Why might increasing the temperature alter the rate of a chemical reaction?
A. The density decreases as a function of temperature and this leads to an increase in volume which drops the rate of reaction.
B. The molecules are less reactive at higher temperatures.
C. The molecules will more likely combine with other atoms at high temperature to save space.
D. The molecules will have a higher kinetic energy and bump into one another harder.
E. none of the above
Answer: D
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A fuel assembly in a nuclear power plant consists of
A. About one hundred pellet-filled rods bundled together B. About a thousand fuel rods C. Fuel pellets packed into a hollow rod D. Neutron-absorbing material such as cadmium E. Fuel pellets arranged in a cube and encased in plastic
What was Ellsworth Huntington’s conclusion about the relationship between climate and civilization?
a. That climate was poorly related to the degree of civilization of a people b. That Europe and the northeastern United States were associated with the highest levels of civilization c. That climate was correlated with size of skull d. That climate shaped what forms of wilderness protection certain civilizations pursued
Species that are found in only one area are called ____________________ and are especially vulnerable to extinction
Fill in the blanks with correct word
Which of the following Caribbean countries is NOT located on an island?
A) Guyana B) Jamaica C) Haiti D) Cuba E) Trinidad and Tobago