The earth and the solar system — KCSE Geography

KCSE Geography · 47 practice questions · 4 syllabus objectives

22 easy18 medium7 hard

What You'll Learn

Key learning outcomes for this topic, aligned to the KNEC KCSE syllabus.

Describe the structure of the earth (crust, mantle, outer core, inner core) and state the characteristics of each layer

State the movements of the earth (rotation and revolution) and explain the effects of each movement

Describe the members of the solar system and explain the relative positions of the planets

The earth and the solar system

Sample Questions

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1
easySHORT ANSWER4 marks

Explain how the shape and movements of the earth cause day and night and the different seasons.

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Part (a) — 4 marks
Earth is a sphere: only half faces the sun at any time, causing day (facing) and night (away) (1 mk)
Rotation on axis in 24 hours: creates the daily cycle of day and night (1 mk)
Axial tilt of 23.5°: as earth revolves, one hemisphere is tilted toward sun (summer) and the other away (winter) (1 mk)
Revolution around sun in 365¼ days: this annual orbit combined with tilt creates seasons (1 mk)
2
easySHORT ANSWER2 marks

State two ways in which the Sun affects life on Earth. (2 marks)

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Part (a) — 2 marks
Provides energy for photosynthesis in plants (1 mk)
Influences weather and climate patterns (1 mk)
3
easySHORT ANSWER3 marks

State three reasons why the Earth is referred to as the 'Blue Planet'. (3 marks)

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Part (a) — 3 marks
About 71% of the Earth’s surface is covered by water (1 mk)
Oceans reflect blue light giving the planet its colour (1 mk)
Presence of large water bodies such as oceans and lakes (1 mk)
4

State two characteristics of the Moon. (2 marks)

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