Rodolfo Eric Angat explains Earth's revolution around the solar system's barycenter, highlighting its counterclockwise direction and 365.25-day cycle, which leads to leap years. He discusses Kepler's Law, noting Earth's elliptical orbit and how it affects visible constellations throughout the year. The video concludes with a reminder of Earth's three motions in space, with future lessons to cover the remaining two.

What is the primary reason stars appear to change positions in the sky?

• Earth's revolution around the Sun

• The movement of stars themselves

• Earth's rotation on its axis

• Changes in Earth's atmosphere

What is the duration of Earth's revolution around the Barycenter of the Solar System?

• 365 days

• 365.25 days

• 364.25 days

• 366 days

Why do we have a Leap Year every four years?

• To synchronize with the lunar calendar

• To celebrate astronomical events

• To account for the extra 0.25 days each year

• To adjust for Earth's elliptical orbit

According to Kepler's Law, what is the shape of Earth's orbit?

• Circular

• Elliptical

• Rectangular

• Triangular

Which constellation is visible in the night sky during December?

• Virgo

• Orion

• Leo

• Pisces

What constellation can be seen in March?

• Orion

• Virgo

• Pisces

• Scorpius

In which month is the constellation Pisces visible?

• March

• December

• September

• June

What is the direction of Earth's revolution around the Barycenter?

• Clockwise

• Counterclockwise

• Random

• Vertical

How many motions of Earth in space are mentioned, and how many are discussed in this video?

• Three motions, one discussed

• Two motions, both discussed

• Three motions, all discussed

• One motion, one discussed