I Know This Answer Trivia Quiz

Answer: Evaporation, condensation and precipitation (rainfall)

The rain cycle starts with evaporation of water from water bodies; it is followed by ascent of the warm air, leading to cooling and condensation of the water vapour. Finally, when the water molecules become large in size, they fall down as rainfall. And the cycle goes on and on.

Answer: Photosynthetic rock

Igneous rocks are produced when magma/lava cools inside/outside earth surface. Sedimentary rocks form when particles of rock, gravel, sand and silt are deposited in one place, and they are cemented by pressure or cementing materials like lime. Metamorphic rocks are formed when sedimentary or igneous rocks are altered due to tremendous heat or pressure.

Answer: Cerebrum, cerebellum and medulla oblangata

The cerebrum, cerebellum and medulla oblangata (also known as the brain stem) makes up the brain. The medulla helps in reflex actions, like helping us to breathe when we are asleep. The skull is the bony covering for our brain. Maxilla and mandible are two bones which makes up our upper and lower jaw, respectively.

Answer: Seismograph/Seismometer

A seismograph or seismometer helps us to measure the intensity of an earthquake. It is expressed in the Richter Scale, with a range from zero to nine. A barometer helps us in measuring air pressure. The other two are my inventions, and I will be sure to let you know if I can get them to work.

Answer: Sublimation

The change is called sublimation and some substances which can sublime are camphor and iodine. Melting is the process by which solids change into liquids. Wilting is a condition occuring in plants due to excessive transpiration.

Answer: A calculator

A calculator should give you the correct answer, if you are ever interested in finding it out. An abacus was an ancient device used for small calculations with beads. Spinning Jenny was a machine invented in 1769 by James Hergreaves which greatly helped the weaving industry during the Industrial Revolution.

Answer: Mercalli scale

The Mercalli scale is used for measuring earthquake intensity in the range from one to twelve. The Celsius scale is the most commonly used scale for measuring temperature, though the Fahrenheit scale is also commonly used. The Kelvin scale is called the "absolute scale" for measuring temperature and is used mainly for scientific experiments.

Answer: All of these

Evaporation is the process by which water is heated so that only the solid impurities are left behind and then the evaporated water is recovered by condensation. Filtration is the process by which water is passed through a filter of some sort (often paper), thereby removing the impurities. Distillation is also basically evaporation, followed by condensation, but in a complexer manner.

Answer: Linear equation

This problem is a linear equation where the sum of x and y must always add up to 8. Mensuration deals with the area and perimeter of solid objects and figures. Trigonometry is used exclusively for triangles and is useful for surveys. Statistics is useful for business.

Answer: Leucocytes (white blood cells)

Leucocytes consist of five types of cells: monocytes, lymphocytes, basophils, eoisinophils and neutrophils. They produce antitoxins, antibodies and perform other functions to protect us from pathogens. Haemoglobin carries respiratory gases in blood and fibrin helps in the clotting of blood.