Understanding Gravity

The video explores gravity beyond its basic concept of causing objects to fall. It describes gravity as a universal force attracting all masses, from Earth to distant galaxies. Newton's laws are discussed, highlighting how gravitational force decreases with distance and increases with mass. The video also explains that gravity affects not just massive objects but also light and energy, bending photons and trapping them in black holes.

What is one of the roles of gravity in our solar system?

• It keeps the Earth in orbit around the Sun.

• It causes the Sun to revolve around the Earth.

• It prevents the Moon from rotating.

• It stops the planets from moving.

Which of the following is true about gravitational attraction?

• Gravitational attraction only occurs within our galaxy.

• Gravitational attraction is stronger at night.

• Every object with mass attracts every other object with mass.

• Only large objects like planets have gravitational attraction.

According to Newton, how does the strength of gravity change with distance?

• It decreases with the square of the distance.

• It increases with distance.

• It remains constant regardless of distance.

• It doubles with every unit of distance.

What did Newton discover about the relationship between mass and gravitational force?

• Gravitational force is independent of mass.

• Gravitational force is only affected by the larger mass.

• Gravitational force is inversely proportional to mass.

• Gravitational force is directly proportional to mass.

Why don't we feel the gravitational pull of the Moon as strongly as that of the Earth?

• The Moon has no gravitational force.

• The Moon's gravity is only active during the night.

• The Earth's atmosphere blocks the Moon's gravity.

• The Moon is much smaller and farther away.

What is a unique feature of gravity concerning light?

• Gravity can bend light and trap it in black holes.

• Gravity makes light travel faster.

• Gravity has no effect on light.

• Gravity only affects light from the Sun.

What does gravity attract besides massive objects?

• Light and other massless particles.

• Only objects within the same galaxy.

• Only other massive objects.

• Only objects with a magnetic field.