Solarsystem
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The document summarizes key facts about the solar system, Earth's motions, the relationship between the Earth, moon and sun, eclipses, ocean waves and tides. It notes that the sun contains 99.86% of the mass in the solar system. It also explains that Earth's rotation causes day and night and its axial tilt causes the seasons. The moon rotates and revolves at the same rate of 27.3 days, keeping the same side facing Earth. Eclipses occur when the Earth or moon block sunlight from each other. Tides are caused by the gravitational forces of the moon and sun and change in height between spring and neap tides depending on their positions.
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Seasons phases eclipses and tides
- Earth rotates on its axis once every 24 hours, causing day and night. It revolves around the sun once every year (its orbit).
- The tilt of the Earth on its axis causes the seasons. Summer occurs when the location is tilted toward the sun, and winter occurs when it is tilted away.
- The moon orbits the Earth, causing phases like the waxing and waning crescent, gibbous, full and quarter moons. Eclipses occur when the moon passes between the Earth and sun (solar eclipse) or Earth passes between moon and sun (lunar eclipse).
The moon and tides
The document discusses various lunar phenomena such as micro moons, blue moons, blood moons, eclipses, and tides. A micro moon occurs when the full moon coincides with the moon's farthest point from Earth. There are three types of lunar eclipses defined as penumbral, partial, and total. Eclipses happen when the sun, moon, and Earth are aligned. Tides are influenced by the gravitational pull of the moon and sun, and there are two types of tides called spring tides and neap tides.
Eclipses And Tides
The document discusses different types of eclipses including solar and lunar eclipses. A solar eclipse occurs when the moon passes between the earth and sun, blocking the sun from view. A lunar eclipse occurs when the earth passes between the sun and moon, casting the moon in earth's shadow. The document provides details on the different types of solar and lunar eclipses as well as explanations for why eclipses do not occur every month and why the moon appears red during a lunar eclipse.
The Moon and Tides - Spring vs. Neap Tides
Spring tides occur during new and full moons when the sun and moon are aligned, causing their tidal bulges to constructively interfere and produce the largest difference between high and low tides. Neap tides happen at quarter moons when the sun and moon are at right angles, causing their tidal bulges to destructively interfere and result in a smaller tidal range. The tidal range is greatest when the moon is closest to Earth at perigee and Earth is closest to the sun at perihelion.
6 -earth_s_motions
Earth rotates on its axis over 24 hours, causing day and night. It also revolves around the Sun over 365 days, causing seasons. The tilt of Earth's axis remains the same, directing more solar radiation at the Northern hemisphere in summer and Southern hemisphere in winter. The seasons are caused by the combined effects of Earth's elliptical revolution, tilt, and rotation on its axis.
Eclipses
The document discusses eclipses and lunar phases. It begins by providing background information on the moon's orbit and how it reflects sunlight before explaining the different lunar phases. It then describes the causes of lunar phases and provides diagrams. The document also discusses the different types of solar and lunar eclipses, providing examples and upcoming dates. It concludes by briefly explaining the causes of ocean tides due to the moon and sun's gravity.
Satuito. Earth's Motion2
The document discusses the rotation and revolution of the Earth and Moon. It explains that the Earth rotates on its axis from west to east over the course of 24 hours, causing day and night. It revolves around the Sun in an elliptical orbit, completing one revolution every 365 days. The tilt of the Earth's axis relative to its orbit around the Sun causes the seasons. Similarly, the Moon revolves around the Earth, completing one revolution every 27 days while rotating on its axis at the same rate, which causes the lunar phases we see from Earth.
Earth - Sun - Moon Relationships: Annual Motions/Seasons
1) The seasons are caused by the tilt of the Earth's axis of rotation as it revolves around the sun, not by variations in distance from the sun.
2) As the Earth revolves around the sun, different parts of the planet are tilted either toward or away from the sun, receiving different amounts of sunlight and experiencing different seasons.
