Time and Time Zones

What was the first method of telling time?

• Water clocks

• Sundials

• Mechanical clocks

• Atomic clocks

What is the main limitation of a sundial?

• It can only be used at night

• It requires sunlight to function

• It is not accurate

• It can only be used indoors

Which device was commonly used on ships due to its stability?

• Candles

• Mechanical clocks

• Sundials

• Hourglasses

What significant advancement did the mechanical clock introduce?

• Use of water flow

• Use of sunlight

• Sand measurement

• Swing of a pendulum

What is the basis for scientific time today?

• Sundial shadows

• Hourglass sand flow

• Atomic clocks

• Mechanical pendulum

Why is keeping track of time important?

• For entertainment

• For historical records

• For regulating daily lives and global communication

• For cooking

What problem did different local times on the American railroad system present?

• Challenges in making train connections

• Issues with entertainment scheduling

• Difficulty in farming

• Confusion in trade

How many time zones are there on land?

• 24

• 40

• 50

• 26

What was the purpose of introducing time zones?

• To make sundials more accurate

• To improve the accuracy of mechanical clocks

• To standardize the measurement of incense burn time

• To smooth out communication and travel schedules

For how many hours does any given calendar date exist on the globe?

• 50 hours

• 48 hours

• 24 hours

• 72 hours