Explanation

A refrigerator transfers heat from inside to outside using thermodynamic cycles.

It relies on principles like heat absorption, compression, and expansion of refrigerants.

Explanation

Caves are mainly formed when water erodes soluble rocks like limestone over long periods.

This process is called chemical weathering.

It is leads to underground hollow spaces.

Explanation

Explanation

Tectonic plate movements create pressure and cracks in the Earth's crust.

This allows magma to rise and cause volcanic eruptions.

Explanation

The Earth moves around its axis once in 24 hours — this is called rotation.

While its motion around the Sun once in approximately 365 days is called a revolution.

(Note: You mentioned "356 days" — this appears to be a typo. The correct value is approximately 365.25 days.)

Explanation

Scientific socialism is strongly associated with Karl Marx.

He, along with Friedrich Engels, developed this theory in the mid-1800s

Analyzing societal structures through a historical, economic, and scientific lens, particularly focusing on class conflict.

Explanation

A systematic error occurs due to flaws in the measuring instrument or method, causing consistent deviation.

It can be corrected by calibration or proper maintenance of equipment.

Explanation

Troposphere is the lowest layer of the atmosphere where all weather phenomena occur and where we live.

Exosphere is the outermost layer, gradually merging into space, containing very thin air and satellites.

Explanation

Explanation

Definition of Equator:

The equator is an imaginary 0° latitude line, encircling Earth’s midpoint.

It divides the planet into the Northern and Southern Hemispheres.