(a) If we are only concerned about physical energy efficiency, the most energy e
ID: 1229723 • Letter: #
Question
(a) If we are only concerned about physical energy efficiency, the most energy efficient way for a person to travel from one place to another?1. Walk.
2. Drive alone in a typical American car.
3. Cram 4 people in a Honda civic.
4. Take a city bus.
5. Ride a bike.
(b) According to recent scientific evidence and calculations, the earth formed about 4.55 billion years ago. Ture or False?
(c) Most of the power flowing to the earth from the sun is used to keep the earth warm, power the weather, and support life. Only a tiny amount of this radiates back into space. Ture or False?
Explanation / Answer
(a) If we are only concerned about physical energy efficiency, the most energy efficient way for a person to travel from one place to another?
1. Walk.
2. Drive alone in a typical American car.
3. Cram 4 people in a Honda civic.
4. Take a city bus.
5. Ride a bike.
(b) According to recent scientific evidence and calculations, the earth formed about 4.55 billion years ago. Ture or False?
(c) Most of the power flowing to the earth from the sun is used to keep the earth warm, power the weather, and support life. Only a tiny amount of this radiates back into space. Ture or False?
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