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

Author Question: Suppose you are using the Doppler technique to look for planets around another star. What must you ... (Read 89 times)

melina_rosy

  • Hero Member
  • *****
  • Posts: 531
Suppose you are using the Doppler technique to look for planets around another star. What must you do?
 
  A) Compare many spectra of an orbiting planet taken over a period of many months or years.
  B) Compare the brightness of the star over a period of many months or years.
  C) Carefully examine a single spectrum of an orbiting planet.
  D) Compare many spectra of the star taken over a period of many months or years.

Question 2

Why are there fewer large craters on the seafloor than on the continents?
 
  A) The seafloor crust is younger than the continental crust.
  B) The oceans slow large impactors and prevent them from making craters.
  C) The oceans erode away craters faster than erosion processes on land.
  D) Large impactors primarily strike land masses.
  E) Large impactors aim for life-forms such as dinosaurs.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

reelove4eva

  • Sr. Member
  • ****
  • Posts: 332
Answer to Question 1

D

Answer to Question 2

A




melina_rosy

  • Member
  • Posts: 531
Reply 2 on: Jul 27, 2018
Gracias!


scottmt

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Excellent

 

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

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.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

For a complete list of videos, visit our video library