1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Amiraneli [1.4K]
3 years ago
10

Why is a sidereal day shorter than a solar day on earth?

Biology
1 answer:
Nadusha1986 [10]3 years ago
6 0
The Sidereal Day is 4 minutes shorter than the Mean Solar Day, because the rotation of the Earth on its axis, and the orbiting of the Earth around the Sun, are both counterclockwise, as viewed from above (or north of) the Ecliptic Plane. See planetary retrograde motion for an example of the opposite situation.

The reason that the Solar Day varies around the Mean Solar Day is that the Earth moves at different speeds through its orbit around the Sun. This is in keeping with Kepler's Second Law of Planetary Motion.

Please note that the Mean Solar Day changes over a long period of time, due to the slowing of the rotation of the Earth due to tidal forces exerted on the Earth primarily by the Moon. For example, the Mean Solar Day was about 23 hours about 250 million years ago.
You might be interested in
Which statement about the DNA replication process in prokaryotes is true?
spayn [35]

the answer is definitly D.)

8 0
3 years ago
Read 2 more answers
Describe the procedure of water reaching the leaves from the roots of a plant
Lisa [10]
The water enters the xylem first by osmosis. Water moves from the soil to the root hair cell down a water potential gradient, and to the root cortex cell from a higher water potential to a lower water potential, this process will be repeated until water enters xylem. Because transpiration is occurring in the leaf, water is lost so there is a lower water potential inside the leaf. Osmosis moves water from the xylem to the leaf because the xylem has a higher water potential. Water moves from the xylem to the cells of the leaf. This pulls water up the xylem via cohesion which is the process of water molecules attracting each other and sticking together. Water does not fall down the xylem as here is adhesion which is the process of water molecules sticking to the inside of the xylem.
8 0
2 years ago
GIVING 20 POINTS PLEASE HELP ME ASAP!!!!!
igor_vitrenko [27]

Answer:

The Answer is gonna be D. There are fewer winds in summer to interfere with drying up puddles

4 0
2 years ago
Read 2 more answers
The data obtained from the meselson–stahl experiment after one generation of replication eliminated the dispersive model of dna
Sedaia [141]
<h2>Given statement is false</h2>

Explanation:

According to dispersive model of DNA replication,DNA molecules are hybrids of parental and daughter DNA;In this model each individual strand is a combination of original and new DNA

Meselson and Stahl did an experiment on DNA replication using E.coli bacteria

  • E.coli was grown in a medium containing heavy isotope of nitrogen,bacteria took up the nitrogen and used to synthesize new biological molecules,including DNA
  • It was grown for many generations,the nitrogenous bases of the bacteria's DNA were all labelled with heavy nitrogen
  • Bacteria were then switched to light nitrogen isotope and allowed to grow for several generations
  • They then measured the density of the DNA using density gradient centrifugation
  • This method separates molecules such as DNA into bands by spinning them at high speeds in the presence of another molecule, such as cesium chloride
  • Each DNA produced two DNA molecules each with one new strand and one old strand called semi conservative replication(half of the parental DNA conserved in daughter DNA)
  • Each DNA strand act as a template for synthesis of new strand
  • Hence,dispersive model of DNA was eliminated and semi-conservative model of DNA replication was proved by the above experiment

3 0
3 years ago
Read 2 more answers
Concerns over a global dependence on fossil fuels include environmental, economic, and social consequences. Please select the be
vesna_86 [32]
Concerns over a global dependence on fossil fuels include environmental, economic, and social consequences. 
the answer is True
3 0
2 years ago
Read 2 more answers
Other questions:
  • When a region of dna must be repaired by removing and replacing some of the nucleotides, what ensures that the new nucleotides a
    5·1 answer
  • Contrast meiosis with mitosis, mentioning homologous chromosomes, chromatids, tetrads and crossing over.
    11·1 answer
  • I need help with this ASAP!!! It’s a pic of neuron and I want you to type the name for corresponding anatomical structures of th
    14·1 answer
  • Blue, brown, and green beetles from a forest migrated to a rocky mountain after a natural disaster. In the new environment, brow
    10·2 answers
  • A female is born with attached earlobes, which is a recessive phenotype. Which of the following statements about her parents mus
    14·1 answer
  • after you injure your knee in a bike accident your doctor says that you have a torn ligament. describe the injury in terms of th
    8·1 answer
  • The function of platelets is all of the following except:
    12·1 answer
  • An infectious disease is one that is caused by
    9·2 answers
  • Based on this map, which of the following countries do you think contributes
    14·1 answer
  • Which correctly distinguishes between how a pine tree and an apple tree reproduce?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!