| A | B |
|---|
| Climate can be described in terms of it's | temperature and humidity |
| Frost action will not happen unless the temperature | is below freezing |
| Frost action can't happen without | water |
| In cold climates frost action increases with humidity because humidity is | water |
| Climate is also affected by the size and number of | cities |
| Climate is affected by the carbon dioxide content in | the air |
| What size particles will weather faster? | small |
| The prcesses that produce changes on the surfaces of rocks exposed to the atmosphere is called | weathering |
| What are the 4 major factors of chemical weathering? | oxygen, water, carbon dioxide and acids |
| The layers of gases surrounding the earth - | atmosphere |
| The layer of water that rests on or penetrates the lithosphere - | Continuous hydrosphere |
| Continuous shell of solid rock around the earth - | lithosphere |
| When substances in rocks are changed to different ones, usually simpler - | chemical weathering |
| Frost action, forces of growing plants and when rock split along planes of weakness are types of | physical weathering |
| Changes that occur in rocks during weathering result in a breakdown of material - | physical weathering |
| What happens when a substance is heated (NOT WATER)? | it expands |
| When something(NOT WATER) is cooled what happens? | it contracts |
| What happens when water is heated? | it contracts |
| What happens when water is cooled? | it expands |
| This is the alternate freezing and thawing of water | frost action |
| What are two plants that can grow in the cracks of rocks to weaken them and make them break? | mosses and lichens |
| What are the two most important factors in frost action? | temperature of the rocks and the water in them |
| What gas causes oxidation? | oxygen |
| What is a chemical reaction involving oxygen? | oxidation |
| What percentage of the atmosphere does oxygen make up? | 21% |
| Chemical reactions are sped up by - | water |
| What percentage of the atmosphere is carbon dioxide? | 1 % |
