1. oil or water clinging to a surface of a jar is an example of: a) lubrication b) adhesion c) force d) magnetism 2. friction always results in the loss of energy, force, electrons, or heat in the form of energy, force, heat, or electrons. 3. what do tire treads, rubber mats, automobile brakes, and tennis shoes have in common? a) they reduce friction b) they are lubricants c) they increase friction d) they reduce static electricity

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.