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Energy Notes Page 3 ©Mark Place,
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What’s the difference between kinetic and potential energy?
Energy Transfer What’s the difference between kinetic and potential energy? Give a real-life example of each.
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THROWING A BOWLING BALL WATER FLOWING IN A RIVER
Kinetic Energy energy in motion EXAMPLES SKIING DOWNHILL THROWING A BOWLING BALL WATER FLOWING IN A RIVER
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Potential Energy stored energy EXAMPLES AT THE TOP OF A SKI SLOPE WATER BEHIND A DAM
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What are the three ways that energy can be transferred
between objects? Give one real-life example of each.
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Example: occurs in _____________ ________________of molecules
conduction solids occurs in _____________ ________________of molecules collision Example:
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differences in density
convection liquids & gases occurs in _____________________ caused by ____________________ differences in density
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convection examples:
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From where do convection ovens heat? From the top or the bottom?
refrigerators cool? From the top or the bottom?
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travel by _____________
radiation waves travel by _____________ Examples:
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How are different types of
energy told apart? by their wavelengths Which is more powerful? Short or long waves? short
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How does energy get from
the Sun to the Earth? radiation
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Best Absorbers dark & rough Best Reflectors light colored & smooth
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A good absorber is a good RADIATOR
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Energy NOTES ©Mark Place,
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Temperature Conversion
Fill in the chart below using your Earth Science Reference Tables. Fahrenheit (°F) Celsius (°C) Kelvin (K) 30 330 -1 272 86 303 135 57
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Describe the word TEMPERATURE in relation to molecular motion.
Temperature Conversion Describe the word TEMPERATURE in relation to molecular motion. Cold Hot
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At absolute zero, all motion stops. 0oK -273°C -459°F
Temperature Conversion What happens to molecular motion at absolute zero? What temperature is this in all temperature scales? At absolute zero, all motion stops. 0oK -273°C -459°F
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the amount of energy required to raise the temperature of
Specific Heat the amount of energy required to raise the temperature of 1 gram of a substance 1°C Please go to Page 1 of the Earth Science Reference Tables.
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Why does water heat up and cool it has a higher specific heat
down slower than land? it has a higher specific heat
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the lead because it has a lower specific heat
If you heated equal masses of basalt and lead, which one would record a faster increase in temperature? Explain how you know. the lead because it has a lower specific heat
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Which Earth material has the greatest specific heat?
liquid water
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Electromagnetic Energy can be:
Reflected Refracted Transmitted Scattered
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Reflected Reflection: Bounced back
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Refracted Refraction Bent
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Transmitted Transmission Pass through unchanged
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Reflected, Refracted and Transmitted
Scattered Reflected, Refracted and Transmitted
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100 Units 19 Units 6 Units 20 Units 4 Units 51 Units
Incoming Solar Radiation 100 Units Absorbed by atmosphere and clouds 19 Units Scattered by atmosphere 6 Units Reflected by clouds 20 Units Reflected from Earth’s surface 4 Units Absorbed at Earth’s surface 51 Units
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Heating Curve for Water
Draw the graph of water heating. Label the following terms in their correct places: condensation, vaporization, solidification, melting. Heat lost vaporization (+2260 J/g) gas 100 condensation ( J/g) melting (+334 J/g) liquid Temperature (oC) solidification (-334 J/g) solid Heat added
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2260 2260 334 334 Check the box which describes whether energy
is gained or lost for each process. Process Energy Gained Energy Lost Condensation Evaporation Melting Solidification How many Joules per gram (J/g) are gained or lost by water for each of the following processes? Process Joules / gram Gained Joules / gram Lost Condensation Evaporation Melting Solidification 2260 2260 334 334
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