Describe the greenhouse effect. How does the greenhouse effect contribute to human society? How can it be harmful?
What will be an ideal response?
Solar energy (short wave) passes through the air without much effect. When it strikes a surface, such as the ground,
it is converted to heat. That heat radiates back into the air as infrared (long wave) energy. Some gasses, such as carbon
dioxide and methane, are very effective at trapping that infrared light and converting it back into heat. When
the air is warmed as a result of gasses converting infrared radiation back into heat, the air warms. The warming of
the air is the greenhouse effect.
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These are thin lines used in the view of a section to show where material has been cut.
a. cutting plane lines b. section lines c. dimension lines d. extension lines
To find the watts of electrical power in an electrical circuit, you multiply ____ together.
A. ohms and amperes B. ohms and volts C. volts and amperes D. volts, amperes, and ohms
Technician A says that all port fuel injected systems use the speed density method. Technician B says that throttle body injection systems use the speed density method. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
Reel mowers:
A. are preferred for high quality cuts. B. require more power than rotary mowers. C. have a chopping-like action. D. are easier to maintain than rotary mowers.