« previous next »

Author Question: Which of the following best describes the Milky Way Galaxy? A) a spiral galaxy with a disk about ... (Read 68 times)

storky111

  • Hero Member
  • *****
  • Posts: 561
on: Jul 27, 2018
Which of the following best describes the Milky Way Galaxy?
 
  A) a spiral galaxy with a disk about 100,000 light-years in diameter and containing between 100 billion and 1 trillion stars
  B) a spherically shaped collection of stars including our solar system and about a dozen other solar systems, stretching about 4 light-years in diameter
  C) a spherically shaped collection of about 1 million stars that is about 100 light-years in diameter
  D) a spiral galaxy with a disk about a billion kilometers in diameter and containing between 100 million and 1 billion stars
  E) a spiral galaxy with a disk about 100,000 light-years in diameter and containing about 100,000 stars

Question 2

The core, mantle, and crust of a planet are defined by differences in their
 
  A) temperature. B) density. C) strength. D) geological activity.


bookworm410

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Herniated intervertebral disk: the herniated nucleus pulposus is applying pressure Herniated intervertebral disk: the herniated nucleus pulposus is applying pressure
Spiral tongue of butterflies Spiral tongue of butterflies
Barred Spiral Galaxies Barred Spiral Galaxies
Seyfert Galaxy NGC 1566 Seyfert Galaxy NGC 1566
Robert Smithson, Spiral Jetty, Great Salt Lake, Utah. Robert Smithson, Spiral Jetty, Great Salt Lake, Utah.
Disk of Enheduanna Disk of Enheduanna
Video: Power Supply Polyacrylamide Gel Protein Sample

For a complete list of videos, visit our video library