« previous next »

Author Question: How do scientists measure the age of rocks at mid-ocean ridges? A) radioactive dating methods ... (Read 226 times)

futuristic

  • Hero Member
  • *****
  • Posts: 638
on: Jul 16, 2018
How do scientists measure the age of rocks at mid-ocean ridges?
 
  A) radioactive dating methods
  B) comparison of rock samples on mountain ranges
  C) fossil stratification and the principle of horizontality
  D) magnetic polarity measurements

Question 2

How fast is North America moving away from Africa?
 
  A) 3 cm/year
  B) 3 m/year
  C) 3 mm/year
  D) 3 km/year


Fayaz00962

  • Sr. Member
  • ****
  • Posts: 330
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

futuristic

  • Hero Member
  • *****
  • Posts: 638
Reply #2 on: Jul 16, 2018
TY


Fayaz00962

  • Sr. Member
  • ****
  • Posts: 330
Reply #3 on: Jul 16, 2018
Happy to Help


« previous next »
 

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

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 ...
Methods to Document Peripheral Pulses A. Stick Figure Peripheral Pulse Documentation B. Tabular Peri Methods to Document Peripheral Pulses A. Stick Figure Peripheral Pulse Documentation B. Tabular Peri
Using a goniometer to measure joint ROM. Using a goniometer to measure joint ROM.
Jewish Scientists Jewish Scientists
Fish in the Ocean Fish in the Ocean
Variations in the Ocean’s Surface Temperature and Salinity with Latitude Variations in the Ocean’s Surface Temperature and Salinity with Latitude
Determ ine the measure of angle x Determ ine the measure of angle x
Video: Types of synapses - electrical & chemical

For a complete list of videos, visit our video library