Orbita

The video tutorial explains the concept of orbits, describing how planets and moons revolve around larger celestial bodies due to gravity. It covers the elliptical shape of orbits, the role of gravity, and how time is measured based on planetary orbits. The tutorial also discusses objects orbiting Earth, including natural satellites like the moon and artificial satellites. It explains how Earth's orbit and tilt create seasons and concludes with a thought experiment on altering a planet's orbit to change the length of a year.

What is an orbit?

• A fixed point in space

• A random movement of celestial bodies

• The trajectory of one object around another

• A straight line path of an object

What shape is a planet's orbit?

• A perfect circle

• A square

• A triangle

• An ellipse

What force keeps planets and moons in orbit?

• Magnetism

• Electricity

• Gravity

• Friction

How long does it take for Earth to complete one orbit around the Sun?

• 365 1/4 days

• 88 days

• 28 days

• 164.79 years

Which planet has the shortest orbit around the Sun?

• Mars

• Mercury

• Earth

• Neptune

How long does it take for the Moon to orbit the Earth?

• 88 days

• 28 days

• 164.79 years

• 365 days

What causes the different seasons on Earth?

• The Moon's orbit

• Earth's orbit and axial tilt

• The Sun's gravity

• Artificial satellites