Pelajaran IPA : Proses Terjadinya Siang dan Malam | Kelas 3 SD

Summary

This video explains how Earth’s rotation and revolution cause the cycle of day and night. As Earth rotates on its axis, one side faces the Sun, experiencing daytime, while the other side remains in darkness, experiencing nighttime. The video also highlights the effects of this on temperature and visibility, with daylight being warmer and nighttime cooler. Additionally, it covers Earth's annual revolution around the Sun, taking 365 days, and its daily rotation, which lasts 24 hours. A simple yet engaging explanation of these natural processes.

Takeaways

• 😀 Earth rotates around the Sun and also on its axis, which causes day and night.
• 🌞 During the day, the side of the Earth facing the Sun experiences daylight.
• 🌙 The opposite side of Earth, which faces away from the Sun, experiences night.
• 🌞 The daytime is bright, and the temperature is warmer due to sunlight.
• 🌙 The nighttime is dark, and the temperature is cooler because there is no sunlight.
• 🌕 While we can't see the Sun at night, we can see the Moon and stars.
• 🔄 Earth takes 365 days, or one year, to complete its revolution around the Sun.
• ⏳ Earth completes one full rotation on its axis every 24 hours, or one day.
• 🌍 The Earth's rotation causes the cycle of day and night.
• 📅 The rotation and revolution of Earth contribute to the passage of time, marked by days and years.

Q & A

What causes the cycle of day and night on Earth?

The cycle of day and night on Earth is caused by Earth's rotation on its axis. As Earth rotates, different parts of the planet face the Sun, experiencing daylight, while the other side faces away from the Sun, experiencing night.

What is Earth's rotation?

Earth's rotation refers to the spinning of the planet around its axis. This rotation takes approximately 24 hours to complete, which defines the length of a day.

How long does it take for Earth to complete one rotation?

Earth takes approximately 24 hours to complete one full rotation on its axis, which constitutes one day.

Why do we experience daytime and nighttime on Earth?

Daytime occurs when a part of Earth is facing the Sun, receiving sunlight, while nighttime happens when a part of Earth is facing away from the Sun and is not illuminated by sunlight.

What happens to the temperature during the day and night?

During the day, the temperature tends to be warmer because Earth receives heat from the Sun's rays. At night, the temperature drops and becomes colder due to the absence of sunlight.

Why does the sky appear dark at night?

The sky appears dark at night because Earth is turned away from the Sun, so we no longer receive sunlight. However, the moon and stars are visible, as they are not affected by Earth's rotation in the same way.

How long does it take for Earth to complete its revolution around the Sun?

It takes Earth approximately 365 days, or one year, to complete one full revolution around the Sun.

What is the relationship between Earth's rotation and day length?

Earth's rotation directly determines the length of a day. As Earth rotates once every 24 hours, this rotation defines the day-night cycle.

What other celestial bodies can we see at night besides the moon?

In addition to the moon, we can also see stars at night. These celestial bodies remain visible because they are not affected by Earth's rotation, unlike the Sun.

How does the Sun's position affect Earth's daytime and nighttime?

The Sun's position determines whether it's daytime or nighttime on Earth. When a part of Earth is facing the Sun, it experiences daylight, and when it is turned away, it experiences nighttime.