Earth's magnetic field strength at the equator c. tendency for Earth's field to reverse itself d. angle between directions to true north and magnetic north