Drumlins are made of
A) bedrock.
B) ice.
C) drift.
D) striations.
Answer: C
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Which of the following forms of energy is the greatest for a system of a comet in orbit about the Sun during perihelion (the comet's closest approach to the Sun)
1.the total mechanical energy 2.the potential energy 3.the kinetic energy 4.none of these
As Earth evolved with life, an oxygen abundance of only 0.1 percent would have created a(n) _______________, protecting organisms from the Sun's ultraviolet radiation
Fill in the blank(s) with correct word
Significant Figures: The length and width of a rectangle are 1.125 m and 0.606 m, respectively. You calculate the rectangle's perimeter by adding these numbers and multiplying by two. Your calculator's display reads 3.462. To the correct number of significant figures, the perimeter should be written as
A. 3.5 m. B. 3.46 m. C. 3.462 m. D. 3.4620 m.
Conductors: A conductor is placed in a steady external electric field. Which of the following statements are correct for this situation? (There could be more than one correct choice.)
A. The electric field is zero inside the conductor. B. All the free electrons go to the surface of the conductor. C. The surface of the conductor is neutral. D. The electric field just outside the surface of the conductor is perpendicular to the surface. E. None of these statements are correct.