Heat and Thermodynamics

The SI unit of heat and energy is the __________.

• calorie
• heat
• joule
• watt

How much heat does an aluminum block absorb if 10.0 grams are heated from 25.0^oC to 50.0^oC? The specific heat of aluminum is 0.900J/g^oC.

• 450 J

• -450 J

• 225 J

• -225 J

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If 100. g of aluminum at 145ºC gains 6,800. J of heat, what is the final temperature (T_final) of the aluminum? Aluminum has a specific heat of 0.897 J/gºC. (Q=msΔT)

• -69.0°C

• 0.522°C

• 221°C

What quantity of heat is required to raise the temperature of 45 grams of water from 15°C to 85°C? The specific heat capacity of water is 4.184 J/g/°C.

• 13000 J

• 16000 J

• 130 kJ

• 70 J

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In heat transfer, heat always flows from the _______________ substance to the _______________ substance.

• Hotter to colder
• Colder to hotter
• Hotter to hotter
• Colder to colder

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NGSS.HS-PS3-4

The amount of energy required to raise the temperature of 1 gram of a substance by 1^o C is known as:

• Specific heat capacity

• Heat of fusion

• Heat of vaporization

• Melting point

Warm air rises and the cool air sinks demonstrates this type of heat transfer. 

• conduction
• convection
• radiation
• Insolation 

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Ironing a shirt is an example of...

• condensation
• conduction
• convection
• radiation

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Transfer of thermal energy through "space"

• conduction
• convection
• radiation

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What  is the formula to calculate heat energy required to raise the temperature of any substance?

• Q=mc∆t
• Q=mc
• Q= ½mv
• m=QC

Tags

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