Energy Transfer Review

How is energy from the Sun transferred?

• by radiation

• by conduction

• by convection

• by the force of gravity

__________ is the transfer of heat by the movement of a fluid.

• Conduction

• Convection

• Radiation

When you heat up an object, the particles in the object move _________.

• faster

• the same speed

• slower

The symbol for specific heat is .......

• c
• Q
• m
• t

A high specific heat means...

• It heats up quickly with energy added
• It requires more energy to change temperature

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

A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.

• 0.46 J/g^oC

• 1.654 J/g^oC

• 2,567,446.875 J/g^oC

How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22.0°C to 55.0°C, if the specific heat of aluminum is 0.903 J/g°C?

• 298 Joules

• 0.003 Joules

• 297 J/g°C

• 0.003 J/g°C

The measure of average kinetic energy of all the particles within an object is called ____________. 

• temperature
• conduction
• radiation
• heat 

Heat always travels from...

• Warm to cool

• Cool to warm

• Warm to warm

• Cool to cool