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.

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.

The phenomenon of an opening occurring in the earth’s surface through which a jet of hot water and steam is forces out at irregular intervals is called

A. crater
B. geyser
C. hot spring
D. volcano
✅ The correct answer is option B.
The phenomenon of an opening occurring in the earth’s surface through which a jet of hot water and steam is forces out at irregular intervals is called geyser.