« previous next »

Author Question: Why is there a two day difference in the sidereal and synodic months? A) The Moo (Read 837 times)

Melanie

  • Full Member
  • ***
  • Posts: 204
on: Aug 28, 2013
Why is there a two day difference in the sidereal and synodic months?
A) The Moon speeds up at perigee, and slows down at apogee.
B) The sidereal day is four minutes shorter than the solar day, and it adds up.
C) The Earth is closer to the Sun during the sidereal month.
D) The Earth is also revolving around the Sun, so the Moon must "catch up".
E) The Moslem lunar year is only 354 days long, on average.


penza

  • Hero Member
  • *****
  • Posts: 1,022
Reply #1 on: Aug 28, 2013
Oh! I know the answer is C.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Flower part number is a characteristic difference between monocots and eudicots (a) Flowers and buds Flower part number is a characteristic difference between monocots and eudicots (a) Flowers and buds
A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ... A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ...
A difference in oxygen content between the atmosphere and the exhaust gases enables an O2S to ... A difference in oxygen content between the atmosphere and the exhaust gases enables an O2S to ...
Difference-Between-Carbohydrates-and-Lipids-infographic Difference-Between-Carbohydrates-and-Lipids-infographic
Resting Membrane Potential: Voltage Difference Resting Membrane Potential: Voltage Difference
At 19 months, Merr would clearly pass the 17-month item on the Bayley Scales At 19 months, Merr would clearly pass the 17-month item on the Bayley Scales
Video: Lactation and Breast Feeding

For a complete list of videos, visit our video library