Two points on a map are 4 km apart horizontally and differ in height by 400 m. Calculate the average gradient between them.
Answer: D. Gradient = vertical interval ÷ horizontal equivalent = 400 m ÷ 4,000 m = 1 in 10.
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Two points on a map are 4 km apart horizontally and differ in height by 400 m. Calculate the average gradient between them.
Answer: D. Gradient = vertical interval ÷ horizontal equivalent = 400 m ÷ 4,000 m = 1 in 10.
When it is 10:00 a.m. at a place on longitude 60° E, what is the local time at a place on longitude 175° E?
Answer: C. The difference in longitude is 115°, and each degree is 4 minutes, so the time difference is 460 minutes. The second place is east, so its time is ahead: 5:40 p.m.
Which of these describes the Sahara?
Answer: A. The Sahara is the largest hot desert in the world.
Where in Nigeria is crude oil mainly found?
Answer: B. Crude oil is associated with the Niger Delta.
The line of longitude 0° is called the
Answer: A. The prime meridian passes through Greenwich, London.
Relative humidity is measured with a
Answer: C. A hygrometer (wet and dry bulb) measures humidity.
The breakdown of rocks in their original position is called
Answer: B. Weathering happens in place; erosion moves the material.
The ozone layer is found in the
Answer: C. Ozone in the stratosphere absorbs ultraviolet rays.
The vegetation belt closest to the Sahara in northern Nigeria is the
Answer: D. Sahel savanna has short grasses and few trees.
The dry, dusty wind that blows into Nigeria from the Sahara between November and February is the
Answer: C. The north-east trade wind brings the harmattan.
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| Topic | Questions |
|---|---|
| Map reading | 159 |
| Climate | 121 |
| Nigeria | 83 |
| Africa | 75 |
| The earth | 62 |
| Population | 60 |
| World geography | 22 |