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☆☆☆☆☆Pitch is determined by sound wave frequency; how fast something is vibrating. High-pitched sounds are higher frequency meaning they are vibrating faster. Low pitch means they are vibrating slower.
variety
evaporation from the sea floats up and forms clouds. when the clouds become too heavy they perspire! and the whole process starts again
As air parcels cool due to expansion of the rising air mass, water vapor begins to condense on condensation nuclei such as dust, ice and salt. This process forms clouds.
FOR A+ WATER AND ICE IS THE ANSWER
to help improve the steam engine
Photons
There is a potential for profit in technology.
Polar Circulation
pigments
virtual image
The Yellowstone volcano is usually called a supervolcano.
Learning more about subatomic particles
Percolation leads to water entering an aquifer.
All carbon based fuels produce carbon dioxide when burned. These include:
- fossil fuels (coal. oil, natural gas)
- alcohols
- bio-fuels (wood, charcoal, waste burning including cremation)
- specialty industrial fuels (acetylene etc.)
- carbon monoxide
Coal and petroleum are the two primary fossil fuels. Oxidizing methane also releases CO2, but that is 25 times better than releasing methane, itself an even more potent greenhouse gas.
The distance of the Earth from the sun does not contribute to the changing seasons. Although this distance does change (since the Earth's orbit is elliptical, not perfectly circular) the amount of the change is not great enough to affect the seasons. It is the angle of incidence of solar radiation, which in turn is affected by the axial tilt of the Earth and its revolution around the sun, which creates the changing seasons.
Water vapor in the air compared to the amount of water vapor that air could hold at a given temperature.
an opening in the earths crust