3) The tilt of the Earth's axis remains fixed at 23.5 degrees, causing the northern hemisphere to be tilted toward the sun during northern hemisphere summer and away from the sun during winter.
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Seasons phases eclipses and tides
- Earth rotates on its axis once every 24 hours, causing day and night. It revolves around the sun once every year (its orbit).
- The tilt of the Earth on its axis causes the seasons. Summer occurs when the location is tilted toward the sun, and winter occurs when it is tilted away.
- The moon orbits the Earth, causing phases like the waxing and waning crescent, gibbous, full and quarter moons. Eclipses occur when the moon passes between the Earth and sun (solar eclipse) or Earth passes between moon and sun (lunar eclipse).
The moon and tides
The document discusses various lunar phenomena such as micro moons, blue moons, blood moons, eclipses, and tides. A micro moon occurs when the full moon coincides with the moon's farthest point from Earth. There are three types of lunar eclipses defined as penumbral, partial, and total. Eclipses happen when the sun, moon, and Earth are aligned. Tides are influenced by the gravitational pull of the moon and sun, and there are two types of tides called spring tides and neap tides.
Eclipses And Tides
The document discusses different types of eclipses including solar and lunar eclipses. A solar eclipse occurs when the moon passes between the earth and sun, blocking the sun from view. A lunar eclipse occurs when the earth passes between the sun and moon, casting the moon in earth's shadow. The document provides details on the different types of solar and lunar eclipses as well as explanations for why eclipses do not occur every month and why the moon appears red during a lunar eclipse.
The Moon and Tides - Spring vs. Neap Tides
Spring tides occur during new and full moons when the sun and moon are aligned, causing their tidal bulges to constructively interfere and produce the largest difference between high and low tides. Neap tides happen at quarter moons when the sun and moon are at right angles, causing their tidal bulges to destructively interfere and result in a smaller tidal range. The tidal range is greatest when the moon is closest to Earth at perigee and Earth is closest to the sun at perihelion.
6 -earth_s_motions
Earth rotates on its axis over 24 hours, causing day and night. It also revolves around the Sun over 365 days, causing seasons. The tilt of Earth's axis remains the same, directing more solar radiation at the Northern hemisphere in summer and Southern hemisphere in winter. The seasons are caused by the combined effects of Earth's elliptical revolution, tilt, and rotation on its axis.
Eclipses
The document discusses eclipses and lunar phases. It begins by providing background information on the moon's orbit and how it reflects sunlight before explaining the different lunar phases. It then describes the causes of lunar phases and provides diagrams. The document also discusses the different types of solar and lunar eclipses, providing examples and upcoming dates. It concludes by briefly explaining the causes of ocean tides due to the moon and sun's gravity.
Satuito. Earth's Motion2
The document discusses the rotation and revolution of the Earth and Moon. It explains that the Earth rotates on its axis from west to east over the course of 24 hours, causing day and night. It revolves around the Sun in an elliptical orbit, completing one revolution every 365 days. The tilt of the Earth's axis relative to its orbit around the Sun causes the seasons. Similarly, the Moon revolves around the Earth, completing one revolution every 27 days while rotating on its axis at the same rate, which causes the lunar phases we see from Earth.
Earth - Sun - Moon Relationships: Annual Motions/Seasons
1) The seasons are caused by the tilt of the Earth's axis of rotation as it revolves around the sun, not by variations in distance from the sun.
2) As the Earth revolves around the sun, different parts of the planet are tilted either toward or away from the sun, receiving different amounts of sunlight and experiencing different seasons.
3) The tilt of the Earth's axis remains fixed at 23.5 degrees, causing the northern hemisphere to be tilted toward the sun during northern hemisphere summer and away from the sun during winter.
