P2 quiz

What is an insulator?

• A coat
• Something that. doesn't allow heat to pass through it
• Something to stop music
• Something that allows heat to pass through

Thermal conductivity is....

• How fast heat passes through something
• How hot certain materials get
• Something that doesn'treadily allow heat to pass theough
• Metals

Thermal energy transfers _______________________.

• when temperatures are equal.

• from higher temperature to lower temperature.

• from lower temperature to higher temperature.

• because both objects have high temperatures.

____________ is thermal energy transfer that occurs in objects that are in contact with each other.

It is a 'picture' of the (infra red) radiation given off by objects. What is it?

___________ is the ability of a material to conduct heat.

• specific heat

• thickness

• surface area

• conductivity

Insulators have ___________________.

• high specific heat and low conductivity.

• high specific heat and high conductivity.

• low specific heat and low conductivity.

• low specific heat and high conductivity.

Which factors affect the conductivity of a material?

• specific heat

• thickness

• surface area

• all of the above are correct

What unit do you use to measure Thermal Energy?

• J/Kg ºC
• Kg
• ºC
• J

What is Specific Heat capacity?

• The amount of thermal energy required to increase the temperature of 1kg of a material by 1°C.

• The amount of radiant energy required to increase the temperature of 1kgof a material by 1°C

• The amount of energy required to increase the temperature of 1kgof a material by 1°C.

• The amount of friction required to increase the temperature of 1kgof a material by 1°C.