« previous next »

Author Question: The average polarity interval between magnetic reversals over the last 15 million years has been ... (Read 101 times)

Charlie

  • Hero Member
  • *****
  • Posts: 640
on: Jul 16, 2018
The average polarity interval between magnetic reversals over the last 15 million years has been
 
  A) 20,000 years.
  B) 200,000 years.
  C) 2,000,000 years.
  D) 2,000 years.

Question 2

The magnetic north pole migrates about
 
  A) 40 km per decade.
  B) 40 cm per day.
  C) 40 m per month.
  D) 40 km per year.


helenmarkerine

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Measurements of solar cycle variation during the last 30 years Measurements of solar cycle variation during the last 30 years
New Magnetic Cycle New Magnetic Cycle
The basalt below the hominins is dated to 1.8 million years ago, and the geomagnetic polarity of the The basalt below the hominins is dated to 1.8 million years ago, and the geomagnetic polarity of the
Results from sequential study of two cohorts tested at three ages and at three different points in t Results from sequential study of two cohorts tested at three ages and at three different points in t
Change in Emotional States During Adolescence Average emotional state becomes teadilyi more negativ Change in Emotional States During Adolescence Average emotional state becomes teadilyi more negativ
During the Pullman strike in Chicago, workers protesting wage cuts did $340,000 in property damage, During the Pullman strike in Chicago, workers protesting wage cuts did $340,000 in property damage,
Video: Introduction to Dysrhythmia

For a complete list of videos, visit our video library