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

Author Question: What is the meaning of the solar constant? A) the regularity of the 11-year sunspot cycle B) the ... (Read 73 times)

ss2343

  • Hero Member
  • *****
  • Posts: 548
on: Jul 27, 2018
What is the meaning of the solar constant?
 
  A) the regularity of the 11-year sunspot cycle
  B) the amount of energy the Earth receives per unit area and unit time
  C) the stability of the Sun's luminosity for as long as life has existed on Earth
  D) the fact that features on the Sun appear to never change
  E) the fact that the amount of hydrogen turning into helium in the core is fixed

Question 2

Ptolemy was important in the history of astronomy because he ________.
 
  A) was the first to believe that all orbits are perfect circles
  B) was the first to create a model of the solar system that placed the Sun rather than the Earth at the center
  C) developed the first scientific model of the universe
  D) developed a model of the solar system that made sufficiently accurate predictions of planetary positions to remain in use for many centuries


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

gabrielle_lawrence

  • Sr. Member
  • ****
  • Posts: 353
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

D


ss2343

  • Hero Member
  • *****
  • Posts: 548
Reply #2 on: Jul 27, 2018
TY


gabrielle_lawrence

  • Sr. Member
  • ****
  • Posts: 353
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

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?

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.

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.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Evolutionary shift in plant life cycle stage dominance. Evolutionary shift in plant life cycle stage dominance.
The Solar Corona The Solar Corona
On May 15, 1916, after deliberating for one hour, an all-white jury in Waco, Texas, found seventeen- On May 15, 1916, after deliberating for one hour, an all-white jury in Waco, Texas, found seventeen-
Sexual Response Cycle Sexual Response Cycle
Life Cycle Nutrition: Toddlers through the Later Years Life Cycle Nutrition: Toddlers through the Later Years
Life cycle of a conifer (pine) Life cycle of a conifer (pine)
Video: Cortisol (protein catabolism, gluconeogenesis, vasoconstriction & anti-inflammation)

For a complete list of videos, visit our video library