Answer:
The amount of moisture air can hold is dependent on its temperature and pressure. The warmer the air the greater the quantity of water vapour it can contain. The air temperature is measured with a normal thermometer this is the Dry-Bulb reading. The actual amount of moisture known as the mixing ratio is measured in grams of water per kilogram of dry air. When air at a certain temperature is saturated it cannot hold any more moisture. The relative humidity of the air is the ratio of the actual amount of moisture in the air to the fully saturated amount.
We can use evaporation to measure the amount of moisture in the air. A wet cloth is placed over the bulb of a thermometer and then air is blown over the cloth causing the water to evaporate. Since evaporation takes up heat, the thermometer will cool to a lower temperature than a thermometer with a dry bulb at the same time and place. The depression in Wet-Bulb temperature allows the humidity to be calculated. If the air is fully saturated (100% relative humidity) the water cannot evaporate, so both the wet and dry bulb temperatures are the same. If the dry and wet bulb temperatures are set to the same value the calculator will show the saturation mixing ratio the amount of water in saturated air at that temperature.
If partly saturated air is cooled without changing its pressure or amount of water vapour, a point is reached when it becomes saturated. The moisture will be given up as dew or ice crystals. This temperature is the Dew Point. This is why condensation will form on a bottle of cold beer, as the air in the vicinity of the bottle is cooled below its dew point. Meteorological reports usually quote the temperature and dew point as well as the station pressure. Moisture content and relative humidity can be calculated from these figures.
The Psychrometer is the name of a device containing both a wet and dry bulb thermometer. This can be a fixed device for meteorology or a handheld sling psychrometer that is often used in air conditioning applications.
Explanation:
Answer:
The balanced equarion is
4Fe + 3O2-------> 2(Fe2O3).
Explanation:
A-Weathering: wear away or change the appearance or texture of something by long exposure to the air.
Example:soil,rocks, minerals
B-erosion: The process of eroding or been eroded by wind water or other natural agents.
Example: removes soil,rock,or dissolved minerals
Difference : shape, bone structure, dont have the same amount of fingers
Same: they all mock eachother with having some type of fingers
Answer:
Primary succession occurs in areas without any soil where basically nothing is there. After an event such as a volcanic eruption, pioneer species such as lichens and mosses are able to colonize the land since they can grow without soil and are primitive. Lichens can break down rock to form soil and they can add small amounts of organic matter to the rocks when they decompose to make even more soil. Simple plants like ferns can then grow in the created soil. After these simple plants die, more organic material is added to the soil and the soil thickens, allowing grasses, wildflowers, and other plants to begin to take over. Next, after these plants die, enough nutrients are added to the soil for trees and shrubs to survive. Finally, insects, small birds, and mammals begin to move into the area and form a community, so what was once bare rock can now support a variety of life.
