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

Author Question: How and why would the noon Sun appear different to an observer on Mercury compared to one on Earth? ... (Read 37 times)

dakota nelson

  • Hero Member
  • *****
  • Posts: 604
on: Jul 27, 2018
How and why would the noon Sun appear different to an observer on Mercury compared to one on Earth?
 
  What will be an ideal response?

Question 2

The redshift of the galaxies is correctly interpreted as
 
  A) the differences in temperatures and star formation in old and young galaxies.
  B) a Doppler shift due to the random motions of galaxies in space.
  C) an aging of light as gravity weakens with time.
  D) space itself is expanding with time, so the photons are stretched while they travel through space.
  E) placing our Galaxy near the center of the Local Group.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Anna

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 27, 2018
Answer to Question 1

Mercury's rotation axis is almost perpendicular to its orbit. This means the angle of the Sun with the southern (or northern) horizon never changes. On Mercury, an observer at the equator would always see the noon Sun overhead, an observer at the pole would always see it on the horizon. On Earth, the altitude of the Sun changes over the year because of the 23.5 degree axial tilt.

Answer to Question 2

D


dakota nelson

  • Member
  • Posts: 604
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

nathang24

  • Member
  • Posts: 314
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth
Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry. Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry.
Mercury and Our Moon Mercury and Our Moon
El Anatsui, Between Earth and Heaven. El Anatsui, Between Earth and Heaven.
Earth Science, 14/E Earth Science, 14/E
The Last Man on Earth The Last Man on Earth
Video: Hormonal regulation of pregnancy - weeks 2 through 38

For a complete list of videos, visit our video library