This video tutorial introduces the Sun-Earth-Moon system, explaining the formation and size of the Moon, the rotation and revolution of Earth and Moon, and the Sun's size and distance. It defines key terms like galaxy, astronomical unit, rotation, and revolution, providing a comprehensive understanding of the celestial dynamics within our solar system.

What is the name of the galaxy that contains our solar system?

• Andromeda

• Milky Way

• Triangulum

• Whirlpool

How was the Moon believed to have formed?

• Formed alongside Earth

• Ejected from Earth's core

• Formed from a collision with an asteroid

• Captured by Earth's gravity

What is the approximate diameter of the Moon?

• 1,000 km

• 12,000 km

• 3,500 km

• 7,000 km

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

• 27.3 days

• 7 days

• 365 days

• 24 hours

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

• 180 days

• 30 days

• 365.25 days

• 400 days

Why do we have a leap year every four years?

• To adjust for Earth's tilt

• To synchronize with the Moon's orbit

• To correct the calendar for seasonal changes

• To account for the extra quarter day each year

What is an astronomical unit (AU)?

• The diameter of the Sun

• The average distance from Earth to the Sun

• The distance from the Sun to the nearest star

• The distance from Earth to the Moon

Why do the Sun and Moon appear to be the same size in the sky?

• The Sun is much farther away than the Moon

• They are at the same distance from Earth

• They are the same size

• The Moon is much larger than the Sun

What is the difference between rotation and revolution?

• Rotation is around the axis, revolution is around the Sun

• Both are the same

• Rotation is for planets, revolution is for stars

• Rotation is around the Sun, revolution is around the axis

What causes day and night on Earth?

• Earth's revolution around the Sun

• The Moon's orbit around Earth

• The Sun's rotation

• Earth's rotation on its axis