y24 t2 science

Question 1

conduction

Answer 1

Conduction is when heat moves from one object to another object through direct touch.

Question 2

insulation

Answer 2

insulations slows and prevents the flow of conductive and convective heat flow

Question 3

convection

Answer 3

Convection is the process of transferring heat through air or liquid currents

Question 4

radiation

Answer 4

process where heat is transferred from one body at a high temperature to one body at a low temperature

Question 5

conductor

Answer 5

materials that allow heat to pass through them

Question 6

whats a medium

Answer 6

a substance that transfers energy from one substance to another

Question 7

thermal expansison

Answer 7

when particles heat, they expand and when they cool they contract

Question 8

absorption and emission

Answer 8

absorption: takes up energy from electromagnetic radiation
emission: gives off electromagnetic radiation

Question 9

surface colour

Answer 9

lighter colours reflect radiation and darker colours absorb and emit radiation

Question 10

surface texture

Answer 10

shiny objects reflect more thermal radiation. dull surfaces absorb more radiation

Question 10

surface area

Answer 10

more surface area = more energy absorption and emission

Question 11

surface temperature

Answer 11

more temperature = increase in energy of body’s particles (thermal expansion)