Astronomy lunar phases eclipses and tides
The phases of the moon are caused by the changing positions of the sun, Earth, and moon relative to one another. A new moon occurs when the moon is between the Earth and sun so its night side faces Earth. A full moon happens when the moon is on the opposite side of Earth from the sun, so its full day side faces Earth. Eclipses occur when the sun, Earth, and moon align so that one passes in front of the other, casting a shadow. Lunar eclipses happen during a full moon when Earth blocks the sun's light from reaching the moon. Solar eclipses occur during a new moon when the moon passes between the sun and Earth, casting its shadow on Earth. The moon
Day and night
The document discusses day and night on Earth and the causes of seasons. It explains that the Earth's rotation on its axis causes day and night, with the side facing the sun experiencing day and the other side experiencing night. It also notes that the Earth is tilted on its axis and revolves around the sun, and that this tilt is what causes the seasons by changing how much sunlight different parts of the Earth receive throughout the year.
rotation and revolution
The document discusses different types of rotational and orbital motions of objects in space, including the Earth. It explains that the Earth's rotation on its axis causes day and night, while its revolution around the sun over the course of a year leads to seasonal variations due to changes in the sun's angle and day length. Examples of rotation are a top spinning on its axis or the Earth each day, while examples of revolution are the Earth orbiting the sun each year or the moon revolving around the Earth.
What causes seasons on earth
The document summarizes what causes seasons on Earth. It explains that seasons result from the tilt of Earth's axis relative to its orbit around the sun. This causes variations in the intensity of sunlight and day length throughout the year. Specifically, summer occurs in the Northern Hemisphere when it is tilted toward the sun, and winter occurs when it is tilted away. Spring and fall seasons experience nearly equal amounts of daylight and nighttime.
Rotation and revolution
The document discusses the rotation and revolution of the Earth. It explains that rotation is the spinning of the Earth on its axis, which causes day and night, while revolution is the movement of the Earth around the Sun in its elliptical orbit, which causes seasons and takes 365 days to complete. Both rotation and revolution are important for sustaining life on Earth by regulating heat distribution and causing environmental changes.
2 1.1 earth's rotation & revolution
The document describes Earth's rotation and revolution around the sun and how it causes the seasons. It states that Earth rotates on its axis over 24 hours, creating day and night, and revolves around the sun over 365 days, creating years. It also explains that Earth is tilted on its axis by 23.5 degrees and that the seasons occur due to whether the northern or southern hemispheres receive more direct sunlight from the sun throughout the year as Earth revolves.
Tides
Tides are caused by the gravitational attraction of the moon and sun on the oceans as well as the centrifugal force from the Earth's rotation. High tides occur where the moon is overhead, while low tides happen 90 degrees away, and both the moon and sun's gravitational pulls contribute to the regular rising and falling of sea levels, though the moon has a greater effect being closer to Earth.
Tides notes ppt
The document discusses how the moon's gravitational pull causes Earth's tides. It explains that the moon, being closer to Earth than the sun, has a stronger tidal influence. The moon's gravity causes the oceans to bulge on both the near and far sides of Earth, resulting in two high tides per day. It also describes spring tides with extra high and low tides during new and full moons, and neap tides with less pronounced tides during half moons due to the sun partially offsetting the moon's gravitational pull.
Earth, sun and moon Interactions
The document discusses how Earth's interactions with the sun and moon cause night and day, seasons, and climate patterns. It explains that Earth's rotation on its axis causes day and night, while its revolution around the sun over the course of a year determines the seasons. The tilt of Earth's axis and latitude affect how direct sunlight hits different areas of the planet, making the equator warmer and poles colder. Seasons occur because the amount of direct sunlight varies throughout the year in different hemispheres.
Tides
The document discusses why tides occur on both sides of the Earth, not just the side facing the Moon. During a new moon, the combined gravitational pull of the Moon and Sun causes the Earth to be slightly "squashed" with a bulge facing each celestial body. The far side of the Earth experiences less gravitational pull from the Moon compared to the close side, allowing a bulge to form there as well. The gravity also pulls the Earth and Moon closer together, shifting the center of rotation towards the Sun during a new moon.
