World Geography MCQs

221. The main properties of cosmic ray particles are

A. its electric charge
B. its rest mass
C. its energy
D. All of these are its properties
✅ The correct answer is option D.
There are 2 types, primary and secondary. Primary is radiation and secondary is particles like protons,etc. The properties are that they usually have really high energies and some can be more energetic than what is produced in the LHC. These rays are usually emanated from supernovae and the sun nearby.

227. The subatomic particles arriving from outer space having high energy are called

A. protons
B. electrons
C. cosmic rays
D. None of the above
✅ The correct answer is option C.
The subatomic particles arriving from outer space having high energy are called cosmic rays. High-energy particles arriving from outer space are mainly (89%) protons – nuclei of hydrogen, the lightest and most common element in the universe – but they also include nuclei of helium (10%) and heavier nuclei (1%), all the way up to uranium.

228. The planets that are called superior planets are

A. Mercury, Venus, Earth, Mars and Jupiter
B. Jupiter, Saturn, Uranus, Neptune and Pluto
C. Mercury, Pluto, Venus, Neptune and Earth
D. Earth, Uranus, Mars, Saturn and Jupiter
✅ The correct answer is option B.
The planets that are called superior planets are Jupiter, Saturn, Uranus, Neptune and Pluto.

229. The process that creates the deep oceanic trenches is called

A. plate tectonics
B. sea floor spreading
C. continental drift
D. isostasy
✅ The correct answer is option A.
Trenches are formed by subduction, a geophysical process in which two or more of Earth’s tectonic plates converge and the older, denser plate is pushed beneath the lighter plate and deep into the mantle, causing the seafloor and outermost crust (the lithosphere) to bend and form a steep, V-shaped depression.

230. The study of soils is called

A. geomorphology
B. pedology
C. hydrology
D. biogeography
✅ The correct answer is option B.
Pedology (from Greek: pedon, “soil”; and logos, “study”) is the study of soils in their natural environment. It is one of two main branches of soil science, the other being edaphology.
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