Here's my question---
Precession of earth's axis causes-
a-axial tilt
b-a change in the north pole star
c-seasons
d-day and night
My answer was a- m i rite?
Precession of earth's axis caused by the centrifugal force of the Earth's rotation... =)
The cause of the precession is the equatorial bulge of the Earth, caused by the centrifugal force of the Earth's rotation.That rotation changes the Earth from a perfect sphere to a slightly flattened one, thicker across the equator. the answer is-(The attraction of the Moon and Sun on the bulge is then the "nudge" which makes the Earth precess.)your answer is wrong......
Precession means the axis of the Earth is changing, so North changes.
b) They are asking for an effect CAUSED BY precession, not the cause of precession.
To determine the correct answer to your question, let's examine the options one by one:
a) Axial tilt: The precession of Earth's axis does indeed cause a change in the axial tilt. Over a period of about 26,000 years, the tilt of Earth's axis changes slightly, resulting in shifts in the position of the polar axis relative to the celestial pole.
b) Change in the North Pole star: As a consequence of the precession mentioned above, the North Pole star also changes over time. Currently, the North Star is Polaris, but due to precession, Vega will become the North Star in about 14,000 years.
c) Seasons: While the precession of Earth's axis does have some influence on the seasons, it is not the primary cause. The tilt of Earth's axis is primarily responsible for the changing seasons as it determines how sunlight is distributed across different latitudes throughout the year.
d) Day and night: The precession of Earth's axis does not directly affect the duration of day and night. Instead, the rotation of Earth on its axis and its orbit around the Sun determine the length of day and night.
From this analysis, it is clear that option a is correct - the precession of Earth's axis causes an axial tilt. However, it is important to note that the other options might also be influenced indirectly by the precession but are not directly caused by it.
I hope this explanation helps clarify the concept of precession and its effects on Earth's axis and related phenomena.