Explanation

• The study of ancient societies through remains and artifacts is called archaeology.
• It focuses on ruins, tools, coins, and old structures.
• It helps us understand past human civilizations.

Last verified on 02-05-2026

Explanation

• The term Geography was first used by the Greek scholar Eratosthenes.
• He lived in the 3rd century BC (around 276–194 BC).
• He is also known as the “Father of Geography”.
• He calculated the circumference of the Earth with remarkable accuracy.
• His work laid the foundation of modern geographical studies.

Last verified on 02-05-2026

Explanation

• Meteorology is the scientific study of the atmosphere, especially weather and climate.
• It involves forecasting and understanding atmospheric phenomena.
• Meteorology is a branch of the atmospheric sciences.
• Metrology is the scientific study of measurement.

Last verified on 03-04-2026

Explanation

• Ecology is the study of relationships between living organisms and their environment.
• It includes interactions among plants, animals, and surroundings.
• The term was introduced by Ernst Haeckel in 1866.
• It helps in understanding ecosystems and environmental balance.

Last verified on 25-04-2026

Explanation

• The world’s fastest bird is the Peregrine Falcon (Falco peregrinus)
• Reach speed of over 300 km/h (186 mph) during a hunting dive (called a stoop).

Additional information:

Fastest Running Bird: Ostrich (up to 43 mph). 

Last updated by NA on 25-April-2026

Explanation

• Washing soda is also known as sodium carbonate (Na2CO3).
• It is used to remove permanent hardness of water.
• Permanent hardness is caused by the presence of magnesium and calcium sulfates or chlorides in water, which cannot be removed by boiling.
• Washing soda helps to precipitate these minerals, making the water softer.

Last verified on 23-04-2026

Explanation

• Spider legs = 8 total
• Arrangement = 4 pairs
• Insects (like ants, bees) have only 3 pairs (6 legs)

 Last updated NA 12-04-2026

Explanation

• A simple microscope is used to magnify small objects.
• It works by bending light to produce a larger image.
• Only a converging lens can produce a magnified virtual image.
• A convex lens has this property.
• Therefore, simple microscopes use a convex lens.

Last verified on 12-04-2026

Explanation

• Seismology is the study of earthquakes and seismic waves that move through and around the Earth.
• A seismologist is a scientist who studies earthquakes and seismic waves.

Last verified on 03-04-2026

Explanation

• Oncology is a branch of medicine that deals with the study, treatment, diagnosis, and prevention of cancer.
• A medical professional who practices oncology is an oncologist.
• The name's etymological origin is the Greek word ὄγκος, meaning "tumor", "volume" or "mass".

Last verified on 03-04-2026