Mary has two blocks. She wants to compare the mass and volume of both, so she places them in identical buckets filled with the
same volume of water. Each block sinks slowly, and the picture below shows them as they are about to sink. She measures the
change in water level with rulers.
Block A
water level
rises 2 cm
Block B:
water level
rises 1 cm
Mary's friend observes the investigation and claims that block B has more mass. If there were no errors in the investigation, which
of the following must be TRUE for this claim to be correct?
A. Block B must be longer than block A.
B. Block B must have greater density than block A.
Block B must be larger than block A.
Block B must have more volume than block A.
C.
D.