Astronomy- Motion, eclipses, tides, moon
The document discusses planetary motion, eclipses, tides, and phases of the moon. It explains that planets orbit stars in ellipses rather than perfect circles, and that closer planets move faster due to gravity. It describes solar and lunar eclipses, noting that solar eclipses occur when the moon passes between Earth and the sun, while lunar eclipses occur when Earth passes between the sun and moon. It also discusses how the moon's gravity causes ocean tides, with high tide occurring when the moon is overhead or opposite the tide location. Finally, it outlines the phases of the moon as it revolves around Earth.
Seasons summer talk
The tilt of the Earth's axis of rotation relative to its orbit around the Sun causes the seasons, as different hemispheres receive more or less direct sunlight and daylight throughout the year. Warmer seasons occur when a hemisphere is tilted toward the Sun and cooler seasons when it is tilted away. The Earth's elliptical orbit also means it is closest to the Sun in January and farthest in July, but this small variation does not significantly impact seasonal changes.
1 hrly gs ch 02 earth movement
Earth rotates on its axis once every 24 hours, causing day and night. It also revolves around the sun once every 365.25 days, causing seasons. Earth's axis is tilted at an angle of 66.5 degrees, which causes the length of days and nights to vary throughout the year and creates different seasons in each hemisphere simultaneously. The moon's gravitational pull causes high and low ocean tides daily as well as solar and lunar eclipses periodically as the moon passes between the earth and sun or earth passes between the moon and sun.
Earth's Rotation
The document discusses several key facts about Earth's rotation:
- Earth spins on an imaginary axis, completing one rotation every 24 hours at a speed of over 1,000 mph.
- Earth's rotation causes day and night and influences the number and placement of time zones around the world.
- Earth bulges slightly at the equator due to the centrifugal force of its rotation.
- Earth's tilted axis and yearly orbit around the sun influence the seasons and amount of sunlight different areas receive through the year.
2 - 3 ocean tides - low & high
Gravity plays a key role in many natural phenomena. It holds planets, stars, and galaxies together through gravitational attraction. On Earth, gravity causes ocean tides as the gravitational pull of the Moon and Sun attract the oceans. This creates two high tides each day as the Moon and Sun's positions change. The highest tides occur during a full moon or new moon when the Moon, Earth, and Sun are aligned, magnifying their gravitational effects in what are called spring tides.
Lesson 5 Motions of the Earth
Rotation and Revolution of the Earth
Aphelion and Perihelion
Four Seasons
Seasonal Changes
Solstice and Equinoxes
Standard Time Zones
Land of the Midnight Sun
Rotation and revolution
The Earth rotates on its axis from West to East, causing day and night. It also revolves around the Sun, causing seasons. The Equator divides the Earth into the Northern and Southern Hemispheres. Rotation and revolution are responsible for different weather patterns and climates in different places over time. Sea breezes occur during the day as warmer air rises over heated land, drawing in cooler air from the sea.
Rotation revolution 4
The document discusses rotation, revolution, and their effects. Rotation is an object spinning on its axis, while revolution is an object spinning around another object. The Earth's rotation causes night and day as parts of the Earth face toward and away from the Sun. The Earth's revolution and the changing angle and length of sunlight cause the seasons, with longer days and direct sun rays in summer and shorter days and indirect rays in winter. We can observe the Earth's rotation through star trails, pendulum swings, and ocean and wind currents.
Earth, Sun, Moon Rotation Flipbook
The moon orbits the Earth in a nearly perfect circle over the course of approximately 27 days, with the same side always facing the Earth. The Earth rotates on its axis over the course of 24 hours, causing the cycle of day and night, and revolves around the sun over the course of 365 days, causing the seasons. Additionally, the sun rotates on its axis once every 27 days.
