SCIENCE 7 LONG TEST

What is heat?

• A measure of temperature

• A form of energy transfer due to temperature differences

• A measure of the kinetic energy of particles

• A unit of temperature measurement

Heat flows from regions of _____ temperature to regions of _____ temperature.

• higher, higher

• lower, higher

• higher, lower

• lower, lower

What is the unit of heat in the International System of Units (SI)?

• Kelvin (K)

• Celsius (°C)

• Fahrenheit (°F)

• Joule (J)

Which of the following statements is true about temperature?

• It is a measure of the average kinetic energy of particles in a substance.

• It is a measure of the potential energy of particles in a substance.

• It is a measure of the volume of a substance.

• It is a measure of the density of a substance.

Which of the following materials is an insulator?

• Metal

• Glass

• Copper

• Aluminum

What is the primary purpose of insulators?

• To facilitate heat transfer

• To reduce heat transfer

• To conduct electricity

• To absorb heat

Which of the following materials is a conductor?

• Rubber

• Plastic

• Wood

• Copper

What is the characteristic of a good conductor?

• Low thermal conductivity

• High thermal conductivity

• Low density

• Low melting point

What is the characteristic of a good insulator?

• High thermal conductivity

• Low thermal conductivity

• High density

• High melting point

How does an insulator differ from a conductor regarding heat transfer?

• Insulators transfer heat more easily than conductors.

• Conductors reduce heat transfer, while insulators facilitate it.

• Insulators have high thermal conductivity, while conductors have low thermal conductivity.

• Conductors have high thermal conductivity, while insulators have low thermal conductivity.