Explanation:

The visible colors from shortest to longest wavelength are: violet, blue, green, yellow, orange, and red.

Explanation:

A generator converts mechanical energy into electrical energy, while a motor does the opposite – it converts electrical energy into mechanical energy. Both devices work because of electromagnetic induction, which is when a voltage is induced by a changing magnetic field

Explanation:

Gunpowder consists of a mixture of sulfur, charcoal, and potassium nitrate (saltpeter).

Explanation:

Fructose, or fruit sugar, is a simple ketonic monosaccharide found in many plants, where it is often bonded to glucose to form the disaccharide, sucrose.

Explanation:

Nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller parts

Smallpox vaccine, the first successful vaccine to be developed, was introduced by Edward Jenner in 1796.

Explanation:

The visible colors from shortest to longest wavelength are: violet, blue, green, yellow, orange, and red.

Explanation:

Hydrometer is an instrument for measuring the density of liquids

Explanation:

Ophthalmology is the branch of medicine that deals with the anatomy, physiology and diseases of the eyeball and orbit.

Explanation:

Urea, also known as carbamide, is an organic compound with chemical formula C O(N H₂)₂. This amide has two –NH₂ groups joined by a carbonyl functional group

Explanation:

Condensation is the change of the physical state of matter from gas phase into liquid phase, and is the reverse of vapourisation.

Explanation:

Vint Cerf. Widely known as a “Father of the Internet,” Cerf is the co-designer of the TCP/IP protocols and the architecture of the Internet.