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

Author Question: The volcanic islands visible here formed as a result of a mantle plume. Researchers working on ... (Read 96 times)

jilianpiloj

  • Hero Member
  • *****
  • Posts: 521
The volcanic islands visible here formed as a result of a mantle plume.
 
  Researchers working on these volcanic islands have collected basalt samples for potassium-argon dating to determine when these islands formed Volcanic Island A has been dated to 7.6 million years ago. Volcanic Island C dates back to 3.4 million years ago and is 200 km away from A. Using the equation Rate = Distance/Time, calculate the rate of plate motion for this region.
  A) 4.2 km/million years
  B) 47.6 km/million years
  C) 102.3 km/million years
  D) 26.3 km/million years

Question 2

________ weathering is when physical forces break solid rock into smaller sediments.
 
  A) Mechanical
  B) Chemical
  C) Spheroidal
  D) Differential



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jessofishing

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

Answer: B

Answer to Question 2

Answer: A





 

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

For a complete list of videos, visit our video library