Which of the following statements is true?
A) Both heat and temperature are forms of energy.
B) Neither heat nor temperature is a form of energy.
C) Heat is a form of energy, but temperature is not.
D) Temperature is a form of energy, but heat is not.
C
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An Alka-Seltzer antacid tablet bubbles vigorously when placed in water but only slowly when placed in an alcoholic beverage of the same temperature containing a 50:50 mix of alcohol and water
Propose a probable explanation involving the relationship between the speed of a reaction and molecular collisions. A) The alcohol absorbs the carbon dioxide bubbles before they escape the liquid phase. B) Alcohol molecules are more massive than water molecules, hence they move slower and their collisions are not as forceful. C) The tablet reacts with water but not the alcohol. D) In a 50 : 50 mix there are fewer water molecules for the antacid molecules to collide with.
Where does groundwater discharge naturally?
a. only in the ocean b. only in springs c. only in streams d. only in aquifers e. wherever the groundwater table intersects the ground surface
What capital letter does the Köppen system use to identify a tropical climate?
a. A b. H c. C d. D e. E
Potential energy would best be expressed when
A. atoms moving at 200 km/hr. B. atoms moving at 500 km/hr. C. pulling or pushing an object. D. changing a liquid to a gas.