Sun, earth & moon gr 3
The document discusses the Sun, Earth, and Moon. The Sun is a big ball of gases that is the source of all energy. It takes 8.4 minutes for light from the Sun to reach Earth. The Earth orbits the Sun and is the only planet that supports life. The Moon orbits the Earth and reflects light from the Sun, taking 28 days to revolve around the Earth. Day and night on Earth occur due to its rotation, while the year occurs due to its revolution around the Sun.
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The phases of the moon are caused by the changing positions of the sun, Earth, and moon relative to one another. A new moon occurs when the moon is between the Earth and sun so its night side faces Earth. A full moon happens when the moon is on the opposite side of Earth from the sun, so its full day side faces Earth. Eclipses occur when the sun, Earth, and moon align so that one passes in front of the other, casting a shadow. Lunar eclipses happen during a full moon when Earth blocks the sun's light from reaching the moon. Solar eclipses occur during a new moon when the moon passes between the sun and Earth, casting its shadow on Earth. The moon
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The document discusses different types of rotational and orbital motions of objects in space, including the Earth. It explains that the Earth's rotation on its axis causes day and night, while its revolution around the sun over the course of a year leads to seasonal variations due to changes in the sun's angle and day length. Examples of rotation are a top spinning on its axis or the Earth each day, while examples of revolution are the Earth orbiting the sun each year or the moon revolving around the Earth.
What causes seasons on earth
The document summarizes what causes seasons on Earth. It explains that seasons result from the tilt of Earth's axis relative to its orbit around the sun. This causes variations in the intensity of sunlight and day length throughout the year. Specifically, summer occurs in the Northern Hemisphere when it is tilted toward the sun, and winter occurs when it is tilted away. Spring and fall seasons experience nearly equal amounts of daylight and nighttime.
Rotation and revolution
The document discusses the rotation and revolution of the Earth. It explains that rotation is the spinning of the Earth on its axis, which causes day and night, while revolution is the movement of the Earth around the Sun in its elliptical orbit, which causes seasons and takes 365 days to complete. Both rotation and revolution are important for sustaining life on Earth by regulating heat distribution and causing environmental changes.
2 1.1 earth's rotation & revolution
The document describes Earth's rotation and revolution around the sun and how it causes the seasons. It states that Earth rotates on its axis over 24 hours, creating day and night, and revolves around the sun over 365 days, creating years. It also explains that Earth is tilted on its axis by 23.5 degrees and that the seasons occur due to whether the northern or southern hemispheres receive more direct sunlight from the sun throughout the year as Earth revolves.
Tides
Tides are caused by the gravitational attraction of the moon and sun on the oceans as well as the centrifugal force from the Earth's rotation. High tides occur where the moon is overhead, while low tides happen 90 degrees away, and both the moon and sun's gravitational pulls contribute to the regular rising and falling of sea levels, though the moon has a greater effect being closer to Earth.
Tides notes ppt
The document discusses how the moon's gravitational pull causes Earth's tides. It explains that the moon, being closer to Earth than the sun, has a stronger tidal influence. The moon's gravity causes the oceans to bulge on both the near and far sides of Earth, resulting in two high tides per day. It also describes spring tides with extra high and low tides during new and full moons, and neap tides with less pronounced tides during half moons due to the sun partially offsetting the moon's gravitational pull.
Earth, sun and moon Interactions
The document discusses how Earth's interactions with the sun and moon cause night and day, seasons, and climate patterns. It explains that Earth's rotation on its axis causes day and night, while its revolution around the sun over the course of a year determines the seasons. The tilt of Earth's axis and latitude affect how direct sunlight hits different areas of the planet, making the equator warmer and poles colder. Seasons occur because the amount of direct sunlight varies throughout the year in different hemispheres.
