ROTASI DAN REVOLUSI BUMI
Summary
TLDRThis educational video delves into Earth's rotation and revolution, explaining how they affect our daily lives. Earth's rotation, which lasts approximately 24 hours, causes day and night, time differences, and the apparent daily movement of the sun. The revolution around the sun, taking about 365.25 days, results in seasonal changes, varying day and night lengths, and the shifting appearance of constellations. The video also touches on the Earth's axial tilt and its impact on climate and the establishment of the Gregorian calendar, including leap years.
Takeaways
- đ The Earth performs two types of movements: rotation and revolution.
- đ Rotation is the spinning of the Earth on its axis from west to east, taking approximately 24 hours to complete one rotation.
- đ The rotation of the Earth results in the alternation of day and night, with the Earth divided into a sun-facing side and a side away from the sun.
- â° The Earth's rotation causes time differences across different regions, as areas facing the sun experience daylight while those on the opposite side experience night.
- đ The apparent daily motion of the sun is actually due to the Earth's rotation, not the sun moving across the sky.
- đ The Coriolis effect caused by the Earth's rotation influences the direction of ocean currents and the bending of water in the oceans.
- đ Revolution is the Earth's movement around the sun, taking approximately 365.25 days to complete one orbit.
- đĄ The tilt of the Earth's axis during its revolution results in seasonal changes, with varying lengths of day and night and different climatic conditions.
- đ The Earth's revolution and axial tilt also affect the appearance of constellations in the night sky, changing as the Earth moves eastward and westward.
- đ The Earth's revolution period of 365.25 days necessitates the addition of a leap day every four years to align with the solar year, making one year 366 days long.
Q & A
What are the two types of movements that Earth exhibits?
-Earth exhibits two types of movements: rotation and revolution.
What is the Earth's rotation and how does it affect our daily lives?
-The Earth's rotation is the spinning of the Earth on its axis from west to east, which we perceive as east to west. It takes approximately 24 hours to complete one rotation and is responsible for the cycle of day and night, time differences across the globe, the apparent daily motion of the sun, and the deflection of ocean currents.
How long does it take for the Earth to complete one rotation?
-The Earth's rotation takes approximately 23 hours, 56 minutes, which we round to 24 hours for the sake of daily life.
What causes the alternation of day and night on Earth?
-The alternation of day and night is caused by the Earth's rotation, which divides the Earth into a sun-facing side experiencing daylight and a side away from the sun experiencing nighttime.
How does the Earth's rotation lead to time differences across different regions?
-The Earth's rotation leads to time differences because regions facing the sun experience daylight and thus earlier times compared to regions that are on the opposite side of the Earth.
What is the apparent daily motion of the sun, and how is it related to the Earth's rotation?
-The apparent daily motion of the sun is the observation that the sun appears to rise in the east and set in the west. This is actually a result of the Earth's rotation, not the sun's movement.
What is the Coriolis effect mentioned in the script, and how does it relate to the Earth's rotation?
-The Coriolis effect is the deflection of ocean currents and atmospheric systems to the right in the Northern Hemisphere and to the left in the Southern Hemisphere due to the Earth's rotation.
What is the Earth's revolution, and how does it differ from its rotation?
-The Earth's revolution is the Earth's orbital motion around the Sun, which takes approximately 365.25 days to complete. It is different from rotation as it is the movement in the Earth's orbit, causing seasonal changes and variations in the length of day and night throughout the year.
How does the Earth's revolution affect the seasons and the length of day and night?
-The Earth's revolution, combined with its axial tilt of approximately 23.5 degrees, causes the changing of seasons and variations in the length of day and night. This is because different parts of the Earth receive varying amounts of sunlight throughout the year.
What is the significance of the Earth's axial tilt during its revolution?
-The Earth's axial tilt of 23.5 degrees during its revolution is significant as it causes the changing of seasons. As the Earth orbits the Sun, the tilt causes different parts of the Earth to receive varying intensities of sunlight, leading to the seasonal cycle.
Why do we have leap years, and how do they relate to the Earth's revolution?
-Leap years are necessary because the Earth's revolution takes approximately 365.25 days. To account for the extra quarter day, an additional day is added to the calendar every four years, making that year 366 days long. This day is added to February, making it 29 days.
