Jovian moons are typically made of
A) solid ice
B) ice and rock
C) rock and iron
D) solid rock
B
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How is the existence of Earth's unique atmosphere explained?
A) The oxygen in Earth's atmosphere is a result of early life on Earth. B) Volcanic gases containing nitrogen were outgassed from Earth's interior. C) As Earth cooled, water vapor fell out of the atmosphere to form the oceans. D) Ultraviolet radiation from the Sun freed the hydrogen, allowing it to escape. E) When Earth formed, its atmosphere formed from the gases most common in the early solar system.
What is the difference in meaning between the terms weather and climate?
A) Weather refers to local conditions, and climate refers to global conditions. B) Weather refers to short-term variations in conditions, and climate refers to long-term variations in conditions. C) Weather refers to small storms, and climate refers to large storms. D) Weather refers to wind and rain, and climate refers to processes like convection. E) There is no difference between weather and climate.
Why don't we use "efficiency" for rating refrigerators, like we rate engines, instead of the Coefficient of Performance?
What will be an ideal response?
Which of the following technological advances was not useful in the 1930s to advance the study of nuclear reactions?