QUIZ FOR HEAT AND TEMPERATURE Zartiga, Biong, Dapon.
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Transcript of QUIZ FOR HEAT AND TEMPERATURE Zartiga, Biong, Dapon.
QUIZ FOR HEAT AND
TEMPERATURE
Zartiga, Biong, Dapon
Questions
1. Define Temperature.2-3. Temperature
ConversionIf someone says that the
temperature will be 303 K today, how can you express that temperature in °C and °F?
Questions
4-5. The normal temperature of a chickadee is 105.8°F. What is that temperature in °C and K?
Questions
6. Formula of Average Kinetic Energy.7. It is a measure of total kinetic energy
of a system8. How much heat must be added to a
5000g of water to increase its temperature by 20C? The specific heat of water is 1cal/gC.
9. What is Convection? Give an example.10. What is Conduction? Give an example.
Answers
1. Temperature is a measurement of the average kinetic energy of the molecules in an object or system and can be measured with a thermometer or a calorimeter. It is a means of determining the internal energy contained within the system.
Answers
2. To convert from Kelvin to Celsius:TC = TK - 273TC = 303 - 273 TC = 30°C
To convert from Celsius to Fahrenheit:TF = 9/5(TC) + 32TF = 9/5(30) + 32TF = 86°Fs
Temperature Conversion Answer30°C, 86°F
Answers
6. KEave = (3/2) kT
7. Heat8. Given: m = 5kg or 5000g
c = 1 cal/g ⁰C ∆T = 20 ⁰C
Solution: Q = m c ∆T = 5000g x 1 kcal/g ⁰C x 20⁰C = 100000kcal
Answers
9. Convection: the up and down movement of gases, liquids, and semi-solid materials cause by heat-transfer.
Ex.: Imagine a pot of boiling water. 10. Conduction: transfer of heat through
direct contact with one substance to another.
Ex. You don't want to touch a heated pot on the stove if it's handle is metal--because it too will be heated, and you'll burn yourself.
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