Which portion of the electromagnetic spectrum is used in a television?
a) infrared waves
b) X rays
c) radio waves
d) gamma waves
Answer: c) radio waves
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A mouse is running away from a cat at 0.75 m/s and, at 1.25 m from his mouse hole, he accelerates at a constant rate of 0.25 
until he reaches his hole safely. How long a time was required for him to cover the last 1.25 m?
A. 1.4 s B. 1.7 s C. 1.2 s D. 10 s
On average, approximately how fast do plates move with plate tectonics on Earth?
A) a few centimeters per year B) a few millimeters per century C) a few centimeters per century D) They do not move at all, except during earthquakes. E) a few kilometers per hour
When we look at an object that is 1,000 light-years away we see it
A) as it was 1,000 years ago. B) as it was 1,000 light-years ago. C) as it is right now, but it appears 1,000 times dimmer. D) looking just the same as our ancestors would have seen it 1,000 years ago.
Convert a speed of 4.50 km/h to units of ft/min. (1.00 m = 3.28 ft)
A) 0.246 ft/min B) 82.3 ft/min C) 246 ft/min D) 886 ft/min E) 165 ft/min