« previous next »

Author Question: How do the effective radiating temperatures determined in part (b) compare with the value for Earth, ... (Read 79 times)

Sufayan.ah

  • Hero Member
  • *****
  • Posts: 512
on: Jul 14, 2018
How do the effective radiating temperatures determined in part (b) compare with the value for Earth, and why is this result surprising?
 
  What will be an ideal response?

Question 2

The mean surface temperatures of Venus and Mars are 730 K and 218 K, respectively. Using the answer to part (b), determine the magnitude of the greenhouse effect on each planet.
 
  What will be an ideal response?


EAN94

  • Sr. Member
  • ****
  • Posts: 307
Reply #1 on: Jul 14, 2018
Answer to Question 1

The values of Te for both Venus and Mars are 219.7 K and 212.5 K respectively, which in both cases is considerably less than the Te value for earth (255 K). This is surprising because one might presume that because Venus is closer to the Sun than both Earth and Mars, and consequently intercepts greater solar flux, its Te value would be greater than Earth, and much greater than Mars. However, as pointed out, this is not the case. Instead, the high albedo of Venus causes much of the Sun's radiation to be reflected, and this in turn causes the effective temperature to be lower than expected.

Answer to Question 2

Greenhouse Effect: Tg= Ts-Te
Given: Ts (Venus)= 730 K
Ts (Mars)= 218 K

Venus: Tg (Venus)= Ts(Venus)-Te(Venus)
Tg (Venus)= 730 K  219.7 K
Tg (Venus)= 510.3 K

Mars: Tg (Mars)= Ts(Mars)-Te(Mars)
Tg (Mars)= 218 K  212.5 K
Tg (Mars)= 5.5 K


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

The Periodic Table (Part 2) The Periodic Table (Part 2)
The Sun as it appears from the surface of the Earth at sunrise. The Sun as it appears from the surface of the Earth at sunrise.
Part A - Calculating the expected number of each phenotype Part A - Calculating the expected number of each phenotype
Faith Ringgold, Tar Beach, Part I of the series Woman on a Bridge. Faith Ringgold, Tar Beach, Part I of the series Woman on a Bridge.
How to find the derivatives of trigonometric functions using the chain rule (Part 2) How to find the derivatives of trigonometric functions using the chain rule (Part 2)
How to use the laws of exponents to simplify an expression (Part 1) How to use the laws of exponents to simplify an expression (Part 1)
Video: Semidiscontinuous DNA replication

For a complete list of videos, visit our video library