Do Now Thursday , January 09, 2014. You heat a balloon filled with air. What happens to the pressure inside of the balloon? Why?. 3.5 minutes. Do Now Check. By the end of the day today, IWBAT… Explain and calculate specific heat.
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Thursday, January 09, 2014
Do Now Check
Why it matters in LIFE: Explains why certain objects are made out of certain materials
Why it matters in THIS CLASS: This is the last topic we are covering before spring break – you will have a mastery quiz on Monday so let’s hit 85%!
CONDUCTORS: change heat easily
Low Specific Heat
Require little energy to change temp
INSULATORS: Do NOT change heat easily
High Specific Heat
Require LOTS of energy to change temp
Based on what you learned yesterday about temperature and pressure, what actually happens to the balloon?
Q = mCDT
Q = mC(Tf – Ti)
Q = heat (joules-J)
m = mass (kg)
C = specific heat (J/kg °C)
DT = change in temp (°C)