Question 1
- Explain the relationship between geography and mathematics
- When the local time is 2:00 p.m. at longitude 45°E , what is the longitude of a place whose local time is 8:00 P.M?
Answer
-
- Geography uses mathematical formulae to calculate distances, areas, and population densities .it relies on mathematics for statistical analysis
- Mathematics relies on geography in giving directions and calculating bearing -
Time at longitude X is 8:00 p.m.
I.e. 6 hours ahead of that at 45°E
From 2 pm to 8 p.m = 6 hours
This is 6 hours ahead of that at 45°E
6 hours X 60 minutes
360 minutes = 90
4 minutes
X is 90° East of longitude 45°E
= 90° + 45° = 135°
Longitude X is 135°
Question 2
- Give three examples of chemically formed sedimentary rocks
- Describe how coral rocks are formed
Answer
-
- Limonite
- Travertine/tufa
- Dolomite -
- Tiny marine organism called coral polyps live in colonies in the sea
- Polyps extracts calcium from sea water
- The polys die and their hard skeletons of calcium carbonate accumulate into a solid mass
Question 3
- List three external land forming processes which leads to formation of Lakes
- State two ways in which lakes influence natural environment
Answer
-
- Weathering /by solution in limestone areas
- Deposition by water/ice
- Materite falling -
- Lakes are reservoirs in the water cycle
- Support bio-diversity/flora and fauna
Question 4
-
The diagram below shows some of the surface features in a Karst scenery .Use it to answer questions (i) below
(i) Name the features marked X, Y and Z
(ii) Name two other features, which form on the surface of a karst scenery
Answer
-
(i) X - a clint
Y - a joint
Z - a grike
(ii) - Swallow holes
- Dolines
Question 5
-
Study the diagram below showing a soil profile. Use it to answer the questions that Follow
(i) Name the soil layers marked 1, 2, 3 and 4
(ii) Give two factors that influence soil leaching
Answer
(i) 1 - Humus layer
2 - Top soil
3 - Sub soil
4 - Weathered parent material
(ii) - Nature of soil/solubility of minerals
- Amount of rainfall
2 - Top soil
3 - Sub soil
4 - Weathered parent material
(ii) - Nature of soil/solubility of minerals
- Amount of rainfall