The scale on an altimeter indicates altitude, but an altimeter actually measures ____
A) temperature
B) density
C) pressure
D) humidity
C
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A 50-kg sack is lifted 2 m in the same time as a 25-kg sack is lifted 4 m. The power expended in raising the 50-kg sack compared to the power used to lift the 25-kg sack is
A) twice as much. B) half as much. C) the same.
Complementarity is sufficient to explain the interdependence between places
Indicate whether this statement is true or false.
Reaction of country rock with solutions from a cooling magma is known as ____ alteration
A)geostatic B)geohydrous C)geothermal D)hydrothermal E)hydrostatic
Why has water quality degraded in the Edwards aquifer?
A) The aquifer is recharged by rivers flowing into karst limestones. B) The city of San Antonio lies in the recharge zone. C) Pollution has entered the aquifer via springs in the San Marcos area. D) The aquifer is confined in its southern part, and is easily contaminated in that area.