If your mass is 60 kg on Earth, what would your mass be on the Moon?
A) 10 lb B) 50 kg C) 10 kg D) 60 lb E) 60 kg
Question 2Suppose we imagine the Sun to be about the size of a grapefruit (about 10 cm across). Which of the following describes the size and distance of Earth on the same scale?
A) Earth is the size of a marble about 25 miles away from the Sun.
B) Earth is the size of a golf ball about 1 meter away from the Sun.
C) Earth is the size of a point about 1 meter away from the Sun.
D) Earth is the size of a point about 15 meters away from the Sun.
E) Earth is the size of a golf ball about 15 meters away from the Sun.
Question 3What is the acceleration of gravity at the surface of Earth?
A) 9.8 m2/s downward
B) 9.8 m/s downward
C) 9.8 km/s2 downward
D) 9.8 m/s2 downward
E) 9.8 km/s downward
Question 4Suppose we look at a photograph of many galaxies. Assuming that all galaxies formed at the same time after the Big Bang, which galaxy appears to us as the youngest?
A) the galaxy that is furthest from us
B) the galaxy that is closest to us
C) the galaxy that appears bluest to us
D) the galaxy that appears largest to us
E) All galaxies would appear to have the same age.
Question 5One light-hour is the distance that light travels in an hour. How far is this, in kilometers? (Recall that the speed of light is 300,000 km/s.)
A) 1.08 billion km
B) 18 million km
C) 100 million km
D) 300,000 km
E) 9.46 trillion km
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