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The type of energy transfer that can take place with little or no matter present is radiation.
radiation
condensation
Plasma
if there is radiation in the vacuum, then it's not really a vacuum.
The type of energy transfer that can take place with little or no matter present is radiation.
Radiation can go right through empty space.
radiation
condensation
liquid and gas
Plasma
In what state must matter exist for fusion reactions to take place
No
Where? Everywhere. This is the residual radiation, from when the Universe was very, very hot.
the state of matter that changes shape when placed in a different container is water
if there is radiation in the vacuum, then it's not really a vacuum.
A vacuum is a space where there is no, or very little matter (ex. air molecules). One example of a vacuum is outer space. Because there is no matter for heat to travel through via convection or conduction, radiation is the only heat transfer that can take place in a vacuum.