Question 1
- Name three features resulting from extrusive volcanic activity
- Distinguish between porous and pervious rocks.
Answer
-
- Composite volcanoes.
- Lava plateau.
- Caldera/crater.
- Volcanic plug. - - Porous are spongy-like rocks with air spaces/pores and have a low capacity to hold water while pervious are solid rocks which have cracks with a high rate of water passage
Question 2
- What is an isobar.
- State four characteristics of modified equatorial climate of the lake Victoria basin
Answer
- - It is an imaginary line connecting places with the same air pressure
-
- Rainfall throughout the year.
- Rainfall totals between 1600 and 2000mm.
- Rainfalls mainly in the afternoons
- Rainfall is accompanied by thunder/lightening
Question 3
- Give two features found in fluvial glacial regions
- State three negative effects of glacial depositional features
Answer
-
- Kames
- Eskers
- Boulders -
- May interfere with river courses / change direction of the river.
- Usually cover rich with agricultural lands
- May interfere with transport network
Question 4
-
Use the diagram below to answer the following questions
- Identify the drainage pattern shown above
- Name the features marked P, Q, R
Answer
- - Trellis drainage pattern
-
P – Secondary obsequent
Q – Subsequent
R – Secondary consequent
Question 5
Differentiate between emerged and submerged coasts.
Answer
- An emergent coast is a coastline whose part of the continental shelf has been exposed due to a relative fall in sea level while submerged coast is a coastline which has been drowned due to a relative rise in sea level