The International Date Line and time | Starter Quiz | Oak National Academy

(a)   is the line of longitude at 0 degrees, from which the other lines of longitude are measured east and west.

Answer explanation

Correct! The Prime Meridian is the line of longitude at 0 degrees, from which the other lines of longitude are measured east and west.

Webcams give geographers information about ...

• the weather.

• what people are doing.

• the line of latitude.

• what time of day it is.

Answer explanation

Correct! Webcam images can give us lots of information including if it is daylight, what the weather is like and sometimes what people are doing.

Earth is divided into {{ }} standard meridians, at intervals of 15˚.

• 12

• 24

• 36

Answer explanation

Correct! Earth is divided into 24 standard meridians, at intervals of 15˚.

Which of these statements are correct?

• time zones to the west of the Prime Meridian are minus UTC

• time zones to the east of the Prime Meridian are minus UTC

• time zones to the west of the Prime Meridian are UTC plus

• time zones to the east of the Prime Meridian are UTC plus

Answer explanation

Correct! Time zones to the east of the Prime Meridian are ‘UTC (or GMT) plus’; time zones to the west are ‘minus UTC (or GMT)’.

Order the time zones based on their distance from the Prime Meridian (UTC) starting with the closest.

• -4

• +1

• -12

• +8

• +7

Answer explanation

Correct! In order of distance from the Prime Meridian (starting with the closest) the time zones are ordered: +1, -4, +7, +8 and finally -12.

Why are there 24 time zones?

• Earth takes 24 hours to rotate 15°.

• Earth takes one hour to rotate 15°.

• Earth takes one hour to rotate 360°.

Answer explanation

Correct! There are 24 time zones because Earth takes one hour to rotate 15°.