Earth Science Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
| weather | the state of the atmosphere at a given time and place |
| climate | based on observations of weather that have been collected over many years |
| nitrogen and oxygen | what two gases make up 99% of the volume of clean, dry air? |
| 0.039% | carbon dioxide is present in only small amounts (approximately 0.039%), but it is an important component of air |
| water vapor | the source of all clouds and precipitation |
| ozone | a form of oxygen that combines three oxygen atoms into each molecule |
| nearly half | emissions from transportation vehicles account for _______ ____ of the primary pollutants by weight |
| 1000 millibars | at sea level, the average pressure is slightly more than _____ _________, or slightly more than 1 kilogram per square centimeter |
| troposphere | the lowermost layer of the atmosphere; it is generally characterized by a decrease in temp. with height |
| stratosphere | the layer of the atmosphere immediately above the troposphere, characterized by increasing temps. with height, due to the concentration of ozone |
| mesosphere | the layer of the atmosphere immediately above the stratosphere and characterized by decreasing temps. with height |
| sun | nearly all of the energy that drives the Earth's variable weather and climate comes from the ___ |
| rotation | the spinning of Earth about its axis |
| revolution | the movement of Earth in its orbit around the sun |
| 23.5 degrees | Earth's axis is not perpendicular to the plane of it orbit around the sun. instead its tilted ____ _______ |
| June 21 or 22 | summer solstice |
| December 21 or 22 | winter solstice |
| September 22 or 23 | autumnal equinox |
| March 21 or 22 | spring equinox |
| heat | the energy transferred from one object because of a difference in their temperatures |
| temperature | a measure of the average kinetic energy of the individual atoms or molecules in a substance |
| conduction | the transfer of heat through matter by molecular activity |
| higher; lower | heat flows from the ______ temperature matter to the ______ temperature matter |
| convection | the transfer of heat by mass movement of circulation within a substance |
| sun | the ___ is the ultimate source of energy that causes our weather |
| 300,000 | Electromagnetic waves travel through the vacuum of space at ________ kilometers per second |
| radiation | the transfer of energy (heat) through space by electromagnetic waves |
| reflection | __________ occurs when an electromagnetic wave bounces off an object |
| scattering | __________ produces a larger number of weaker rays that travel in different directions |
| 50% | about ____ of the solar energy that strikes the top of the atmosphere reaches Earth's surface and is absorbed |
Created by:
VickieJ10
Popular Earth Science sets