Gravity

What is gravity?

• A force that pushes objects away from each other

• A force that pulls objects toward each other

• A force that only affects objects on Earth

• A force that only affects objects in space

According to the video, what would happen if there were no gravity on Earth?

• Everything would float off into space

• Objects would become heavier

• Time would stop

• The Earth would stop rotating

What famous story is associated with Isaac Newton's discovery of gravity?

• He observed planets through a telescope

• An apple fell on his head while sitting under a tree

• He dropped two spheres of different masses from a tower

• He invented the first mechanical clock

How does mass affect the force of gravity between two objects?

• More mass means less gravitational force

• More mass means more gravitational force

• Mass does not affect gravitational force

• Only the mass of one object matters

Why do astronauts on the Moon experience less gravity than on Earth?

• The Moon is farther from the Sun

• The Moon has less mass than Earth

• The Moon has no atmosphere

• The Moon spins faster than Earth

What role does air resistance play in the motion of falling objects on Earth?

• It speeds up all objects equally

• It slows down objects with larger surface areas

• It has no effect on falling objects

• It only affects objects made of metal

According to the video, why don't we feel the gravitational pull of everyday objects around us?

• Their masses are too small to have a noticeable effect

• Earth's gravity cancels out all other gravitational forces

• Gravity only works over large distances

• We do feel it, but only when we concentrate

What would happen to the planets in our solar system if the Sun's gravity suddenly disappeared?

• They would continue orbiting in the same paths

• They would fly off in straight lines into space

• They would crash into each other

• They would stop moving altogether

How does gravity affect the shape of planets and stars?

• It pulls them into irregular shapes

• It pulls them into spherical shapes

• It has no effect on their shape

• It makes them flat

What was the primary focus of Galileo's gravity experiment?

• To measure the speed of light

• To determine if objects of different masses fall at the same rate

• To calculate the Earth's circumference

• To study the phases of the Moon