US ING SC IENCE TO F IND A SOLUT ION

MELTING ICE CREAM PROBLEM

STANDARDS

• S8P1c. Describe the movement of particles in solids, liquids, gases, and plasmas states.

• S8P2d. Describe how heat can be transferred through matter by the collisions of atoms (conduction) or through space (radiation). In a liquid or gas, currents will facilitate the transfer of heat (convection).

PROBLEM• You work on an ice cream cart at Six Flags, and you have had customers complain that the ice cream is too soft and melts (becomes liquid) too quickly after they purchase it. • If sales continue to fall because of this problem, YOU WILL BE FIRED!!

• Currently the carts use H20 (water) ice to keep the ice cream cold. You need to come up with an alternative solution to H2O ice. Your supervisor has suggested dry ice would be better, but needs you to scientifically prove it is better .

PROBLEM

• Create a business proposal for the CTO (chief thrill officer) that scientifically explains that dry is better than water ice.

PRODUCT

• Depict states of matter from a particle perspective• Describe how matter an and phase

changes are affected by energy• Explain heat transfer via conduction,

convection, and radiation.

PROCESS