There are 2 causes of meningits - viruses and bacteria. Bacterial meningitis tends to be much more dangerous. Viral meningitis is referred to as aseptic meningitis and tends to be more mild. Viral meningitis usually takes 3-7 days to incubate in a person after exposure. At that point they become contagious. They usually stop being contagious after 10 days. Most meningitis is spread through saliva and mucus from the nose.
Heat travels by conduction and radiation in solids and by convection in fluids like air and water. Radiant energy waves travel from the Sun through space and become heat energy when absorbed by a substance or materialâi.e., the Earth.
The sun is the major source of energy for the Earth system. Heat from Earthâs interior also supplies energy, but the amount of energy is much smaller. Energy from the sun and from Earthâs interior moves through the geosphere, hydrosphere, biosphere, and atmosphere.hat You Will Learn â¢ Heat flow is the transfer of energy from a warmer object to a cooler object. â¢ Energy from the sun, the major source of energy for phenomena on Earthâs surface, is transmitted to Earth by radiation.