Orbit

The video tutorial explains the concept of orbits, describing how planets and moons revolve around larger celestial bodies due to gravity. It highlights the elliptical shape of orbits and the role of gravity as a force of attraction. The tutorial also discusses how time is measured based on planetary orbits, with Earth taking 365.25 days to orbit the sun, while Mercury and Neptune have significantly different orbital periods. The moon's orbit around Earth is linked to the lunar month, and Earth's tilt during its orbit causes seasonal changes. The video concludes with a thought experiment on altering a planet's orbit to change the length of a year.

What is an orbit and how does it relate to celestial bodies?

How do satellites assist with communication on Earth?

Explain how gravity affects the motion of planets and moons.

Describe the difference in orbital periods between Mercury and Neptune.

What is the significance of the moon's orbit around the Earth?

How does the tilt of the Earth affect the seasons?

If you wanted to make a year last longer, what changes would you need to make to a planet's orbit?