10km, 40km
5km, 20km
2.5km, 10km
20km, 80km
Correct answer is A
map distance = 10cm, ground distance = ?
Map scale for (a) 1:100,000
Ground distance = 10 x 100,000/100,000 =10km
Map scale for (b) 1:400,000
Ground distance = 10 x 400,000/100,000 =40km
5km
2.5km
10km
20km
Correct answer is C
map distance = 20cm, ground distance = Y
map scale = 2cm to 1km
since 2cm ≡ 1km
20cm ≡ Y
2Y = 20km
Y = 20km/2=10km
The ground distance between the two towns is 10km
The correct arrangement of the layers of the earth crust from the surface to the interior is
sial, mantle, sima, core
sima, sial, core, mantle
core, mantle, sima and sial
sial, sima, mantle and core
Correct answer is D
The crust is subdivided into the upper part, containing minerals like silica, iron and magnesium(sima). The mantle is found beneath the crust and the core is surrounded by the mantle. Hence, the correct arrangement of the layers of the earth crust "sial, sima, mantle and core" from the surface to the interior.
Which of the following is an importance of the atmosphere to living organisms?
It provides water for industrial uses
It provides oxygen for animals and plants for respiration
It provides shelter in form of timber for man
It aids transportation through construction of roads and railways
Correct answer is B
option A is an importance of the Hydrosphere
option C is an importance of the Biosphere
option D is an importance of the Lithosphere
The Atmosphere is the gaseous portion of the earth. It is associated with the provision of gases required by living things e.g oxygen for combustion and respiration, nitrogen for protein synthesis by plants etc.
The outer structure of the earth is made up of the following except?
Mesosphere
Atmosphere
Biosphere
Hydrosphere
Correct answer is A
The atmosphere, biosphere and hydrosphere are all outer structure of the earth. The Mesosphere also known as the mantle is an internal structure of the earth which is found beneath the crust and surrounds the core(Barysphere)