Specific Heat

Why might the metal part of a seatbelt feel like it is a different temperature than the cloth part?

• Because metal and cloth conduct heat differently

• Because metal is always colder than cloth

• Because the metal is made of a different color

• Because the cloth is thicker than the metal

What does thermal conductivity measure?

• How fast a substance transfers thermal energy.

• How much a substance weighs.

• How bright a substance is.

• How loud a substance sounds.

Which material in a seatbelt moves energy quickly?

• The metal

• The cloth

• The plastic

• The foam

Based on the concept of thermal conductivity, which part of the seatbelt would heat up faster in the sun, and why?

• The metal part, because it transfers thermal energy quickly.

• The cloth part, because it is softer.

• The metal part, because it is heavier.

• The cloth part, because it is darker.

What does "specific heat" refer to in science?

• The amount of energy required to change the temperature of 1 gram of a substance

• The amount of energy required to melt a substance

• The amount of energy required to freeze a substance

• The amount of energy required to evaporate a substance

Which unit is commonly used to measure the energy involved in specific heat?

• Joules (J)

• Volts (V)

• Newtons (N)

• Watts (W)

If you want to change the temperature of 1 gram of a substance, which property tells you how much energy you need?

• Specific heat

• Density

• Melting point

• Conductivity

Why is specific heat important when comparing different substances?

• It helps determine how much energy is needed to change their temperature

• It tells us how fast they melt

• It shows how much they weigh

• It indicates their color

Why does the metal in your seatbelt move energy quickly?

• Because it has a high specific heat.

• Because it is made of plastic.

• Because it has a low specific heat.

• Because it is very thick.

Which of the following materials is likely to have a low specific heat?

• Sand

• Water

• Wood

• Air