Tides
The document discusses why tides occur on both sides of the Earth, not just the side facing the Moon. During a new moon, the combined gravitational pull of the Moon and Sun causes the Earth to be slightly "squashed" with a bulge facing each celestial body. The far side of the Earth experiences less gravitational pull from the Moon compared to the close side, allowing a bulge to form there as well. The gravity also pulls the Earth and Moon closer together, shifting the center of rotation towards the Sun during a new moon.
Astronomy- Motion, eclipses, tides, moon
The document discusses planetary motion, eclipses, tides, and phases of the moon. It explains that planets orbit stars in ellipses rather than perfect circles, and that closer planets move faster due to gravity. It describes solar and lunar eclipses, noting that solar eclipses occur when the moon passes between Earth and the sun, while lunar eclipses occur when Earth passes between the sun and moon. It also discusses how the moon's gravity causes ocean tides, with high tide occurring when the moon is overhead or opposite the tide location. Finally, it outlines the phases of the moon as it revolves around Earth.
Seasons summer talk
The tilt of the Earth's axis of rotation relative to its orbit around the Sun causes the seasons, as different hemispheres receive more or less direct sunlight and daylight throughout the year. Warmer seasons occur when a hemisphere is tilted toward the Sun and cooler seasons when it is tilted away. The Earth's elliptical orbit also means it is closest to the Sun in January and farthest in July, but this small variation does not significantly impact seasonal changes.
1 hrly gs ch 02 earth movement
Earth rotates on its axis once every 24 hours, causing day and night. It also revolves around the sun once every 365.25 days, causing seasons. Earth's axis is tilted at an angle of 66.5 degrees, which causes the length of days and nights to vary throughout the year and creates different seasons in each hemisphere simultaneously. The moon's gravitational pull causes high and low ocean tides daily as well as solar and lunar eclipses periodically as the moon passes between the earth and sun or earth passes between the moon and sun.
Earth's Rotation
The document discusses several key facts about Earth's rotation:
- Earth spins on an imaginary axis, completing one rotation every 24 hours at a speed of over 1,000 mph.
- Earth's rotation causes day and night and influences the number and placement of time zones around the world.
- Earth bulges slightly at the equator due to the centrifugal force of its rotation.
- Earth's tilted axis and yearly orbit around the sun influence the seasons and amount of sunlight different areas receive through the year.
2 - 3 ocean tides - low & high
Gravity plays a key role in many natural phenomena. It holds planets, stars, and galaxies together through gravitational attraction. On Earth, gravity causes ocean tides as the gravitational pull of the Moon and Sun attract the oceans. This creates two high tides each day as the Moon and Sun's positions change. The highest tides occur during a full moon or new moon when the Moon, Earth, and Sun are aligned, magnifying their gravitational effects in what are called spring tides.
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Rotation revolution 4
The document discusses rotation, revolution, and their effects. Rotation is an object spinning on its axis, while revolution is an object spinning around another object. The Earth's rotation causes night and day as parts of the Earth face toward and away from the Sun. The Earth's revolution and the changing angle and length of sunlight cause the seasons, with longer days and direct sun rays in summer and shorter days and indirect rays in winter. We can observe the Earth's rotation through star trails, pendulum swings, and ocean and wind currents.
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The moon orbits the Earth in a nearly perfect circle over the course of approximately 27 days, with the same side always facing the Earth. The Earth rotates on its axis over the course of 24 hours, causing the cycle of day and night, and revolves around the sun over the course of 365 days, causing the seasons. Additionally, the sun rotates on its axis once every 27 days.
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The document discusses the Sun, Earth, and Moon. The Sun is a big ball of gases that is the source of all energy. It takes 8.4 minutes for light from the Sun to reach Earth. The Earth orbits the Sun and is the only planet that supports life. The Moon orbits the Earth and reflects light from the Sun, taking 28 days to revolve around the Earth. Day and night on Earth occur due to its rotation, while the year occurs due to its revolution around the Sun.
