Chapter 5

Question 1

What is thermal energy

Answer 1

The energy of moving or vibrating particles

Question 2

What is the law of conservation of energy

Answer 2

Energy can neither be created nor destroyed,only converted from ice form of energy to another.

Question 3

What is a thermal equilibrium

Answer 3

When the objectsand surroundings will have the same temperature

Question 4

What is insulation

Answer 4

Anything that can reduce the loss of heat from an object and the gain of heat from surroundings.

Question 5

What is temperature

Answer 5

A measure of the kinetic energy its particles. Hotter substances have particles that are moving or vibrating faster. As the temperature drops, particles lose kinetic energy.

Question 6

What 3 ways can heat be transferred

Answer 6

Conduction
Convection
Radiation

Question 7

What is conduction

Answer 7

A method of heat transfer in which heat is passed by vibration of particles in or between solid, liquid and gas substances.

Question 8

What is convection

Answer 8

The transfer of heat ina liquid or a gas due to less dense, water particles rising and denser cooler particles falling

Question 9

What is radiation

Answer 9

Radiation is the movement of heat in the form of electromagnetic waves, which travel from water substances to cooler substances.