Question

A student wants to study the effect of adding thermal energy to a system. Which of the following experiments should the student perform?

Heat water and record its change in temperature with time.
Freeze water and record its change in temperature with time.
Close a circuit by adding a paperclip and record if the bulb glows.
Close a circuit by adding a wooden piece and record if the bulb glows.

Answer 1

Am i right with A?

Answer 2

Yep, do you know why?

Answer 3

It could be either A or B...though thermal energy is representing the amount of heat being excessed from what I recall

Answer 4

Yes you're correct. Automatically C and D aren't correct because they have no correlation to temperature. And then heat would be thermal would be in relation to heat so freezing makes no sense

Answer 5

And B would not make sense since your recording the change of state of frozen water

Answer 6

Thank you

Answer 7

yw