Answer: Option [B]Imaginary lines joining places with same temperature are called Isotherms. Isotherms are the lines that connect places on a map that have the same temperature. The isotherm lines are almost parallel to the latitudes. It means that the temperature along the latitudes is almost the same.
Answer: Option [C]‘Flash floods’ are associated with Cyclonic storms. A flash flood is a rapid flooding of geomorphic lowlying areas: washes, rivers, dry lakes and basins. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm or cyclone, or melt-water from ice or snow flowing over ice sheets or snowfields.
Answer: Option [D]Smog is a combination of smoke and fog. Smog is a type of air pollutant. The word "smog" is a combination of smoke and fog. Generally, smog results from the burning of a large amount of coal in an area.
Answer: Option [C]The climatic zones are classified on the basis of rainfall. The climatic zones are classified on the basis of maximum and minimum temperatures and the temperature range as well as the total and seasonal distribution of precipitation. Based on these parameters, the most commonly used classification scheme was originally developed by Wladimir Koppen.
Answer: Option [A]The layer of the atmosphere in which Radio Waves are reflected back is called Ionosphere. Solar radiation ionizes the ionosphere. It plays an important role in the energy of the atmosphere and forms the magnetosphere's inner edge. It has practical significance because it affects radio transmission to distant places on the planet, among other functions. It is an electrically conducting region which is capable of reflecting radio signals back to the earth.