

Cesium Atomic Clocks and Timekeeping
Interactive Video
•
Physics, Science, Mathematics
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a unit of time?
Day
Hour
Meter
Year
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was one of the earliest methods used to measure time before clocks?
Atomic clocks
Digital clocks
Water clocks
Quartz watches
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who is credited with replacing traditional timekeeping devices with more accurate clocks?
Albert Einstein
Galileo Galilei
Nikola Tesla
Isaac Newton
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did Galileo discover about pendulums?
They can measure temperature
They are affected by the moon's gravity
Their oscillation time is constant for a given length
They are not useful in timekeeping
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the basis of the cesium atomic clock?
Periodic vibrations of a quartz crystal
Periodic vibrations of a cesium atom
Movement of the sun
Oscillation of a pendulum
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many vibrations of cesium atom radiation define one second in an atomic clock?
9,192,631,770
6,000,000,000
10,000,000,000
1,000,000,000
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What regulates the rate of a cesium atomic clock?
The sun's position
Vibrations of a balanced wheel
Vibrations of a cesium atom
Movement of water
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