This topic contains a solution. Click here to go to the answer

Author Question: What hindered the acceptance of the continental drift theory? a. There was no evidence of tropical ... (Read 36 times)

stock

  • Hero Member
  • *****
  • Posts: 573

What hindered the acceptance of the continental drift theory?
  a. There was no evidence of tropical plants ever existing in currently cold areas.
  b. The explanation of centrifugal effect as the driving force behind the continents moving.
  c. The discovery of similar fossils found on different continents.
  d. The general shape of the continents.



Question 2

What features did Dr. Ballard not encounter during his National Geographic exploration to the midocean
  ridge?
  a. the rift valley
  b. faults and fractures
  c. lava flow
  d. tube worms




Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

frogdreck123456

  • Sr. Member
  • ****
  • Posts: 329
Answer to Question 1

ANS: B
Alfred Wegener believed the continents were slung toward the equator due to a combination of the
Earth spinning and tidal drag. This was not a sufficient enough explanation for the acceptance of
continental drift. Later it would be discovered that seafloor spreading and plate tectonics would
explain the force of his theory. Information can be found in the section Pieces of Earth's Surface Look
Like They Once Fit Together.



Answer to Question 2

ANS: D
Dr. Ballard traveled 9100 ft in Alvin to observe the structure of a mid-ocean ridge including the rift
valley, fissures, cracks, and faults, and lava flows. Information can be found in the section Insight
from A National Geographic Explorer: Dr. Ballard recounts an expedition to a mid-ocean ridge.




stock

  • Hero Member
  • *****
  • Posts: 573
Both answers were spot on, thank you once again




 

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

For a complete list of videos, visit our video library