The Enlightenment & Modern Astronomy

What did Galileo observe when pointing his telescope to Jupiter?

• Jupiter was the smallest planet in our solar system

• Jupiter had four “stars” orbiting it

• Jupiter was the brightest celestial object in the sky

• Jupiter had phases similar to our Moon

What did Galileo observe when pointing his telescope to Venus?

• Venus was the largest planet in our solar system

• Venus had four “stars” orbiting it

• Venus had rings around it

• Venus had phases similar to our Moon

According to Newton’s first law of motion, what will occur to an object if there is no external force?

• The object will stay at rest

• The object will stay in motion at a constant speed

• The object will increase speed

• The object will decrease speed

According to Newton’s law of gravity, what does the gravitational force of an object depend on?

• Mass

• Force

• Acceleration

• All of the above

What was the name of Einstein’s publication that described his theories on gravity?

• Dialogue Concerning the Two Chief World Systems

• Universal Law of Gravitation

• General Theory of Relativity

• Philosophiae Naturalis Principia Mathematica

What conditions did Sir Arthur Eddington need to prove Einstein’s theory?

• A partial solar eclipse

• A lunar eclipse

• A total solar eclipse

• The alignment of all the planets

The tendency of an object to resist a change in motion

• Inertia

• Acceleration

• Gravitational force

• Principle of Equivalence

The act of increasing speed or velocity

• Inertia

• Acceleration

• Gravitational force

• Principle of Equivalence

The force that attracts any two objects with mass

• A.Inertia

• Acceleration

• Gravitational force

• Principle of Equivalence

Weight

• Mass

• Inertia

• Velocity

• Astronomical Unit