This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The corona can only be glimpsed from Earth during a(n) ________. Fill in the blank(s) with ... (Read 20 times)

audragclark

  • Hero Member
  • *****
  • Posts: 579
on: Jul 27, 2018
The corona can only be glimpsed from Earth during a(n) ________.
 
  Fill in the blank(s) with correct word

Question 2

Which of the following models best explains why our galaxy has spiral arms?
 
  A) No model can explain the existence of the arms, which rotate with the galaxy like the fins of a giant pinwheel toy.
  B) The spiral arms were imprinted on the galaxy at its birth. Ever since, like a coiling rope, the spiral arms have been wound tighter with each galactic rotation.
  C) The spiral arms are composed of groups of stars that are bound together by gravity and therefore always stay together as the galaxy rotates.
  D) The spiral arms are a wave of star formation caused by wave of density propagating outward through the disk of the galaxy.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

debra928

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 27, 2018
Answer to Question 1

total solar eclipse

Answer to Question 2

D


audragclark

  • Member
  • Posts: 579
Reply 2 on: Jul 27, 2018
:D TYSM

hollysheppard095

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Size comparison of Earth and Uranus Size comparison of Earth and Uranus
The Sun is the nearest star to Earth. The Sun is the nearest star to Earth.
The Solar Corona The Solar Corona
Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called
The Arctic is warming faster than any other region on Earth The Arctic is warming faster than any other region on Earth
Formation of the Early Earth Formation of the Early Earth
Video: Dissociative Disorders (Part 2)

For a complete list of videos, visit our video library