Understanding Gravity: From Galileo to Einstein

What did Galileo's experiments reveal about falling objects?

• They do not fall at all.

• They fall faster in a vacuum.

• They fall at the same rate when air resistance is ignored.

• They fall at different rates depending on their mass.

According to Newton, what keeps the moon in orbit around the Earth?

• The moon's own gravity

• The gravitational pull between the Earth and the moon

• The sun's gravitational force

• The Earth's magnetic field

What limitation did Newton's theory of gravity have?

• It could not predict the orbit of Mercury accurately.

• It could not explain why objects fall.

• It could not describe the motion of planets.

• It could not explain the tides.

How did Einstein's theory of gravity differ from Newton's?

• Einstein thought gravity was caused by magnetic fields.

• Einstein suggested gravity is a force of attraction.

• Einstein proposed gravity is a bending of space and time.

• Einstein believed gravity does not exist.

What is a black hole according to Einstein's theories?

• A star that has exploded

• A planet with no atmosphere

• A region in space with high mass and almost zero size

• A large asteroid