If the slope angle increases, the downslope force due to gravity increases, and then the block may start to move if the downslope force is large enough.
a. true
b. false
Answer: a. true
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Which of the following best describes the Freeze Separation Method for desalination?
A) A current is run through positive and negative electrodes in freshwater separated by semipermeable membranes from seawater. B) Large icebergs are brought to coastal waters off countries that need freshwater where they are melted. C) Saltwater is boiled and the water vapor is passed through a cooling condenser, where it condenses as freshwater. D) Seawater is frozen and thawed multiple times, with the salts washed from the ice between each thawing. E) Water on the salty side of a semipermeable membrane is pushed under high pressure through the membrane to the freshwater side.
Do clear skies accompany stable, unstable, or neutral stability conditions? Explain your answer.
What will be an ideal response?
Glucose, C6H12O6, is a simple sugar that the body metabolizes into two molecules of pyruvic acid, C3H4O3. Is the glucose oxidized or reduced as it transforms into pyruvic acid?
A. The glucose is reduced. B. The glucose is oxidized. C. Parts of the glucose molecule are oxidized, while others are reduced. D. Glucose is neither oxidized nor reduced as it transforms into pyruvic acid.
This occurs when a large mass of cold air slides underneath a large mass of warm air:
A) orographic lifting. B) convergence. C) frontal lifting. D) convective lifting.