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The document discusses the rotation and revolution of Earth and the Moon. It explains that Earth rotates on its axis every 24 hours, causing day and night. It revolves around the Sun in an elliptical orbit over the course of a year. The Moon revolves around Earth, causing the phases of the Moon as it reflects sunlight. The positions of Earth, Moon, and Sun cause solar and lunar eclipses periodically.
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This document discusses the relationships between the Earth, Sun, and Moon, and how they affect day and night, years, and seasons. It explains that the Earth's rotation on its axis causes day and night, with a full rotation taking 24 hours. It also explains that the Earth revolves around the Sun over the course of 365 days, which divides the year into four seasons due to the tilt of the Earth's axis. Finally, it discusses how the Moon revolves around the Earth over 29 days, and how the changing positions of the Sun, Earth, and Moon cause the Moon's phases.
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The document summarizes key facts about Earth:
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- With a diameter of around 8,000 miles, Earth is the fifth largest planet in the solar system and has one moon. The presence of water covering over 70% of the surface allows life to thrive.
- Earth rotates on its axis once every 24 hours and revolves around the sun once every 365 days, causing seasons and influencing climate.
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The document discusses key characteristics and features of Earth's moon. It describes how the moon rotates on its axis once every 29.5 days and revolves around Earth, also taking 29.5 days. This locked rotation is why we always see the same face of the moon. The changing positions of the moon and sun relative to Earth cause the phases of the moon and create high and low tides. Eclipses occur when the moon or Earth block the sun's light. Craters and flat dark areas called maria are visible features on the moon's surface.
Earth's moon
The moon rotates on its axis once every 29.5 days and revolves around Earth once every 29.5 days, keeping the same face pointed towards Earth. The changing positions of the moon relative to Earth and the sun cause the phases of the moon and tides on Earth. Features on the moon's surface include craters and flat dark areas called maria, which are large basins filled with hardened lava.
Moon Characteristics and Motion
The moon is tidally locked to Earth, meaning the same side always faces Earth. This is why there is a big difference between the appearance of the near side, which faces Earth, and the far side. The near side has many visible maria (dark plains) while the far side has fewer maria and a thicker crust with more craters. Additionally, the Earth and moon orbit a common center of gravity called the barycenter, located about 900 miles from Earth's surface. Both bodies revolve around this point, which itself revolves around the sun.
12.1 earth, moon, sun
Early civilizations closely observed the sky and used celestial movements to track time and guide activities. It was later discovered that the Earth revolves around the Sun, while the Moon revolves around Earth. The Moon was formed from debris ejected after a giant impact between Earth and another planet. Its phases and gravitational pull are responsible for ocean tides and it has no atmosphere or erosion, leaving ancient craters visible.
Moon
The moon formed approximately 95 million years after the formation of the solar system from a large collision that tore material away from the molten early Earth. It has a small core and rocky mantle made up of dense rocks rich in oxygen, silicon, magnesium, and iron. The moon has a very thin atmosphere and experiences large temperature variations between its day and night sides. The moon's gravity causes Earth's tides and is slowly increasing the length of an Earth day. Eclipses occur when the moon or Earth block the sun from the other's view. Unlike Earth, the moon does not have seasons due to its minimal axial tilt.
Annual Motions - Reasons for Seasons
1) The seasons are caused by the 23.5 degree tilt of the Earth's axis as it orbits the sun, not by the Earth's varying distance from the sun.
2) When the northern hemisphere is tilted toward the sun, it experiences summer, and when tilted away, it experiences winter.
3) The summer and winter solstices and vernal and autumnal equinoxes mark the changing seasons as the Earth revolves around the sun.
Earth and Space
The document summarizes key concepts about the solar system, including:
- The solar system is made up of the sun and eight planets that orbit around it, along with moons, asteroids, and comets.
- The earth spins on its axis, causing day and night, and its tilt and orbit around the sun cause the seasons in the northern and southern hemispheres.
