Question 1 Report
Using relevant sketches, distinguish between
(a) solstice and equinox
B. the earth's rotation and revolution
C. parallels of latitude and meridians of longitude
(a) Solstice and Equinox
| Solstice | Equinox |
|---|---|
| The day when the sun is overhead at a tropic (23.5°N on 21 June, 23.5°S on 22 December). | The day when the sun is overhead at the Equator (21 March and 23 September). |
| Day and night are unequal; one hemisphere has its longest day, the other its longest night. | Day and night are equal (12 hours each) all over the world. |
| Marks the beginning of summer/winter. | Marks the beginning of spring/autumn. |
(A sketch shows the sun's rays vertical over the Tropic of Cancer at the June solstice and over the Equator at the equinox.)
(b) Rotation and Revolution of the Earth
| Rotation | Revolution |
|---|---|
| Spinning of the earth on its own axis. | Movement of the earth in its orbit round the sun. |
| Completed in about 24 hours (one day). | Completed in about 365.25 days (one year). |
| Causes day and night and the apparent movement of the sun. | Causes the seasons and varying length of day and night. |
(A sketch shows the earth spinning about its tilted axis and, separately, circling the sun.)
(c) Parallels of latitude and Meridians of longitude
| Parallels of latitude | Meridians of longitude |
|---|---|
| Imaginary lines running east-west, parallel to the Equator. | Imaginary lines running north-south from Pole to Pole. |
| Measure distance north or south of the Equator (0° to 90°). | Measure distance east or west of the Greenwich meridian (0° to 180°). |
| Are of unequal length; longest at the Equator, shortest near the Poles. | Are all of equal length and all meet at the Poles. |
| Never meet. | Converge and meet at the two Poles. |
(A sketch of the globe shows horizontal parallels and vertical converging meridians.)
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