Podcast
Questions and Answers
What is the estimated error of a UTC clock?
What is the estimated error of a UTC clock?
- One second in 100 years
- One second in 1 billion years
- One second in 10 years
- One second in 100 million years (correct)
Where is UTC primarily used?
Where is UTC primarily used?
- In parts of Greenland, Iceland, the UK, Ireland, 14 African countries and Antarctica (correct)
- In all countries across the globe
- In Asia and Australia
- Only in the UK and Ireland
What problem did Sir Sandford Fleming's idea of time zones solve?
What problem did Sir Sandford Fleming's idea of time zones solve?
- The problem of having too many time zones
- The problem of different countries having different times
- The problem of needing a standardized time (correct)
- The problem of time zones being too complicated
How many time zones are there in reality?
How many time zones are there in reality?
Why are time zones important?
Why are time zones important?
Coordinated Universal Time (UTC) is a standard which all our major ______ devices are set to.
Coordinated Universal Time (UTC) is a standard which all our major ______ devices are set to.
The Prime Meridian UTC is used in parts of ______, Iceland, the UK, Ireland, 14 African countries and Antarctica.
The Prime Meridian UTC is used in parts of ______, Iceland, the UK, Ireland, 14 African countries and Antarctica.
At 12:00 noon in these countries, the sun is directly ______.
At 12:00 noon in these countries, the sun is directly ______.
The scientist Sir Sandford Fleming came up with the idea of ______ in 1878.
The scientist Sir Sandford Fleming came up with the idea of ______ in 1878.
Move 15 degrees west and you will be in the time zone ______.
Move 15 degrees west and you will be in the time zone ______.
Flashcards
UTC clock error?
UTC clock error?
One second in 100 million years
Where is UTC used?
Where is UTC used?
Parts of Greenland, Iceland, the UK, Ireland, 14 African countries, and Antarctica.
Time zones solve what?
Time zones solve what?
The need for a standardized time across different locations.
How many time zones exist?
How many time zones exist?
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Why are time zones vital?
Why are time zones vital?
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UTC is used for?
UTC is used for?
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Prime Meridian UTC is used in
Prime Meridian UTC is used in
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Where is the sun at 12:00 noon in UTC countries?
Where is the sun at 12:00 noon in UTC countries?
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Sir Sandford Fleming invented
Sir Sandford Fleming invented
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West of UTC
West of UTC
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Study Notes
Coordinated Universal Time (UTC)
- UTC is a standard for timekeeping, with an estimated error of one second in 100 million years.
UTC Usage
- UTC is used in parts of Greenland, Iceland, the UK, Ireland, 14 African countries, and Antarctica.
- These countries lie on the Greenwich Meridian, also known as the Prime Meridian, an imaginary line that runs north to south across the globe.
Time Zones
- The concept of time zones was introduced by Sir Sandford Fleming in 1878 to standardize time while considering local conditions.
- Each 15-degree section of the globe becomes a time zone, with UTC being one zone.
- Moving 15 degrees east or west results in a new time zone (e.g., UTC+1 or UTC-1).
- In reality, there are more than 24 time zones, with some islands and parts of countries having zones in increments of 30 or 45 minutes.
Importance of Time Zones
- Time zones facilitate global connectivity and trade, making international transactions and travel more efficient.
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