Which factor below determines the steepness of a volcano?
A) how easily the lava flows
B) the temperature of the lava
C) the duration of the eruption
D) the age of the volcano
E) the volume of lava
A) how easily the lava flows
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) Based on observations, which of the following statements about stars in the Milky Way is generally true?
A) the older the star, the lower its abundance of heavy elements B) the older the star, the bluer its color C) the older the star, the faster its orbital speed D) the younger the star, the higher its mass E) the less massive the star, the older it is
An image formed when the light rays do not actually pass through the image location, and would not appear on paper or film placed at that location is referred to as a(n)
A) real image. B) virtual image. C) imaginary image. D) positive image. E) negative image.
Saturn's belts and zones are obscured by haze high in its atmosphere
a. True b. False Indicate whether the statement is true or false
General Relativity: To what radius would the sun have to be compressed in order for it to become a black hole? The mass of the sun is 1.99 × 1030 kg, G = 6.67 × 10-11 N ? m2/kg2, and c = 3.00 × 108 m/s
A. 2950 m B. 1470 m C. 6.96 × 108 m D. 2.66 × 106 m E. 3.72 × 104 m