Thermal Energy

Question 1

Thermal energy

Answer 1

the internal energy of an object due to the kinetic energy of its atoms and/or molecules. The atoms and/or molecules of a hotter object have greater kinetic energy than those of a colder one, in the form of vibrational, rotational, or, in the case of a gas, translational motion.

Question 2

Specific heat

Answer 2

the heat required to raise the temperature of the unit mass of a given substance by a given amount (usually one degree).

Question 3

the quality of being hot; high temperature.

Answer 3

Heat

Question 4

Conduction

Answer 4

the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.

Question 5

Convection

Answer 5

the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.

Question 6

Radiation

Answer 6

the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.

Question 7

Thermal insulation

Answer 7

the process of insulating against transmission of heat

Question 8

Temperature

Answer 8

the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.