At the speed of light, how long would it take to go from Earth to the Sun?
a. about a second
b. about a minute
c. about 8 minutes
d. about a day
e. about a year
Answer: c. about 8 minutes
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Which of the following types of electromagnetic radiation has the smallest frequency?
a. x-rays b. visible light c. radio d. gamma-rays e. infrared radiation
Which of the following sequences correctly describes the stages of life (from beginning to end) for a low-mass star?
A) red giant, protostar, main-sequence, white dwarf B) protostar, main-sequence, red giant, white dwarf C) white dwarf, main-sequence, red giant, protostar D) protostar, main-sequence, white dwarf, red giant E) protostar, red giant, main-sequence, white dwarf
Which of the following is not a form of downslope movement?
a. Creep b. Mudflow c. Overburden d. Slump
A steel tube with diameters d2 5 86 mm and d1 5 52 mm is twisted by torques at the ends. The diameter of a solid steel shaft that resists the same torque at the same maximum shear stress is approxi-mately:
(A) 56 mm
(B) 62 mm
(C) 75 mm
(D) 82 mm