Thermodynamics & Temperature Conversions

What is the original source of the most of the energy that people use?

• By radiation from the sun.

• By radiation from the Earth's core.

• By convection from the sun.

• Conduction from Earth's core.

Which best explains how this roasting marshmallows happens?

• Heat from the fire is conducted into the marshmallow.

• The coolness of the marshmallow is conducted into the fire.

• Heat from the fire is radiated into the marshmallow.

• The coolness of the marshmallow is radiated into the fire.

Which of the following is an example of convection?

• Boiling spaghetti noodles in water.

• hair dryer is drying up your hair

• when a car engine turns hot after being turned on.

• a spoon placed in the cup filled with cold coffee

What heat transfer happens when you put the pan in the open stove?

• conduction

• convection

• radiation

• transmutation

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

• convection

• radiation

• conduction

Heat transfers from an area of ________ temperature to an area of _______ temperature.

• low to high

• high to low

• high to high

• low to low

Walking on a warm sand with your bare feet shows this type of heat transfer.

• conduction

• convection

• radiation

Ironing a shirt is an example of:

• conduction

• convection

• radiation

• condensation

Clark accidentally grabbed the handle of the hot pt. This shows ______________.

• radiation

• convection

• condensation

• conduction

This is the transfer of thermal energy through "space".

• convection

• conduction

• radiation

• transmutation