Physics

Question 1

Conduction

Answer 1

Is when heat travels from atom to atom and leading heat,energy or electricity from a hot end to a cold end.

Question 2

Convection

Answer 2

Transferring heat from one place to another by the movement of fluids for instance liquids such as water.

Question 3

Radiation

Answer 3

Energy that is given out by objects,that travel by infra-red waves,which can travel through vacuum.

Question 4

Convection Current

Answer 4

During the day the land warms up more than the sea, the warm air rises over the land, and cool air falls over the sea so we feel a sea breeze.

Question 5

How does the vacuum flask/tharmos work?

Answer 5

Keeps tea hot or ice cream cold by reducing or stopping Conduction,Convection and Radiation. It is a double-walled glass bottle, in the space between the walls both pieces of glass are coated with shiny bright silvering, and the air is pumped out to form a vacuum. A vacuum is used because it stops energy transfer,by stopping Conduction and Convection. The silvering on one glass wall reduces Radiation of energy and the silvering on the other glass wall reflects back infra-red rays that may have been radiated.