« previous next »

Author Question: The diurnal rotation of the stars refers to the A) apparent rotation of the celestial sphere due ... (Read 29 times)

MGLQZ

  • Hero Member
  • *****
  • Posts: 579
on: Jul 29, 2018
The diurnal rotation of the stars refers to the
 
  A) apparent rotation of the celestial sphere due to the rotation of the Earth.
  B) movement of the stars across the sky during daytime hours.
  C) rate of spin of stars in their formation stage.
  D) particular constellations that are visible in different times of the year.

Question 2

What is the upper limit of stars the unaided eye can discern on a moonless night in a rural area?
 
  A) about 3000
  B) about 30,000
  C) about 300,000
  D) about 3,000,000


Jmfn03

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Animation of the apparent retrograde motion of Mars in 2003 as seen from Earth Animation of the apparent retrograde motion of Mars in 2003 as seen from Earth
Range of Motion of the Hip Joint, Position of the Leg for Full External Rotation Range of Motion of the Hip Joint, Position of the Leg for Full External Rotation
Range of Motion of the Spine, Rotation Range of Motion of the Spine, Rotation
Pre–Main-Sequence Stars Pre–Main-Sequence Stars
A typical 1/2 inch drive air impact wrench. The direction of rotation can be changed to loosen or ... A typical 1/2 inch drive air impact wrench. The direction of rotation can be changed to loosen or ...
Sperry’s classic study of eye rotation and regeneration. Sperry’s classic study of eye rotation and regeneration.
Video: Complement Proteins Animation

For a complete list of videos, visit our video library