Starter quiz
- A ______ is a map of Earth on a sphere.
- atlas
- axis
- globe ✓
-
- Lines of longitude are imaginary lines on Earth showing position east or west of the ______, measured in degrees.
- Prime Meridian ✓
- Equator
- Tropic of Cancer
-
- At any moment, half of Earth faces the sun and experiences the light and heat from the sun’s rays while the other half is in ...
- 'darkness' ✓
- Which statements about lines of longitude are true?
- They are equal in length. ✓
- They run from the North to South Pole. ✓
- They are parallel.
-
What is the name given to the red line of longitude shown on this globe?- Equator
- Prime Meridian ✓
- Antimeridian
-
- The Antimeridian is located at ______ longitude and runs through the Pacific Ocean.
- 0˚
- 90˚
- 180˚ ✓
- 360˚
-
Exit quiz
- Daylight happens when places face towards the ...
- 'sun' ✓
- Greenwich Mean Time (GMT) is the average time when the sun crosses the ______ at Greenwich in London.
- Equator
- Antimeridian
- Prime Meridian ✓
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- Which of these is a standard system that is used to set all of the world’s time zones?
- GMT
- UTC ✓
- AM
-
- Time in countries to the east of the Prime Meridian is always ______ that in the UK.
- behind
- the same as
- ahead of ✓
-
- Time in countries to the west of the Prime Meridian is always ...
- behind the UK. ✓
- the same as the UK.
- in front of the UK.
-
If the UTC was 12:00 noon, which time zone do you think this webcam could be from?- +1
- +3
- +8 ✓
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Worksheet
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Presentation
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Video
Lesson Details
Key learning points
- Time zones to the east of the Prime Meridian are ‘UTC (or GMT) plus’; time zones to the west are ‘minus UTC (or GMT)'.
- Webcams are a useful source of information about what is happening in places which are in different time zones.
- Earth is divided into 24 standard meridians, at intervals of 15˚, which are the basis for delineating 24 time zones.
- Time zones are measured from the Prime Meridian at 0˚ longitude, where the time is Universal Co-ordinated Time (UTC).
Common misconception
UTC and GMT are the same.
UTC is a time standard - an agreement to synchronise the worlds timings centres to this standard time. GMT is a time zone.
Keywords
Co-ordinated universal time - Co-ordinated Universal Time (UTC) is a standard system that is used to set all the world’s time zones.
Greenwich mean time - Greenwich Mean Time (GMT) is the time at the zero degree line of longitude, also known as the Prime Meridian.
Prime meridian - The Prime Meridian is the line of longitude at 0 degrees, from which the other lines of longitude are measured east and west.
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