| A | B |
| water can pass through a substance | permeable |
| if water cannot pass through a substance it is | impermeable |
| the percent of pore space inside an object is the | porosity |
| what is estuary? | fresh wate and salt water meet |
| what are 4 things that influence climate? | elevation, latitude , closeness to water body, proximity to mountain |
| what are 3 major climates zones? | tropical, temperate and polar |
| which one do we live in? | temperate |
| our atmosphere is _ %and _%oxygen | 78% and 21% |
| which layer of the atmosphere do we live in? | troposphere |
| which layer of the atmosphere has the ozone layer? | stratosphere |
| what does the ozone layer protect us from? | W radiation |
| what chemical destroys ozone molecules? | cfc,c |
| which layer of the atmoshpere do meteors burn up in? | mesosphere |
| which layer of the atmosphere is the hottest? | themosphere |
| which method of heat transfer moves heat in circular currents? | convection |
| which method of heat transfer moves heat in waves? | radiation |
| the weater after a warm front is __than before | warmer |
| __ pressure systems are bad weather-storm and rain | low |
| __ pressure systems are good weather-sunny dayss | high |
| _% of the water on earth is saltwater found in the _ | 97%and ocean |