| A | B |
|---|
| radiation | the transfer of energy through empty space |
| conduction | heat transfer within a material or between materials |
| convection | heat transfer by movement of currents in fluid |
| pangea | supercontinent |
| fossil | ancient organsims preserved in rock |
| continental drift | idea that continents were once joined all together |
| density | mass per amount of volume |
| mantle | where convection currents occur |