Outlines
đ Earth's Rotation and Revolution
This paragraph introduces the concepts of Earth's rotation and revolution. It explains that Earth performs two types of motion: rotation and revolution. Rotation is the spinning of Earth on its axis from west to east, which appears counterclockwise and takes approximately 24 hours to complete. This rotation is responsible for the cycle of day and night, as different parts of the Earth face the Sun. Additionally, the rotation causes the Coriolis effect, which influences the movement of ocean currents and weather patterns. The paragraph also touches on the Earth's revolution around the Sun, which takes about 365.25 days and is responsible for the changing of the seasons and the variation in the length of day and night throughout the year.
đ Impacts of Earth's Motion on Daily Life
The second paragraph delves into the impacts of Earth's motion on various aspects of life and the environment. It discusses how the Earth's axial tilt and its revolution around the Sun lead to the changing of the seasons, particularly noticeable in the tropics with distinct dry and wet seasons. The axial tilt also causes variations in the length of day and night across different regions of the Earth. The paragraph further explains how the Earth's rotation and revolution affect the apparent movement of stars in the sky, leading to different constellations being visible at different times of the year. Lastly, it mentions the Gregorian calendar's adjustment for the extra quarter day in the Earth's revolution period by adding a leap day every four years, making the year 366 days long in a leap year.
Mindmap
Keywords
đĄRotation
đĄRevolution
đĄDay and Night
đĄTime Zones
đĄApparent Solar Motion
đĄCoriolis Effect
đĄEquinox
đĄSeasons
đĄTides
đĄLeap Year
đĄConstellations
Highlights
Earth performs two types of motion: rotation and revolution.
Rotation is the spinning of Earth on its axis from West to East.
Despite Earth's rotation, life on it does not rotate due to gravity.
Earth's rotation takes approximately 23 hours and 56 minutes.
The speed of Earth's rotation is about 1670 kilometers per hour.
Rotation causes phenomena such as day and night, and time differences.
Day and night occur due to Earth's rotation, with areas facing or turning away from the Sun.
Time differences arise because of the rotation, with regions facing the Sun experiencing day and night cycles.
The apparent daily motion of the Sun is due to Earth's rotation, not the Sun moving.
Ocean currents are deflected due to Earth's rotation, causing them to curve.
Revolution is Earth's movement around the Sun, taking about 365.25 days.
Earth's revolution is counterclockwise, and it tilts at 23.5 degrees relative to the ecliptic plane.
Revolution affects phenomena such as the apparent annual motion of the Sun, seasonal changes, and variations in day and night lengths.
Tropical regions experience only two seasons: dry and rainy, repeating annually.
The length of day and night varies between the Southern and Northern Hemispheres due to Earth's axial tilt.
The appearance of star constellations changes as Earth rotates, affecting the night sky's patterns.
The Gregorian calendar is based on Earth's revolution, with leap years occurring every four years to account for the extra quarter day.
Transcripts
Halo
[Musik]
assalamualaikum warahmatullah
wabarakatuh
sobat sumber belajar kali ini kita akan
belajar tentang rotasi dan revolusi bumi
Hai
bumi yang kita tinggali melakukan dua
gerak yakni gerak rotasi dan gerak
revolusi
gerak rotasi bumi
Hai rotasi bumi adalah perputaran bumi
pada porosnya atau sumbunya
bumi bergerak dari arah Barat ke arah
timur atau terlihat bertentangan dengan
arah jarum jam
Hai meskipun bumi mengalami peredaran
namun makhluk hidup didalamnya tidak
ikut berputar Hal ini disebabkan adanya
gravitasi bumi
Launcher rotasi bumi akan berlangsung
selama 23 jam 56 menit atau bisa kita
bulatkan menjadi 24 jam untuk sekali
putaran
bumi berotasi dengan kecepatan 1600 70
KPJ
rotasi bumi dapat mengakibatkan beberapa
kejadian yang berdampak pada kehidupan
makhluk hidup di bumi berikut dampak
yang disebabkan oleh rotasi bumi
yang pertama terjadinya siang dan malam
