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 ______.
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.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Learn about Coordinated Universal Time, its accuracy and the countries that use it.
