Forces: Gravity

What is gravity?

• A force that pulls objects towards each other
• A force that pushes objects away
• A type of energy
• A scientific theory

Who is credited with the theory of gravity?

• Albert Einstein
• Galileo Galilei
• Isaac Newton
• Niels Bohr

What did Newton observe that led him to question gravity?

• A star exploding
• An apple falling from a tree
• A bird flying
• A rock rolling down a hill

What determines the strength of gravity?

• Color and temperature
• Mass and distance
• Shape and size
• Speed and direction

Why don't penguins fly off into space?

• They are too heavy
• Gravity pulls them towards the Earth
• They have wings
• They are afraid

What happens to the force of gravity as distance increases?

• It becomes stronger
• It stays the same
• It becomes weaker
• It disappears completely

What is the relationship between mass and gravity?

• More mass means weaker gravity
• More mass means stronger gravity
• Mass has no effect on gravity
• Gravity is only affected by distance

How does gravity affect the planets in our solar system?

• It makes them spin
• It keeps them in orbit around the Sun
• It causes them to collide
• It has no effect

What would happen if you were on a planet with much stronger gravity than Earth?

• You would float away
• You would feel heavier
• You would feel lighter
• You would not notice a difference

What is the gravitational pull of the Sun compared to the Earth?

• Weaker
• Stronger
• The same
• Non-existent