Explanation

• Battery is a device that converts chemical energy into electrical energy.
• Batteries work by using a galvanic cell.
• It is an electrochemical device made up of two electrodes and an electrolyte solution.

Last verified on 16-03-2026

Explanation

• The instrument used to measure temperature is called a thermometer.
• A thermometer shows how hot or cold an object or place is.

Additional information:

• Barometer measures air pressure.
• Hygrometer measures humidity (moisture in air).

Last verified on 16-06-2026

Explanation

• The poles experience six months of the day and six months of the night.
• This is since earth is tilted on its axis.
• Also, due to this, each pole is tilted towards and away from the sun for about six months.
• When the North Pole is tilted towards the sun, it has continuous daylight.

Last updated 08 Nov 2026 by NA

Explanation

• Cartography is the science and art of creating maps to represent geographical areas.
• It includes designing, drawing, and interpreting maps for navigation and study.

Last updated 06 Nov 2026 by NA

Explanation

• Thymine is a pyrimidine nitrogenous base found in DNA.
• But normally absent in RNA, where uracil takes its place.
• The two pyrimidine bases in RNA are uracil (U) and cytosine (C).
• Adenine (A) and guanine (G) are purine bases found in both DNA and RNA.
• DNA contains A, T, G, C.
• RNA contains A, U, G, C.

Last verified on 25-10-2026