In a battery, if the following oxidation-reduction reactions takes place normally: Mn2O3 + ZnO ? 2 MnO2 + Zn What reaction would be taking place if you were charging the battery?
A) 2 MnO2 + Zn ? Mn2O3 + ZnO
B) ZnO ? Zn
C) Mn2O3 ? MnO2
D) all of the above
E) none of the above
A
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The stratosphere is a wind current that blows from west to east.
Answer the following statement true (T) or false (F)
The U.S. government Strategic Plan for the Climate Change Science Program (CCSP) has five major goals related to the role of earth scientists in society. 1) Improve knowledge of the Earth's past and present climate and environment, including its natural variability, and improve understanding of the causes of observed variability and change. 2) Improve quantification of the forces bringing about changes in the Earth's climate and related systems. 3) Reduce uncertainty in projections of how the Earth's climate and related systems may change in the future. 4) Understand the sensitivity and adaptability of different natural and managed ecosystems and human systems to climate and related global changes. 5) Explore the uses and identify the limits of evolving knowledge to manage risks and
opportunities related to climate variability and change.Which of the earth-system scientist's roles is best illustrated by goal number 3? A. Alerting public of natural hazards B. Ensuring the future of human life C. Use of earth resources D. Informing society
The amount of water vapor in the air compared with the greatest amount that could be present at a given temperature is:
a. saturated humidity. b. specific humidity. c. absolute humidity. d. relative humidity.
If the earth did not have an atmosphere, there would still be a hydrologic cycle
Indicate whether the statement is true or false