Question 1
- Give three heavenly bodies.
- Distinguish between equinox and solstice
Answer
-
- Sun
- Moon
- Stars. - Equinox refers to the time of the year when we have equal length of day and night and the sun is overhead at the Equator while solstice is the time of the year when the day are longer than nights or nights are longer than days and the sun is overhead at either tropic of Cancer or Tropic of Capricorn.
Question 2
- What are harmattan winds
-
The diagram below shows a type of wind
(i) Identify the type of wind marked W.
(ii) List two characteristics of the type of the wind marked W
Answer
- - These are North East winds blowing from Sahara across West Africa between November and March.
-
(i)
W - Katabatic wind / mountain breeze.
(ii) - Cold air
- Dense air.
Question 3
- What is a mineral?
- Name two metallic minerals?
Answer
- A mineral is an inorganic substance with a definite chemical composition at / beneath the surface of the earth /a mineral is a solid inorganic substance occurring naturally.
-
- Sulphur
- Potash
Question 4
- What is climate?
- Explain two effects of climate change on the physical environment
Answer
- Average weather conditions of a place which have been observe and recorded over along period of time
-
- Global warming / increased temperature may led to increase evaporation of ocean water
which may cause heavy rainfall in some areas.
- Increased temperature may lead to the melting of ice caps / ice sheets and glaciers leading to rising sea level.
Question 5
- What is a karst scenery
- Give three factors that influence the development of karst scenery.
Answer
- A karst scenery refers to an area covered by limestone rocks.
-
- The surface rock and the rock beneath should be thick limestone, dolomite or chalk.
- The rock should be hard and well jointed.
- The climate should be hot and humid.