Question 1
- Name two causes of earth movement
- State three evidence that confirm the continental drift theory.
Answer
-
- Magma movement
- Isostatic adjustment -
- Sea floor spreading
- Geological similarities
- Palaeoclimatic evidence
Question 2
- Name two factors that influence wind erosion in arid areas.
- Students of Wajir Secondary School carried out a field study on wind erosion near their school. Name any three features they identified.
Answer
-
- Nature of the load
- Vegetation cover -
- Mushroom blocks
- Zeugens
- Yardangs
Question 3
-
Use the table below for Town X to answer the questions that follow
-
(i) Calculate the mean annual temperature for town X
(ii) What if the annual temperature range for town X -
(i) Name a town in Africa where the figures in the above table may have been taken.
(ii) Give one reason for your answer in (b) (i) above
Answer
-
(i) 16.70C
(ii) 90C -
(i) Cape Town or Port Elizabeth in S.Africa
(ii) Dry summers and wet winters
Question 4
- Name three factors that influence glacial erosion.
- State two ways in which glacier erodes
Answer
-
- Size of the glacier
- Slope / gradient
- Speed of the glacier - - Abrasion
Question 5
- Differentiate between an ocean from a sea.
- Name any three types of ocean tides
Answer
- An ocean is a vast body of salty water on the earth’s surface that surrounds the land or continent.A sea is a large salty water body surrounded by land
-
- Perigean tides
- Neap tides
- Spring tides