La gravedad en nuestro universo

The video explains gravity as a fundamental force that attracts objects. Earth's gravity keeps the moon in orbit, while the sun's gravity holds the planets in the solar system. The Milky Way galaxy, with its 200,000 million stars, is held together by gravity. This force also maintains the structure of the universe, making it one of the most crucial forces in existence.

What role does Earth's gravity play in relation to the moon?

• It has no effect on the moon.

• It causes the moon to spin faster.

• It keeps the moon in Earth's orbit.

• It pushes the moon away from Earth.

Why doesn't the Earth float away into space?

• Because of the sun's gravitational pull.

• Because it is the largest object in the solar system.

• Because it is stationary.

• Because of the moon's gravitational pull.

What is the primary reason the sun has the strongest gravitational pull in our solar system?

• It is the oldest star.

• It is the hottest star.

• It has the greatest mass.

• It is the closest star to Earth.

Approximately how many stars are estimated to be in the Milky Way galaxy?

• 200,000 million

• 2 billion

• 200 million

• 20 million

What force is responsible for holding galaxies together in the universe?

• Magnetism

• Electricity

• Gravity

• Nuclear force