Thermal energy transfer

Question 1

conduction

Answer 1

when two objects of different temps are in direct contact. Heat is transferred from one particle to another when those particles collide

Question 2

Ice in hand

Answer 2

Quick vibrating particles in hand bump into slow particles in the ice cube
The particles in hand transfer kinetic energy to particles in ice
The average kinetic of hand decreases average kinetic energy of ice increases

Question 3

Natural convection

Answer 3

The motion of fluid. As a fluid is heated the hotter goes to the top as it is less dense and colder sinks

Question 4

Forced convection

Answer 4

The motion of a fluid that is caused by forces outside it

Question 5

Radiation

Answer 5

Electromagnetic waves whcih transmit energy from source to absorber
no movement of particles

Question 6

Conductor

Answer 6

Any material which which thermal energy flows through
Metals
This is because they have free electrons

Question 7

Insulator

Answer 7

Any material which thermal energy flows slow