hab_ref_table

hab_ref_table - What Makes a World Habitable? Use this...

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What Makes a World Habitable? Use this table to identify the factors (and the appropriate levels) that will enable you to design your habitable worlds. Factors that make a Planet Habitable Not Enough of the Factor Just Right Too Much of the Factor Situation in the Solar System Temperature Influences how quickly atoms & molecules move Low temperatures cause chemicals to react slowly, which interferes with the reactions necessary for life. Also low temperatures freeze water, making liquid water unavailable. Life seems limited to a temperature range of minus 15 o C to 115 o C. In this range, liquid water can still exist under certain conditions. At about 125 o C, protein and carbohydrate molecules and genetic material (e.g., DNA and RNA) start to break apart. Also, high temperatures quickly evaporate water. Surface: Only Earth’s surface is in this temperature range. Sub-surface : The interior of the solid planets & moons may be in this temperature range. Water D issolves & transports chemicals within and to and from a cell The chemicals a cell needs for energy & growth are not dissolved
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This note was uploaded on 06/06/2011 for the course CHEM 3040 taught by Professor Reddy during the Spring '10 term at Taylor's.

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