« previous next »

Author Question: Why do stars twinkle? What will be the ideal response?[br][br][b][color=#FBB117]Question ... (Read 199 times)

tiffannnnyyyyyy

  • Hero Member
  • *****
  • Posts: 512
on: Jul 13, 2018
Why do stars twinkle?
  What will be the ideal response?

Question 2

Describe the double meaning of the expression once in a blue moon.
  What will be the ideal response?


alexanderhamilton

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 13, 2018
Answer to Question 1

ANSWER: As starlight enters the atmosphere, it often passes through regions of differing air density. Each of these regions deflects and bends the tiny beam of starlight, constantly changing the apparent position of the star. This causes the star to appear to twinkle or flicker, a condition known as scintillation.


Answer to Question 2

ANSWER: For blue suns to appear, the size of the suspended particles must be similar to the primary wavelengths of visible light. When these particles are present, they tend to scatter red light more than blue, which causes a bluing of the Sun and a reddening of the sky. Although rare, the same phenomenon can happen to moonlight, making the moon appear blue; thus, the expression once in a blue moon. (The term blue moon also refers to the second full moon in a calendar month that has two full moons).


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Allergic response by allergens. Allergic response by allergens.
Color enhanced X-ray showing a pacemaker implanted in the left side of the chest and the electrode w Color enhanced X-ray showing a pacemaker implanted in the left side of the chest and the electrode w
Functions application question Functions application question
economic question economic question
Economics question Economics question
The CRISPR/Cas system mediates an adaptive immune response in prokaryotes The CRISPR/Cas system mediates an adaptive immune response in prokaryotes
Video: How does an animal choose what food to eat?

For a complete list of videos, visit our video library