- Nuclear fusion in the sun's core converts hydrogen to helium, releasing enormous amounts of energy that allow it to shine.
The Earth And The Moon
The document discusses the formation and evolution of Earth and its relationship with the Moon. It provides details on:
1) How Earth formed over 4.6 billion years ago from molten material that differentiated, with radioactive dating showing the oldest rocks are 3.9 billion years old.
2) The structure of Earth including its iron-nickel core and differentiation over time.
3) The influence the Moon has on Earth through tidal forces, which are slowing Earth's rotation over time and allowing the Moon to recede further.
Astronomy unit 2011 SUN EARTH MOON SYSTEM acloutier copyright
The document provides an overview of concepts in astronomy including:
1) It describes Earth's rotation, the moon's effect on Earth, and how this impacts seasons and timekeeping.
2) It explains how the tilt of the Earth's axis and its orbit around the sun cause the seasons and equinoxes and solstices.
3) It discusses technology that has expanded our ability to observe space like telescopes, interferometry, and photography.
Our universe
The document discusses our solar system and the motions of Earth, the moon, and the sun. It notes that the Milky Way galaxy contains our solar system and sun. It then lists the planets in our solar system from Mercury to Pluto. It proceeds to describe the moon's nearly circular orbit around Earth, which takes about 27 days, and causes the same side of the moon to always face Earth. It also explains that Earth rotates on its axis over 24 hours, causing day and night, and revolves around the sun over 365 days, causing the seasons. Additionally, it shares that the sun rotates on its axis once every 27 days.
Sun, Earth, Moon System
This document discusses the relationships between planets, moons, and other celestial bodies. It explains that the Moon orbits the Earth and is considered our natural satellite. A satellite revolves around a planet. Lunar eclipses occur when the Moon passes behind Earth into its shadow, while solar eclipses happen when the Moon passes between Earth and the Sun. The Moon's phases are caused by varying amounts of sunlight reflecting off its surface due to its orbit around Earth. Tides are also influenced by the Moon's gravity, with high and low tides occurring regularly due to the positions of the Moon and Sun relative to Earth.
Earth moon sun
The document discusses relationships between Earth, the Moon, and the Sun. It explains that rotation is the turning of a body on its axis, such as Earth rotating daily, while revolution is the motion of one body around another, such as Earth revolving around the Sun yearly. It also defines insolation as the amount of solar radiation reaching Earth and describes how the tilt of Earth's axis and its revolution cause seasons by changing the Sun's angle of incidence across the globe throughout the year.
Astronomy review
The document provides an overview of key astronomy concepts including the astronomical unit, light year, scale, our solar system, planets, stars, gravity, orbits, axes, seasons, eclipses, tides, constellations, clusters, galaxies, and the universe. Key terms are defined and examples are given for many concepts to help explain astronomical distances and movements.
Ch 23
The document summarizes key properties and motions of Earth and the Moon. It describes how Earth rotates on its axis, causing day and night, and revolves around the Sun, causing years. It also explains that the Moon rotates on its axis and revolves around Earth, and that the changing angles of sunlight cause its phases to cycle over 29.5 days.
Similar to Solarsystem (20)
Astronomy unit 2011 SUN EARTH MOON SYSTEM acloutier copyright
Astronomy unit 2011 SUN EARTH MOON SYSTEM acloutier copyright
Solarsystem
- 1. SOLAR SYSTEM • 9 Planets – or 8????? • 99.86% mass of the SS is the sun • Due to the gravitational pull, the sun is the central object
- 2. Gravity’s Influence on Orbits
- 3. EARTH’S MOTIONS • Rotation – Earth rotates on it’s axis (23.5 degree tilt) • This causes day and night – 24 hours
- 5. Tilt of the Earth
- 11. Solar Eclipse
- 13. Lunar Eclipse
- 19. Earth–Moon–Sun Positions and the Tides