Sarah's group designed this oven and eventually melted the
chocolate, but it took a very long time. sarah suggested a design
modification: she thought they should cover the bottom of the box
with black paper and leave the aluminum foil up above. is sarah
correct? why or why not?
a)
b)
no. the top and bottom should be covered with
aluminum foil to reflect the rays of the sun
no. the bottom and sides of the box should be
covered with rolled up newspapers to insulate
the box
yes. a black bottom will absorb more heat energy
when the sunlight is reflected into the box by the
foil.
not completely. sarah is correct about the bottom. it
should be black. but the rest of the box should be
black to absorb heat energy
c)
d)