| A | B |
| evaporation | Water in oceans and lakes is heated by the Sun and rises as water vapor into the air through the process of ___. |
| condensation | Cool air in the atmosphere causes water vapor to clump together to form dew, fog, or clouds through the process of ___. |
| precipitation | When the water droplets in the clouds become large enough they will fall to the ground as rain, sleet, or snow through the process of ___. |
| Plants take in carbon dioxide to be used during photosynthesis. | How does carbon move from the atmosphere to plants? |
| Animals get carbon when they eat plants or when they eat animals that eat plants. | How does carbon move from plants to animals? |
| When plants & animals die, their bodies decay depositing the carbon into the ground. | How does carbon move from plants & animals to the ground? |
| Trees | ___ take in more carbon dioxide from the atmosphere then they add to it. |
| fuels are burned | Carbon moves from fossil fuels to the atmosphere when ___. |
| It traps the Sun’s heat in the atmosphere. | What makes carbon dioxide a greenhouse gas? |
| Nitrogen can be fixed by bacteria or lightning. | Before nitrogen gas can be used by plants, it must be fixed or changed into a usable form. How does nitrogen get fixed? |
| nitrogen | Many farmers use fertilizers to add ___ to the soil to help plants grow larger and faster. |
| oxygen | The Gulf of Mexico Dead Zone is a large region of water that is very low in ___. |
| warm | Tropical air masses form near the equator, so they are ___. |
| dry | Air masses that form over land are ___. |
| The cold air mass moves beneath the warm air mass. The warm air is pushed up and cools, which produces brief heavy precipitation and sometimes thunderstorms. After a cold front passes, the weather usually becomes clear and cooler. | What happens when a cold front moves into an area? |
| Meteorology | ___ is the study of the Earth's atmosphere and the variations in atmospheric conditions that produce weather. |
| Galveston Hurricane of 1900 | The ___ is the deadliest natural disaster ever to strike the US. |
| Climate | ___ is the average of all weather conditions through all seasons over a period of time. |
| temperature and precipitation | What are the major factors that determine climate? |
| warmer | The closer a place is to the equator, the ___ the place will be. |
| colder | The higher in altitude a place is, the ___ the place will be. |
| The surface features of Earth | ___ can influence how wet or dry a place may be. |
| Atmospheric circulation | ___ can influence climate by producing winds that distribute heat and moisture. |
| temperate | Louisiana has a ___ climate, because it has cold winters, warm summers, & moderate precipitation. |