Science Crossword

the whole mass of air that surrounds the Earth
The lowest layer of the atmosphere
the region of the upper atmosphere extending upward from the tropopause
the part of the earth's atmosphere between the stratosphere and the thermosphere in which temperature decreases with altitude
A region of the earth's atmosphere where ionization caused by incoming solar radiation affects the transmission of radio waves.
the highest region of the atmosphere, where the air density is so low that a fast-moving air molecule
the exertion of force upon a surface by an object, fluid, etc., in contact with it
the height of anything above a given planetary reference plane
a layer in the earth's stratospherecontaining a high concentration of ozone, which absorbs most of the ultraviolet radiation reaching the earth from the sun.
a colorless unstable toxic gas with a pungent odor and powerful oxidizing properties, formed from oxygen by electrical discharges or ultraviolet light
Radiation in the part of the electromagnetic spectrum where wavelengths are just shorter than those of ordinary, visible violet light but longer than those of x-rays.
any of a class of compounds of carbon, hydrogen, chlorine, and fluorine, typically gases used in refrigerants and aerosol propellants.
he emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.
the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.