The sun also heats up the plants and trees. They lose moisture out of their leaves that is called transpiration‚ it goes into the air. The vapor in the air gets cold and changes back to liquid. This condensation creates clouds. When the clouds get so heavy from the condensation they release precipitation in the form of rain‚ hail‚ sleet or snow. This precipitation falls directly into the ocean and over the land‚ the water travels over and under the land and heads back to the streams
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The biochemical importance of water Sam Ellick 13/11/2010 Water otherwise known as H2O is a necessity for life to exist. It has many unique features compared to other molecules of its size. For example solid ice is less dense than liquid ice‚ which ponds and lakes freeze from the top down. This is important in insulating the aquatic life in the winter. This essay however will be looking at why water is so important in biochemical terms. Its shape Water‚ as its formula H2O suggests‚ consists
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compounds such as tert-butyl alcohol‚ sec-butyl alcohol‚ n-butyl alcohol‚ and an unknown. o Principle: Boiling point is the temperature at which gas and liquid phases coexist in equilibrium. At this temperature‚ the vaporization rate and the condensation rate are equal. The liquid and vapor reach a state of dynamic equilibrium: liquid molecules evaporate and vapor molecules condense at the same rate. The boiling point of a liquid is the temperature at which its vapor pressure equals atmospheric
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Unit 1 This scheme of work suggests possible teaching and learning activities for each section of the specification. There are far more activities suggested than it would be possible to teach. It is intended that teachers should select activities appropriate to their candidates and the curriculum time available. The first two columns summarise the specification references‚ whilst the Learning Outcomes indicate what most candidates should be able to achieve after the work is completed. The Resources
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warm‚ light air begins to rise it does not push so hard against the earth‚ this is low pressure. Colder‚ heavier air sinks downwards pushing on the earth more‚ this is high pressure. 10.Definitions- temperature‚ melting‚ freezing‚ evaporation‚ condensation‚ convection‚ jet stream‚ wind
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Chapter 5 Questions for Thought 1. Explain the reasoning behind the wintertime expression‚ “Clear moon‚ frost soon”? On clear‚ calm nights‚ objects and the earth surface cools off by emitting infrared radiation. This cooling effect is more rapid on clear night than cloudy nights since there is no clouds to emit back to the surface. Hence the phrase “clear moon‚ frost soon”. The cool surface is then mixed with air above it‚ which will eventually cool to the dew point and water vapor will appear
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water an excellent solvent for the cell? What is stepwise polymerization? Know the four major macromolecules and their roles in cell biology Know the proper subunits of each macromolecule (i.e. sugar subunits form polysaccharides). What are condensation and hydrolysis reactions? Which is considered anabolic? Catabolic? ATP and NADH are examples of……? What is the difference between strict and assisted self-assembly. Lecture 5 Know the different non-covalent interactions/bonds involved in protein
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Matter‚ Solutions‚ and Phase Changes Unit 1. What is matter? Anything that takes up space (volume) and has mass 2. Explain how to classify matter. (Homogeneous‚ Heterogeneous‚ Mixture‚ Pure Substance)? HOMOGENEOUS Matter that is made up of the same or alike particles Can’t see what makes it up Looks uniform HETEROGENEOUS Matter that is made up of different types of particles Can see what makes it up Mixture A material made up of two or more substances that can be easily separated
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Managing Water Supply Freshwater * Only 3% of the Earth’s water is fresh water‚ 97% is sea water. * Only 1% of the total amount of water is available for human use. Water as a scarce resource Reasons for scarcity: - Due to increasing demand as annual global use of water has increased 7 fold. -Uneven distribution of precipitation -Climate change leads to disturbances to water cycle - Deforestation leads to higher surface runoff which causes less clean water. - Poor or improper farming practices
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• Wet Rot • Dry Rot • Subsidence/heave • Thermal expansion • Woodworm • Architectural acoustics • Damp(structural) • Efflorescence/sub-florescence • Chemical attack • Freeze/thaw action • Failure under load • Splitting (wood) • Condensation • Fire spread • Fracture WET ROT The first building defect we will be looking at is dry rot and wet rot. Wet rot is a fungal attack on wood that can have serious affects if it is not taken care of properly. Wet rot is dry rot that is after
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