When we say an appliance "uses up" electricity, we really are saying that
A) current disappears.
B) electric charges are dissipated.
C) the main power supply voltage is lowered.
D) electrons are taken out of the circuit and put somewhere else.
E) electron kinetic energy is changed into heat.
E
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The Coriolis effect causes the wind directions of circulation cells. Indicate whether the statement is true or false.ANS: F
The Coriolis effect is only able to influence the direction of the wind. There are different circulation cells as the heat moves from the equator to the poles. These atmospheric cells gradually move eastward. Information can be found in the section The Atmosphere Moves in Response to Uneven Solar Heating and Earth's Rotation.
What type of eruption is mainly responsible for producing plateau basalts? What will be an ideal response?
Emission testing is required by federal law in areas that have had problems meeting health-based air quality standards. Such areas typically include industrialized urban areas and large cities. Supporters of this practice argue that all citizens benefit because vehicles with malfunctioning pollution control systems are identified. They also cite government data showing average failure rates of 10%. Critics of the testing argue that, of those vehicles that fail, 90% are vehicles 5 or more years old. A law has been placed on the ballot to save citizens money by no longer requiring vehicles less than 5 years old be tested unless they are obviously malfunctioning.Suppose the law passed. What is likely to happen to air quality in those areas where testing is required?
A. There should be little change to air quality. B. Air quality should improve a lot. C. Air quality should decline a lot.
Species extinctions are inevitable, so expending resources on combating species loss is pointless
Indicate whether the statement is true or false