Problems About Transfer of Energy, Heat, Specific Heat and Changes in Temperature

What does temperature measure?

• Heat of Molecules
• ºC
• Average Kinetic Energy of Molecules
• Thermal Energy

Tags

NGSS.HS-PS3-2

Specific heat is....

• The measure of kinetic energy of an objects particles
• A measure of the energy needed to increase the average kinetic energy of the particles
• The heating caused by the motion of flluid due to temperature difference
• The transfer of energy by electromagnetic radiation

Tags

NGSS.HS-PS3-4

How does heat flow?

• Always from cold to warm
• Always from warm to cold
• Both warm to cold & cold to warm
• It depends on the temperature

Tags

NGSS.HS-PS3-4

The amount of energy required to raise the temperature 1ºC for every kilogram is called____?

• Thermal Energy
• Specific Heat
• Temperature
• Kinetic Energy

What is the equation to measure change in Thermal Energy?

• Q=mc∆t
• Q=mc
• Q= ∆mct
• m=QC

What is the symbol for Thermal Energy in the specific heat formula?

• Q
• t
• m
• C

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degrees celsius. Which cup has the MOST thermal energy?

• Large cup (Trenta)
• Small cup (Tall)
• Medium cup (Venti)
• All three are the same temperature so they have the same thermal energy

Tags

NGSS.HS-PS3-4

What unit do you use to measure Thermal Energy?

• J/Kg ºC
• Kg
• ºC
• J

Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using 10,000 JOULES of thermal energy.  What material would be have the LARGEST change in temperature?

• Copper
• Carbon Steel
• Zinc
• Stainless Steel

A high specific heat means...

• It requires less energy to change temperature
• It requires more energy to change temperature
• It heats up very quickly