SCIENCE QUEST
Terms
undefined, object
copy deck
- an anemometer
- used to measure wind speed
- radiation
- heat directly from the source to you. (sun, fire, electric heater). cannot be seen.
- polar easterlies
- extend from poles to 60 degrees north and south. the coriolis effect makes them blow from east to west
- gravity
- force that pulls down. (earth gravity - force that pulls down to the center of the earth.
- global convection currents
- the movement of air between the equator and the poles produce global winds due to the unequal heating of the earth.
- sea breeze
- usually during the day wind from over the ocean blow onto land becuase it is cool air moving to take warmer airs place because it rises
- winds are named for..
- where they originate from. not from where they are headed.
- stratoshpere
- 2nd layer of atmosphere. upper and lower. upper is warmer becuase it contains the ozone layer.
- bernoulli's principal
- the pressure in a moving fluid (gas or liquid) is less than the pressure in the surrounding fluid........... the faster a fluid moves the less pressure. pressure is FORCE applied to a certain area. so less pressure in this case means less force.
- coreolis effect
- earth rotates from west to east. the winds move north to south or south to north. due to combine forces the wind travels in a curve.
- wind
- horizontal movement of air caused by differences in pressure
- trophosphere
- 1st layer of atmosphere. weather occurs.
- convection
- transfer of heat by movement of a fluid. molecules can move through fluids and they take their heat with them.
- exosphere
- part of thermosphere. called outerspace or space. thousands of km satellites, TV, and phone signals.
- ionosphere
- part of thermosphere. innerspace. ions are created. radio waves bounce off ions. Aurora Borealis- sun hits atoms to make them glow.
- nuetral boyant
- when there is a balanced force between gravity and bouyancy
- prevailing westerlies
- blow from west to east toward the poles between 30 degrees and 60 degrees north and south latitude
- trade winds
- strong winds that blow towards equator from 30 degrees north and south. used for moving sailing ships.
- difference in pressure is caused by...
- unequal heating of the earth
- local wind
- wind that blows over short distances
- the greenhouse effect
- Some of the energy that is absorbed by the earth is radiated back into the atmosphere as infrared radiation. This energy forms a "blanket" that holds heat in.
- jet streams
- in the trophoshpere. high speed winds that blow west to east.
- global winds
- winds over long distances
- horse latitudes
- 30 degrees north and south the air starts to move to the pole. very weak
- land breeze
- usually during night wind from over the land blow onto the ocean becuase it is cool aire moving to take the warmer air's place because it rises.
- increasing the surface of an object can..
- increase bouyancy
- mesosphere
- 3rd layer of atmosphere. coldest pary of atmosphere. meteoroids burn up here.
- thermosphere
- last layer of atmosphere. very hot becuase its closest to the sun. divided into ionosphere and exosphere.
- doldrums
- winds near equator, very weak
- buoyancy
- the force of a fluid pushing up on an object
- win-chill factor
- the wind moving over your skin decreases your temp
- conduction
- the direct transfer of heat from one substance to another.(0bjects are touching. works best with solids)