geomorphology & earth landforms section 1 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 1

Consider the following statements regarding artesian aquifer :

  1. It is a confined aquifer containing groundwater under negative pressure.
  2. It is a geologic layer of porous, but impermeable material such as sand and gravel, limestone or sandstone.
  3. The Great Artesian basin is the largest and deepest artesian basin in the world.
Which of the statements given above is/are correct?

a) 3 only

b) 1 only

c) 1, 2 and 3

d) 2 only

Answer: (c)

An Artesian aquifer is a confined aquifer containing groundwater under positive pressure. This causes the water level in a well to rise to a point, where hydro-static equilibrium has been reached. This type of well is called an Artesian well.

Water may even reach the ground surface if the natural pressure is high enough, in which case the well is called a flowing Artesian well.

Question : 2 [SSC CGL (CBE) 2016]

Magnetic Meridian is a

a) Line joining the geographic north and geographic south of Earth

b) Line parallel to the equator of the Earth

c) Plane passing through the magnetic north and magnetic south of Earth

d) Latitude

Answer: (c)

A magnetic Meridian is a line on the earth’s surface approximating a great circle passing through the north and south magnetic poles.

It can be taken as the horizontal component of magnetic force lines along the surface of the earth. A compass needle is parallel to the magnetic meridian.

Question : 3 [UPPCS (Mains) 2011]

The Savannas are most widespread in

a) North America

b) Africa

c) South America

d) Asia

Answer: (b)

Question : 4 [SSC CGL 2015]

Earthquakes are caused by

a) Earth revolution

b) Denudation

c) Earth rotation

d) Tectonism

Answer: (d)

Earthquakes result from the sudden release of energy in the Earth’s crust that creates seismic waves. Most occur along plate boundaries.

Tectonic earthquakes occur anywhere in the earth where there is sufficient stored elastic strain energy to drive fracture propagation along a fault plane.

Question : 5 [SSC Stenographer 2011]

Which one of the following is an unpredictable natural disaster?

a) Tornado

b) Earthquake

c) Hurricane

d) Cyclone

Answer: (b)

Despite rapid advances in earth sciences and technology, it is hard to predict the exact timing of an earthquake. The suddenness associated with earthquakes is the main reason behind severe damage to life and property.

Due to the general unpredictability of earthquakes, it is best to stress the importance of planning ahead.

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