pergantian siang dan malam merupakan
akibat dari rotasi bumi
bumi terbagi menjadi dua bagian yakni
menghadap matahari dan membelakangi
matahari
daerah di bumi akan mengalami siang hari
ketika berada pada bagian yang menghadap
matahari
sementara itu bagian yang membelakangi
matahari akan mengalami waktu malam
Hai yang kedua perbedaan waktu di
berbagai daerah rotasi bumi juga
mengakibatkan adanya perbedaan waktu di
berbagai
daerah-daerah yang menghadap matahari
akan selalu bergantian
pergantian wilayah tersebut yang
mengakibatkan terjadinya perbedaan waktu
satu daerah dengan daerah lainnya yang
ketiga gerak semu harian matahari
gerak harian bumi ini juga mengakibatkan
gerak semu harian matahari
dalam setiap harinya kita seolah melihat
matahari sedang berputar dari arah timur
ke arah barat atau yang ditandai dengan
matahari terbit dan terbenam padahal
yang terjadi sebenarnya adalah
pergerakan bumi artinya matahari tidak
bergerak melainkan bumi yang sedang
bergerak
yang keempat pembelokan arus air laut
Hai terjadinya ombak di Pantai dan arus
laut disebabkan oleh adanya angin
harus laut ini berbelok ke arah
perputaran jarum jam di belahan bumi
selatan
Sementara itu di belahan bumi utara arus
laut akan berlawanan dengan arah jarum
jam
pembelokan ini disebabkan oleh rotasi
bumi karena bumi akan berputar di bawah
benda yang bergerak seperti air dan
udara
sebagai sumber belajar selanjutnya gerak
revolusi bumi
dalam ilmu geografi
revolusi bumi diartikan sebagai suatu
peristiwa bumi bergerak mengelilingi
matahari
dalam satu kali revolusi bumi waktu yang
dibutuhkan untuk bisa mengelilingi
adalah 365 lebih seperempat hari atau
kita menyebutnya satu tahun satu kali
revolusi bumi dapat juga disebut sebagai
salary gosip bumi melakukan revolusi
untuk mengelilingi matahari sambil
melakukan putaran rotasi di lintasan
atau orbitnya
arah bumi saat melakukan Revolusi adalah
berlawanan jarum jam
saat mengelilingi matahari posisi bumi
berada dalam kondisi miring 23,5 derajat
terhadap garis tegak lurus ekliptika
Hai akibat gerak revolusi bumi dan
posisi bumi tersebut terjadi beberapa
peristiwa alam yang dirasakan oleh
manusia dan penghuni planet bumi
berikut beberapa dampak revolusi bumi
bagi kehidupan manusia
Hai yang pertama gerak semu tahunan
matahari
gerak semu matahari dapat diamati dari
arah Terbit dan tenggelamnya yang selalu
bergeser sedikit demi sedikit setiap
hari arah geseran matahari terbit adalah
dari atas garis khatulistiwa sampai
garis berikut a ra dan garis balik
selatan
disebut sebagai gerak semu matahari
karena sebenarnya yang bergerak Bukan
matahari melainkan bumi yang bergerak
dengan rotasi miring
yang kedua perubahan musim daerah tropis
hanya memiliki dua musim yakni kemarau
dan penghujan
musim-musim tersebut berulang dalam
jangka waktu satu tahun
yang ketiga perbedaan lama waktu siang
dan malam
peristiwa revolusi bumi dengan posisi
kemiringan sumbu bumi pada bidang
ekliptika membuat panjang waktu siang
dan malam berbeda di belahan bumi
selatan dan Utara
kondisi tersebut dengan wilayah
khatulistiwa yang panjang waktu siang
dan malamnya hampir selalu sama atau tak
banyak berbeda ya keempat perubahan
penampakan rasi bintang saat malam hari
tanpa susunan bintang-bintang dilangit
yang jika diamati akan membentuk
pola-pola tertentu
pola bintang tersebut disebut rasi
bintang ketika bumi berputar arah Timur
Matahari kita akan melihat susunan
bintang yang ada di sebelah timur
matahari
jika bumi bergerak ke barat matahari
yang terlihat adalah bintang-bintang di
sebelah barat yang pola pola susunannya
berbeda dari sebelah timur
Karena itulah kenampakan rasi bintang
berbeda-beda
yang kelima penentuan kalender Masehi
Hai lama waktu revolusi bumi dalam
setahun adalah 365 lebih seperempat hari
untuk membulatkan waktu yang seperempat
hari itu maka setiap empat tahun sekali
ditambahkan satu hari sehingga jumlah
harinya menjadi
366 atau disebut Tahun kabisat
penambahan hari dilakukan di bulan
Februari menjadi 29 hari sobat sumber
belajar
demikian penjelasan dari kami jangan
lupa like share and subscribe channel
sumber belajar Terima kasih
assalamualaikum warahmatullah
wabarakatuh
[Musik]
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