11. Do the blue dots on the graph represent an object that sinks or floats in the water? How do you
know?
a. Floats because the blue dots are all
above the line with a slope of 1 g/mL.
b. Floats because the blue dots are all
below the line with a slope of 1 g/mL.
c. Sinks because the blue dots are all above
the line with a slope of 1 g/mL.
d. Sinks because the blue dots are all below
the line with a slope of 1 g/mL.

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size