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Questions and Answers
Which unit of time is used to define the length of a day on Earth?
Which unit of time is used to define the length of a day on Earth?
- Hour (correct)
- Second
- Minute
- Millisecond
What unit of time is commonly used to measure the length of a month?
What unit of time is commonly used to measure the length of a month?
- Week
- Year
- Hour
- Day (correct)
Which unit of time is used to define the length of a year?
Which unit of time is used to define the length of a year?
- Day
- Week
- Month (correct)
- Hour
Which of the following time periods is defined based on the Earth's rotation on its axis?
Which of the following time periods is defined based on the Earth's rotation on its axis?
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Which of the following time periods is defined based on the Earth's orbit around the Sun?
Which of the following time periods is defined based on the Earth's orbit around the Sun?
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Which of the following time periods is the longest?
Which of the following time periods is the longest?
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Study Notes
Time Units on Earth
- The unit of time used to define the length of a day on Earth is a solar day.
- A month is commonly measured in lunar months or synodic months.
- The length of a year is defined in terms of a tropical year.
- The day is defined based on the Earth's rotation on its axis.
- The year is defined based on the Earth's orbit around the Sun.
- The longest time period is the year.
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