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Roughly speaking, a day is one rotation of the Earth. To be precise, one rotation, using the Sun (rather than the general background, like stars, etc.) as a reference point.
Astronomers call this the "solar day".This day lengthvaries a little so we use the "mean solar day" of exactly 24 hours. "Mean" is another way of saying "average".
(The rotation period is called the "sidereal day".)
What else can I help you with?
The length of an Earth day is determined by the time required for approximately one?
The length of an Earth day is determined by the time required for approximately one full rotation of the Earth on its axis. It takes approximately 24 hours for the Earth to complete one rotation, resulting in a day-night cycle. This rotation period is the basis for our concept of a day.
How are day and night determined?
Day and night are determined by the rotation of the Earth on its axis. When a particular part of the Earth is facing towards the Sun, it experiences daylight, while the opposite side experiences nighttime. This cycle of day and night occurs approximately every 24 hours.
When do you have day and night?
Day and night are determined by the rotation of the Earth on its axis. Day occurs when a specific location on Earth is facing the sun, experiencing daylight. Night happens when that location is facing away from the sun, experiencing darkness.
What is the Earth and tides are determined by the moon and pull.?
Earth's tides are determined by the moon's ________________ pull.
Why earth rotates from east to west not north to south?
Because modern science has determined that MASS is responsible for gravity.
Why does the earth move to cause day and night?
There is no deep philosophical reason, the spin of the earth is determined by the sum of the velocities of the original mass that formed Earth. The other planets, and the Sun, have different rotational periods.
How are solstices determined?
The solstices are determined by the distance the Earth is from the sun in its orbit. Winter is when the sun is farthest away relative to the Earth's tilt. Summer occurs when the opposite is true.
Arab Astronomers determined that the earth was what?
Arab astronomers determined that the Earth was round in shape through a combination of observations and mathematical calculations. They also accurately calculated the Earth's circumference to an impressive degree of accuracy for their time.
What is true about the length of a planets day?
The days on Earth are determined by our rotational period. On other planets the rotatinal speed is different, and other factors can make the "solar day" (sunrise to sunrise) very different.Rotational periods (for the core if a gas giant):Mercury: 58.646225 Earth daysVenus: 243.0187 Earth daysEarth: 0.99726968 Earth daysMars: 1.02595675 Earth daysJupiter: 0.41354 Earth daysSaturn: 0.44401 Earth daysUranus: 0.71833 Earth daysNeptune: 0.67125 Earth daysThese are the rotation periods or "sidereal days", given in Earth "solar days" (of 24 hours)---Calculating the solar day lengthThe length of a planet's "day" is normally determined by its rotational speed, which varies and is fastest on the larger planets. For two inner planets, the rotation is so slow that the "solar day" (sunrise to sunrise) is determined primary by their revolution around the Sun. For Uranus, its tilt means that the day or night is determined by its 84 Earth year orbit around the Sun.Mercury: solar day is 176 Earth daysrotates once every 58.6 Earth days - (day is twice the length of its year)Venus : solar day is 116.75 Earth daysrotates once every 243 Earth days, east to west - (its year is 224 Earth days).Earth: solar day is 24 hoursrotates once every 23.93 hours (Earth rotates 366.25 times a year)Mars : solar day is 24.6 Earth hoursrotates once every 24.66 Earth hours (the much longer year means the number of rotations roughly equals the number of days)Jupiter : solar day is 9.925 Earth hoursrotates once 9.925 earth hours -(the atmosphere in the equatorial regions takes only 9.84 hours to rotate - it is a gas planet and the clouds are not attached to the core below)Saturn :solar day is 10.65 Earth hoursrotates once every 10.65 Earth hours - clouds in equatorial regions take only 10.23 hours to rotate)Uranus : solar day is 42 Earth yearsrotates once every 17.24 Earth hours - (the planet is tipped on its side - each pole spends 42 Earth years in sunlight or darkness)Neptune : solar day is 12 to 18 Earth hoursrotates once every 16.1 hours (the gases of Neptune's atmosphere rotate fastest at the poles: 1.5 times faster than at the equator)
When is the Earth closest to to sun day or night?
The Earth's distance from the sun does not have a direct impact on day or night. Day and night are primarily determined by the rotation of the Earth on its axis. The Earth's closest point to the sun, called perihelion, occurs in early January when the Northern Hemisphere experiences winter.
How long are the days?
The days on Earth are determined by our rotational period. On other planets the rotatinal speed is different, and other factors can make the "solar day" (sunrise to sunrise) very different.Rotational periods (for the core if a gas giant):Mercury: 58.646225 Earth daysVenus: 243.0187 Earth daysEarth: 0.99726968 Earth daysMars: 1.02595675 Earth daysJupiter: 0.41354 Earth daysSaturn: 0.44401 Earth daysUranus: 0.71833 Earth daysNeptune: 0.67125 Earth daysThese are the rotation periods or "sidereal days", given in Earth "solar days" (of 24 hours)---Calculating the solar day lengthThe length of a planet's "day" is normally determined by its rotational speed, which varies and is fastest on the larger planets. For two inner planets, the rotation is so slow that the "solar day" (sunrise to sunrise) is determined primary by their revolution around the Sun. For Uranus, its tilt means that the day or night is determined by its 84 Earth year orbit around the Sun.Mercury: solar day is 176 Earth daysrotates once every 58.6 Earth days - (day is twice the length of its year)Venus : solar day is 116.75 Earth daysrotates once every 243 Earth days, east to west - (its year is 224 Earth days).Earth: solar day is 24 hoursrotates once every 23.93 hours (Earth rotates 366.25 times a year)Mars : solar day is 24.6 Earth hoursrotates once every 24.66 Earth hours (the much longer year means the number of rotations roughly equals the number of days)Jupiter : solar day is 9.925 Earth hoursrotates once 9.925 earth hours -(the atmosphere in the equatorial regions takes only 9.84 hours to rotate - it is a gas planet and the clouds are not attached to the core below)Saturn :solar day is 10.65 Earth hoursrotates once every 10.65 Earth hours - clouds in equatorial regions take only 10.23 hours to rotate)Uranus : solar day is 42 Earth yearsrotates once every 17.24 Earth hours - (the planet is tipped on its side - each pole spends 42 Earth years in sunlight or darkness)Neptune : solar day is 12 to 18 Earth hoursrotates once every 16.1 hours (the gases of Neptune's atmosphere rotate fastest at the poles: 1.5 times faster than at the equator)
How is a point on earth determined?
GPS is the easiest
