. a) 6:30 AM . b) 6:30 PM . c) 12:30 AM . d) 12:30 PM . e) None of these

2. (1 point) Which of the following has the greatest influence on the period of the simple harmonic motion of a pendulum?

. a) a change in the mass of the pendulum
. b) a change in the length of the pendulum
. c) a change in the geographic latitude on the earth
. d) a change in the elevation above sea level on the earth

3. (1 point) If the elastisity modulus of the mainspring of a watch was greatly increased

. a) the hands would fall off
. b) the watch would gain time
. c) the watch would lose time
. d) the accuracy of the timepiece would not change much

4. (1 point) For the better part of this century the United States has used daylight savings time; what was the purpose of the switch each spring and fall?

. a) so mean solar time is corrected for
. b) to save energy
. c) so Hawaii and other islands could have their own time zones
. d) so the ephermeris of 1899, 1900, and 1901 could be used throughout the century

5. (1 point) As horology progressed from the pendulum to the quartz oscillator, we increased the number of parts we divided into; which of the following is the most correct?

. a) this also increases accuracy as it allows a greater error factor without significant time loss
. b) the only change here was in the speed of the beat
. c) nothing really improved as the pendulum is still the most accurate
. d) accuracy stayed the same as we progressed, only the same size of the piece changed

6. (2 point) Which of the following would be closest to today's date. (May 21, 1994)

. a) fifth new moon of 1994
. b) fifth waxing gibbous moon of 1994
. c) fifth waning crescent of 1994
. d) second full moon post (after) vernal equinox
. e) sixth waxing crescent after lunar new year

7. (2 point) Most Western Countries use the Gregorian Calendar which is 365 days long and 366 days during leap years except when leap years are century years. Even with the leap year corrections and century year corrections the calendar is 26 seconds longer than the earth's orbital period. At that rate, how long would it take to add a full day?

. a) about 400 years . b) 332 years . c) 3323 years . d) 4.26 millenia

8. (1 point) We all use standard time in our lives every day; about how long have Americans used Standard Time?

. a) 100 years . b) 150 years . c) 200 years . d) since colonial times

9. (2 point) What ancient culture is credited with giving us the 12 hour, 60 minute, 60 second time indicating system?

. a) Chinese . b) Romans . c) Babylonians . d) Aztecs . e) Egyptians

10. (3 points) How many picoseconds in five millenia? (express in scientific notation)

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 .

 11. (3 points) Consider a waterclock which drips a drop every 0.250 seconds. If each drop is exactly 0.04 ml and the students allowed it to drip while they went to lunch; when they returned 2.110 liters of water had accumulated, how much time had elapsed?

.

 .

 .

 12. (2 points) If we take the period of a simple pendulum to be 2*Pi(L/g)^.5. What if the length of a penulum which a period of 3 minutes?

.

 .

 13. (4 points) A spacecraft is going away from the earth at a speed of 299,790,000 m/sec. How much time will elapse on the spacecraft for every 100 years on th earth?

.

 .

 14. (1 point) Convert 2315 hrs on a 24 hour clock to conventional 12 hour clock:

. a) 12:00 Noon . b) 23:15:00 P.M. . c) 11:15 P.M. . d) 11:15 A.M.

15. (2 point) Which of the following parts would never be found in a quartz watch?

. a) quartz crystal. b) circuit board. c) hands. d) hairspring. e) battery

16. (2 point) There are two basic types of watch dials; digital and analogue; which of the following statements if false regarding watch dials?

. a) only analogue watches have hands
. b) only digital dials use Roman numerals
. c) analogue watches use gears
. d) only digital watches ues LCD's

17. (1 point) The earliest mechanical clocks used what, to store energy to keep the oscillator moving?

. a) falling masses
. b) pinion gears
. c) tightly compressed coil springs
. d) the heat of the earth

18. (1 point each) List the time zones which pass through the continental United States.

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 .

 19. (2 points) The Apollo astronauts left reflectors on the moon. How long does it take for light to travel to the moon (380,000 km from earth), bounce off a reflector, and return?

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 .

 .

 20. (2 points) Fill in the blank- The whole world has the same day when___________________________________________________________________________________________________________________________

21. (3 points) If a ball is dropped from Olin Hall (approximate height 35 feet), how long will it take to hit the ground? (Neglect air resistance)

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 .

 .

 22. (1 point each) Match the following

____Su Sung . . . . . . . .a) 0.001 seconds
____a picosecond . . . . . b) a purely lunar calendar
____Mayan . . . . . . . . .c) latin for equal night
____Sandford Fleming . . . d) changes week from 8 days to 7 days
____a millisecond . . . . .e) calendar which uses all 3 astronomical cycles
____solstice . . . . . . . . f) 0.000000000001 seconds
____Moslem . . . . . . . . g) developed the World calendar
____Constantine . . . . . .h) latin for stopping of the sun
____a nanosecond . . . . . i) people who took their calendar from the Sumerians
____Elizabeth Achelis . . j) canadian who proposed time zones
____Babylonian . . . . . . k) 0.000000001 seconds
____equinox . . . . . . . .l) developed first mechanical clock