geomorphology & earth landforms section 5 Practice Questions Answers Test with Solutions & More Shortcuts

Answer: (c)

• The Pliocene Epoch is the epoch in the geologic timescale that extends from 5.333 million to 2.58 million years BP. It is the second and youngest epoch of the Neogene Period in the Cenozoic Era.
• The Miocene is the first geological epoch of the Neogene Period and extends from about 23.03 to 5.333 million years ago (Ma). The Miocene was named by Sir Charles Lyell.
• The Oligocene is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years.

Answer: (d)

Earthquake is a sudden and violent movement, or fracture, within the earth followed by the series of shocks resulting from this fracture. Earthquake is more likely to be of Tectonic origin and probably because of existence of a Fault.

Answer: (a)

Volcanic activity occurs at two types of plate boundaries: mid-ocean ridges and subduction zones.

At mid-ocean ridges, basaltic eruptions produce new sea-floor crust. These underwater eruptions don’t produce big mountainous volcanoes, which is why they are often overlooked as the most volcanically active features on Earth.

Answer: (a)

Magnetic declination is the angle between compass north (the direction the north end of a compass needle points) and true north (the direction along the earth’s surface towards the geographic North Pole.

Answer: (b)