Question

Kato is out camping with his family, and they decide to start a campfire because of the cold air. After everyone roasts marshmallows to a crispy golden brown, they eat them, and then they decide to go to sleep. Before going to sleep, Kato pours water over the campfire to put it out. He notices that steam drifts from the burned wood and ashes even though the fire is gone and the coals have stopped glowing.

Which statements best describe how energy is conserved in this scenario?

Select all that apply.


The liquid water absorbed the energy of the fire, so it changed into a gas and evaporated.
The liquid water absorbed the energy of the fire, so it changed into a gas and evaporated.

The cold air absorbed energy from the water vapor, so it condensed and formed steam.
The cold air absorbed energy from the water vapor, so it condensed and formed steam.

The marshmallows absorbed energy form the fire, so they changed color to a golden brown.
The marshmallows absorbed energy form the fire, so they changed color to a golden brown.

The wood absorbed energy from the fire, so some of it changed into a gas and some formed ashes.

Answer 1

which one do you think it is ?

Answer 2

I think it's A and C

Answer 3

i agree with you on A but ¨C¨ im not to sure about i was thinking maybe A and B because the marshmallows wouldnt change how the energy is conserved

Answer 4

It seems possible that A, B and C are all correct, but I'm not completely sure about B
It is true that the water absorbed energy from the fire; it is also true that the air absorbed energy from the water vapor (although, it is not clear that the steam "condenses" like option B mentions); I would also agree that the marshmallows absorb energy from the fire, since that is the point of cooking food