Energy Transfer Practice

Which of the following is the best thermal conductor?

• Air

• Deionized Water

• Gold

• Graphite

Tags

NGSS.MS-PS3-3

The table contains information about the thermal and electrical conductivity for many different materials.  Thermal conductivity is a measure of how well materials transfer heat.  Electrical conductivity is a measure of how well materials transfer electricity.  The higher the number the more conductive the material.  The opposite of conductivity is resistivity, so the lower the conductivity, the greater the resistivity.  Materials with low conductivity values make good insulators.

Which of the following is the best electrical conductor?

• Cotton

• Diamond

• Glass

• Copper

Tags

NGSS.MS-PS2-3

According to the table, which of the following is the best thermal insulator?

• Cotton

• Porcelain

• Wood

• Silver

According to the table, which of the following is the best electrical insulator?

• Diamond

• Plastic

• Steel

• Wood

What do most of the good thermal conductors have in common?

• They are mostly natural fibers.

• They all contain glass.

• They are mostly metals.

• They are mostly solids.

Tags

NGSS.MS-PS3-3

With very few exceptions, what is the relationship between thermal conductors and electrical conductors?

• There is no relationship between the two.

• Good thermal conductors are good electrical conductors.

• Good thermal conductors are poor electrical conductors.

• Good thermal conductors are high density metals.

Classify the following as an example of heat transfer as conduction, convection, or radiation:

heat from the sun.

• conduction

• convection

• radiation

Classify the following as an example of heat transfer as conduction, convection, or radiation:

steam rising from hot tea.

• conduction

• convection

• radiation

Classify the following as an example of heat transfer as conduction, convection, or radiation:

a cup gets hot when hot coffee is poured in.

• conduction

• convection

• radiation

Classify the following as an example of heat transfer as conduction, convection, or radiation:

hot air balloon.

• conduction

• convection

• radiation

Tags

NGSS.MS-PS3-4