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a) The earth has three layers.The crust,the core and the mantle.the crust is about 74-75 km deep and it consist of oxygen,silicon,aluminium,iron,calcium, magnesium,potassium and sodium.the second layer is the core which is the central part has two part,inner core-this is about 1220 km and the outer core which is about 2180 km thick and its made of nickel-iron alloy.the third layer is the mantle which is composed of silicate rocks rich in magnesium and iron.it is about 2890-2900 km deep.
b)-Earth is a planet while sun is a star
- Earth is a solid piece of rock while the sun consist of gases
- Earth is habitable (life is supported on earth) while sun is not habitable
32906521 answered the question on September 19, 2017 at 09:34
- a)Explain why the Government of Kenya encourages the setting up of industries in rural areas (b)Explain four factors that have contributed to the development of electronics industry in...(Solved)
a)Explain why the Government of Kenya encourages the setting up of industries
in rural areas
b)Explain four factors that have contributed to the development of electronics
industry in Japan.
Date posted: September 16, 2017. Answers (1)
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households around their school.
i)Identify two sampling techniques the students may have used...(Solved)
Some students carried out a field study on sources of energy by sampling the
households around their school.
i)Identify two sampling techniques the students may have used during
the study.
ii)Give three advantages of sampling the households for the study.
Date posted: September 16, 2017. Answers (1)
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ii)Apart from providing electric power, state four other benefits of the
dams along the river Tana.
iii)Identify two...(Solved)
a)i.Name three main hydroelectric power stations along the river Tana
ii)Apart from providing electric power, state four other benefits of the
dams along the river Tana.
iii)Identify two problems that affect the production of power along river
Tana.
Date posted: September 16, 2017. Answers (1)
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i)Give four reasons why you need a route map for the study.
ii)What information are...(Solved)
a)You plan to carry out a field study in a tea farm.
i)Give four reasons why you need a route map for the study.
ii)What information are you likely to gather about marketing of processed tea
during the study? Tea is marketed
Date posted: September 16, 2017. Answers (1)
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a)What is agriculture?
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c)Give four physical factors that influence the growing of tea in Kenya
d)Explain four problems facing small scale tea farming in Kenya
Date posted: September 16, 2017. Answers (1)
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a)Describe opencast method of mining
b)Explain three benefits of petroleum mining to the economies of Middle East
countries
Date posted: September 16, 2017. Answers (1)
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Explain how the following factors influence the exploitation of minerals
(a) Mode of occurrence of minerals
(b) Transport
(c) Level of technology
Date posted: September 16, 2017. Answers (1)
- a)Apart from pie-chart, name two other statistical methods that can be
used to represent the data
b)Explain four positive effects of low population growth in a country
(Solved)
a)Apart from pie-chart, name two other statistical methods that can be
used to represent the data
b)Explain four positive effects of low population growth in a country
Date posted: September 15, 2017. Answers (1)
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Identify five measures used to control floods in Kenya
Date posted: September 15, 2017. Answers (1)
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b)Identify two differences in the functions of Nairobi and New York(Solved)
a)State two factors that led to the development of nucleated settlement patterns.
b)Identify two differences in the functions of Nairobi and New York
Date posted: September 15, 2017. Answers (1)
- a)Name two countries to which Kenya exports petroleum products
b)State four factors that influence external trade in Kenya(Solved)
a)Name two countries to which Kenya exports petroleum products
b)State four factors that influence external trade in Kenya
Date posted: September 15, 2017. Answers (1)
- a)Name the method of irrigation used in Perkerra irrigation scheme
b)State three factors that influenced the location of the Perkerra irrigation scheme(Solved)
a)Name the method of irrigation used in Perkerra irrigation scheme
b)State three factors that influenced the location of the Perkerra irrigation scheme
Date posted: September 15, 2017. Answers (1)
- a)Name two major deserts found in Africa.
b)Describe the three processes through which wind transports its load.
c)Describe the formation of a barchan.
d)Explain four ways in which...(Solved)
a)Name two major deserts found in Africa.
b)Describe the three processes through which wind transports its load.
c)Describe the formation of a barchan.
d)Explain four ways in which desert features are of significance to human activities.
Date posted: September 15, 2017. Answers (1)
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i)Give four reasons why it is important to seek permission from the school
administration
ii)List three...(Solved)
You are planning to carry out a field study in a forest
i)Give four reasons why it is important to seek permission from the school
administration
ii)List three sources of information you are likely to use before the actual field
study
iii)Identify four challenges you are likely to encounter during the field study
Date posted: September 15, 2017. Answers (1)
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What is vegetation?
Date posted: September 15, 2017. Answers (1)
- a)What is volcanicity?
b)i.Apart from a sill, name three other intrusive volcanic features.
Describe how the following features are formed
-a sill
-hot springs
-A caldera.
c)Explain four negative effects of...(Solved)
a)What is volcanicity?
b)i.Apart from a sill, name three other intrusive volcanic features.
ii)Describe how the following features are formed
-a sill
-hot springs
-A caldera.
c)Explain four negative effects of earthquakes.
Date posted: September 15, 2017. Answers (1)
- a)Name the first two planets of the solar system. (b)Explain the origin of the earth according to the Nebula Cloud Theory. (c)Give two reasons why the earth...(Solved)
a)Name the first two planets of the solar system.
b)Explain the origin of the earth according to the Nebula Cloud Theory.
c)Give two reasons why the earth has a spherical shape
d)State four effects of the rotation of the earth on its axis.
e)Describe the structure of the earth's crust
Date posted: September 15, 2017. Answers (1)
- a)Identify any two social functions of a town
b)State three factors that favor trading in towns
(Solved)
a)Identify any two social functions of a town
b)State three factors that favor trading in towns
Date posted: September 15, 2017. Answers (1)
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a)Give two types of soil degeneration
b)State three economic benefits of soils
Date posted: September 15, 2017. Answers (1)
- a)What is the difference between an ice sheets and an iceberg? (b)Name three types of glacial moraines(Solved)
a)What is the difference between an ice sheets and an iceberg?
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Date posted: September 15, 2017. Answers (1)