During a full Moon, where is the Moon relative to the Sun and the Earth?
A) at a 45 degree angle from the Sun
B) on the opposite side of the Earth from the Sun
C) on the opposite side of the Sun from the Earth
D) at a 90 degree angle from the Sun
E) between the Sun and the Earth
Ans: B) on the opposite side of the Earth from the Sun
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A nova is a new star
a. True b. False Indicate whether the statement is true or false
Suppose that, for some unknown reason, the core of the Sun suddenly became hotter and the rate of nuclear fusion thereby increased. What would happen next?
A) The Sun would quickly run out of hydrogen, causing the temperature to return to its original value. B) The rate of fusion would almost instantly skyrocket, causing the Sun to explode. C) The temperature would continue to increase, causing higher and higher fusion rates. D) The core would expand, reducing the pressure and temperature, and the rate of fusion would decrease until it returned to its original level.
While a rock thrown upward at 50 degrees to the horizontal rises, neglecting air drag, its vertical component of velocity
A) increases. B) remains unchanged. C) decreases.
Which statement about the motion of the planets is INCORRECT?
A) Most orbit above the Sun's equator. B) All revolutions of major planets are counterclockwise. C) The orbits of most planets are almost circular, with low eccentricities. D) Most planets move in the Earth's equatorial plane. E) Most planets rotate in the counterclockwise direction when viewed from the North.