Most types of chondrites contain _______________, small bits of glassy rock only a few millimeters across
Fill in the blank(s) with correct word
chondrules
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Why do the patterns of the stars in our sky look the same from year to year?
A) because the stars in the constellations move so slowly-typically about the speed of a snail-that their motions are not noticeable B) because the stars in the constellations are so far away C) because the stars in the constellations are not moving D) because the stars in the constellations all move at the same speeds and in the same directions, so they don't change their relative positions
The relative humidity is 100% when
a. the psychrometer wet-bulb temperature is depressed. b. the actual moisture content is equal to the maximum moisture capacity. c. the air temperature is above the dew point temperature. d. the air temperature is 100°F.
A camera lens that covers the film with a wider field of view than that of the eye and through which objects appear smaller is referred to as a
A) normal lens. B) telephoto lens. C) wide-angle lens. D) zoom lens. E) digital lens.
A lightweight object and a very heavy object are sliding with equal speeds along a level frictionless surface. They both slide up the same frictionless hill. Which rises to a greater height?
A) The heavy object, because it has greater kinetic energy. B) The light object, because it has smaller kinetic energy. C) The lightweight object, because it weighs less. D) The heavy object, because it weighs more. E) They both slide to the same height.