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Description
Flashcards by Lidia Infantes, updated more than 1 year ago
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Created by Lidia Infantes
over 2 years ago
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| Question | Answer |
| Atmosphere | Envelope of particles and gasses that surrounds the Earth |
| Origin of Atmosphere | It is biological; the oxygen was released by photosynthetic bacteria |
| Composition of atmosphere | Air: 78% Nitrogen 21% Oxygen 1% Other gases |
| Layers of Atmosphere | Troposphere Stratosphere Mesosphere Termosphere Exosphere |
| Functions of Atmosphere | Protection against solar radiation Regulation of temperatures Source of nutrients: Oxigen for repiration Co2 for photosintesis |
| Hydrosphere | Envelope of water any where and in any state of Earth |
| Composition of Hydrosphere | 97% Saline water(seas and oceans) 3% Fresh water(Ice, ground water...) |
| Origin of Hydrosphere | Terrestrial: water vapour released by volcanoes. Extraterrestrial: Ice in meteorites (comets and ateroids) |
| Properties of water | 1. Great solvent. 2. Hard to heat and cool. 3. Ice less dense than water. 4. chages It's state. |
| Roles of water in living things | 1. Medium for chemical reactions. 2. Transport of substances. 3. Thermoregulator. 4. Aquatic enviroments. |
| Water use in human activities | Domestic uses: for drinking, Agricultural uses: to irrigate crops Industrial uses: cleaning machinery, |
| Water cycle processes | Condensation: Water vapor transforms into small liquid droplets in clouds. Precipitation: Tiny cloud droplets fall out from sky (rain, hail, sleet or snow) Flow: Water circulation on surface or underground. Infiltration: Water infiltrates on soil pores. Evaporation: Liquid water becomes water vapor on air. Transpiration: Living things release water vapor to the atmosphere. |
| Roles of water organisms | Medium for chemical reactions. Transport of substances. Regulation of temperatures. Medium for living organisms. |
| Troposphere | It is the thinnest and densest layer close to the geosphere. It contains about 80% of the atmosphere’s mass. Here, meteorological phenomena occur. |
| Stratosphere | It contains the ozone layer, which absorbs ultraviolet radiation. |
| Mesosphere | Here meteorites burn up, which protect us from their impact. |
| Exosphere | comets and satellites appear in this layer. |
| Greenhouse effect | phenomenon which maintains a constant temperature on Earth due to some atmospheric gases. These gases absorb part of the energy released by the surface as a result of the warming by solar energy. |
| Lake | A large body of water surrounded by land. |
| River | A body of flowing water moveing towards the sea. |
| Weather station | Facility for measuring and recording different meteorological variables. |
| Instruments for mearureing meteorological variables | Thermometer Barometer Hygrometer Anemometer Wind vane Rain gauge |
| Saveing water | Reduce water use Recycle water Prevent contamination |
| Water cycle | The movement of water on the Earth ́s surface and through the atmosphere is caused mainly by solar energy and gravity. |
| Condensation | Water vapor transforms into small liquid droplets in clouds. |
| Precipitation | Tiny cloud droplets fall out from sky (rain, hail, sleet or snow) |
| Flow | Water circulation on surface or underground. |
| Infiltration | Water infiltrates on soil pores. |
| Evaporation | Liquid water becomes water vapor on air. |
| Transpiration | Living things release water vapor to the atmosphere. |
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