The Earth's equatorial region bulges outward, but the Earth flattens slightly towards the polar regions due to the:
Earth's rotational force
The Earth's equatorial bulge and polar flattening result from its rotation: the centrifugal effect of the daily spin about its own axis is strongest at the equator, where the tangential rotational speed is greatest, pushing mass outward there, while it has no effect at the poles, which lie on the axis itself and therefore flatten slightly. This is why the Earth is an oblate spheroid rather than a perfect sphere. Hence, the cause is the Earth's rotational force.
The process of Podsolization is predominantly found in:
Which one of the following is not an igneous red rock?
While travelling to a hilly region, you notice a massive boulder, which was loosened by heavy rains and moved downhill. This has resulted due to which of the following processes?
1. Mass wasting
2. Erosion
3. Weathering
Which of the following statements regarding Barchan is/are correct?
1. It is a crescent shaped mound of sand, which is deposited by the wind blowing constantly from one direction in a desert.
2. The windward side has a convex steep slope with maximum height at the centre.
3. Two ends of Barchan are called horns and point opposite to the direction the wind blows.
Select the answer using the code given below:
Which one of the following factors does not affect the distribution of groundwater ?
Which of the following statements is/are correct?
1. The Earth’s crust is brittle in nature.
2. The mean thickness of the oceanic crust is 15 km, whereas that of the continental crust is around 30 km.
Select the correct answer using the code given below.
Which of the following statements in respect of landslides are correct?
1. These occur only on gentle slopes during rain.
2. They generally occur in clay-rich soil.
3. Earthquakes trigger landslides.
Consider the following statements :
1. Rocks do not remain in their original form for long and undergo transformation.
2. Transformation of rocks is caused by weathering, erosion and metamorphic action.
Marble is the metamorphosed form of?
Asthenosphere is:
The discontinuity present in earth's interior between lower mantle and outer core is called _________.
Which of the following igneous rocks contain silica in excess of 65%?
Which type of rocks are found in Lafagarh and Podi Uprora ?