Procedure Fill the bowl about halfway with water. The first step will be making a Cartesian diver that just barely floats. If you used Option 1: The ketchup or soy sauce condiment packet: test out a few packets to find one that just barely floats by a corner. A paper clip may be used to weigh it down if needed. Option 2: A medicine dropper: partially fill the dropper with water, so that it just slightly floats. Option 3: A pen cap and modeling clay or silly putty: use the clay or putty to trap air inside the pen cap and close the open side. You may have to experiment a bit with how much clay or putty to use to make the pen cap float. Fill the 2-liter bottle to the top with water, and gently place your Cartesian diver inside. Put the cap back on tightly. Make your hypothesis and identify the variables, and record them on your lab report. You will be applying pressure to the bottle and observing the effects on the diver. According to Pascal's law, this pressure will be evenly distributed in the liquid. What will happen to the diver

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

The last few miles of the marathon are the most difficult for heather, her hair plastered to her head, sweat clinging to her arms, and her legs already feeling as if they had nothing left, just dead weight. after grabbing a cup of ice water, she feels the ice cubes smash against her nose as she gulps some cool refreshment and keeps on running. in these last few miles, the breeze kicks up and she finally feels some coolness against her skin. drips of sweat, once clinging to her forehead, now spill down, and heather feels more pain as the sweat flows into her eyes. which of the following is the most likely reason why the ice struck heather’s nose when she took a drink? a) water can function as a solvent. b) water can store large amounts of heat. c) water can moderate temperatures through evaporative cooling. d) the density of water decreases when it freezes. e) water has a cohesive nature. sweat remained on heather’s forehead and arms because of the a) high salt content of sweat b) cohesive nature of water c) ability of water to moderate heat d) high evaporative cooling effect of water e) ability of water to act as a solvent

What are the other two pieces of glassware you used in this experiment that you could obtain hundredths digit accuracy?