Describe the history of energy use in the United States over the past 200 years
What will be an ideal response?
Answer: As wood for energy use depleted forests, different fuels were needed. Coal was first used as a substitute for wood in the mid-19th century. When motor vehicles were developed in the early 1900s oil became an important energy source. As technology developed to harness the energy from natural gas, the use of gas increased substantially. Coal is still used today, primarily for electricity production.
You might also like to view...
A tectonic plate can consist of continental crust or oceanic crust, but not both
a. True b. False
What describes a fish species with a narrow tolerance of temperature changes?
a. Stenohaline b. Eurythermal c. Stenothermal d. Euryhaline
Use Figure 8.20 to compare the P-wave velocities of oceanic and continental crust at a depth of 10 km. Why are these velocities different?
What will be an ideal response?
The structure of benzo[a]pyrene has how many 6-membered rings?
A) 3 B) 4 C) 5 D) 6