Comparing energy transfers Flashcards
1
Q
What does the insulated plastic lid do?
A
The insulated plastic lid stops the heat
escaping (and entering) by convection
and conduction.
2
Q
What does the vacuum do?
A
The vacuum between the two glass walls stops the heat escaping (and entering) by conduction. Glass is also a poor conductor.A vacuum has no particles.Conduction and convection need particles.
3
Q
What does the silvered inner and outer do?
A
The silvered inner and outer stops the
heat escaping (and entering) by
radiation and reflects the radiation
back into the flask.
