On a map of scale 1:50 000 with contour interval at 20 meters, two places are 4cm apart and one lies five contour intervals higher than the other. The Gradient along a straight line between the two places is approximately?
A. 1 : 2
B. 1 : 20
C. 1 : 200
D. 1 : 2000
The map of a farm on scale 1 : 50 000 measures 10.2cm by 12.6cm. The actual area of the farm to the nearest km2 is?
A radio message sent from Lagos at 2.pm was received at another location at 7.a.m the same day. What is the approximate longitudinal position of the location?
Latitudes 66 1/2° North and South of the Equator are important because they?
A. are called the Arctic and Antarctic circles respectively
B. indicate the angle of inclination of the axis of the earth's rotation
C. mark the limits of the polar areas which experience periods of continuous night and daylight
D. mark the equatorward limits of the occurance of precipitation in the form of snow
Entrenched meanders, unpaired alluvial terraces and Knickpoints are features associated with?
A. rejuvenated river valleys
B. emergent coastkands
C. rivers in arid zones
D. the middle stage of the cycle erosion
A coastline of drowned river valleys is called a?
A. fiord coastline
B. neutral coastline
C. raised coastline
D. ria coastline
When subjected to sufficient stress, rocks break and sometimes move along the plane of fracture and are displaced. This process is known as?
Salinity in Black Sea is generally lower than the average for the oceans on the same latitudes because?
A. there is higher evaporation of the sea water
B. precipitation is exceptionally high
C. large rivers empty into the sea
D. the sea water does not mix freely
Which of the following factors explains the temperature difference between Dakar and Ouaga-dougou?
B. Distance from the sea
D. Vegetation cover
In which of the following types of climate are cyclones most prevalent?