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=Determine if the subject of each case study is alive. Prepare to defend your choice. =

Case 1: A wind up toy car You turn the key on the car for about 6 turns. You then place it on the floor. It begins to move forward until it hits a wall. It spins until it is again able to move forward. The key is unwinding as it moves. It again hits a wall, spins, moves forward in a different direction. After about 40 seconds it stops.

Case 2: A gasoline car You turn the ignition key and the engine roars to life. You begin to move down the street. In a few minutes the engine warms and exhaust fumes leave the tailpipe. At a stop sign, you bring the car to a complete stop and then move forward again. You swerve to avoid a squirrel in the road. That forces you into a tree and the car stops suddenly. Luckily you are not hurt.

Case 3: A burning candle As you watch it, you observe the flame seems to be reaching for the ceiling. It flickers as someone opens a door into the room. After a while you notice hot wax running down its sides. You observe that the candle itself is getting smaller even though the flame has gotten larger. You notice a thin veil of smoke coming from the candle.

Case 4: A balloon You pick up a new balloon and place its end in your mouth. You slowly exhale into it forcing the elastic vinyl of the balloon to stretch. When it seems as thought it can hold no more air, you let it go. You watch it fly quickly about the room, noticing that it hit the wall and then changed direction. In no time at all it rests on the floor, flattened again.

Case 5: Hurricane Floyd It began as a tropical depression off the coast of Africa. As it moved across the warm waters of the Atlantic, its winds increased along with its diameter until it reached hurricane strength. As it moved over the Bahamas its winds diminished somewhat as it dropped rain on the land below. Over open water, it again had an increase in wind speed and traveled toward Florida. As a cold front from the west approached it, Floyd changed direction slightly north. After making landfall in N. Carolina, its wind speed began to decrease rapidly and huge amounts of rain fell on the eastern US.