10 questions. Try each one, then open the answer to check yourself and read the explanation.
A simple of measure of the number of dependents that each 100 people in the productive years must support is
Answer: B (dependency ratio)
The dependency ratio compares the young and old dependants with every 100 people of working age.
Africa is bounded in the North by
Answer: A (Mediterranean sea)
The Mediterranean Sea lies along Africa's northern coast; the Atlantic is to the west and the Red Sea and Indian Ocean to the east.
An eclipse of the moon occurs when the
Answer: B (earth casts its shadow on the moon)
When the earth lies between the sun and the moon, its shadow falls on the moon and blocks the sunlight: a lunar eclipse.
Conakry is the capital of
Answer: B (Guinea)
Conakry is the capital of Guinea.
Which of the following countries is a member state of ECOWAS ?
Answer: A (Guinea)
Guinea is in West Africa and belongs to ECOWAS; the others are in East, southern and North Africa.
One of the following properties of soil can be easily observed in the field
Answer: B (texture)
Texture (how coarse or fine the soil is) can be felt by hand on the spot; the others need tests.
One of the following instruments measures the direction of wind
Answer: C (wind vane)
A wind vane shows wind direction; an anemometer measures wind speed and a barometer air pressure.
A line on a map or chat connecting area of equal rainfall is called
Answer: B (isohyet)
An isohyet joins places with equal rainfall; isobars join equal pressure and isotherms equal temperature.
A woman living on longitude 30°E is calling her friend at 1am .if the friend lives on longitude 30°W , what will the time be from her end?
Answer: C (9 pm the previous day)
The difference is 60° of longitude; at 15° per hour that is 4 hours. West is behind, so 1 a.m. − 4 hours = 9 p.m. the previous day.
A map with a scale of 1: 40,000 is reduced to one quarter of its size, what is the new scale?
Answer: C (1: 160,000)
Making the map a quarter as long multiplies the scale denominator by 4: 40,000 × 4 = 160,000, so 1:160,000.