Gravity

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Gravity: 

Gravity What is it? http://www.fi.edu/pieces/cych/apollo%2010/story/hoi/ball3.html http://www.fi.edu/pieces/cych/apollo 10/story/hoi/ball.html

Gravity is…: 

Gravity is… A natural force that pulls all objects toward the center of the earth.

WHAT IS A FORCE?: 

WHAT IS A FORCE? A pull or a push on an object

Which do you think would fall first?: 

Which do you think would fall first? A bouncy ball Or a marble Try It!

They fall at the same rate of speed, but the marble has more mass (weight) and so gravity makes it fall harder!Gravity has a stronger force on things with more mass!: 

They fall at the same rate of speed, but the marble has more mass (weight) and so gravity makes it fall harder! Gravity has a stronger force on things with more mass!

It takes a force to overcome gravity!: 

It takes a force to overcome gravity! Throw a bean bag in the air and then… Throw a basketball in the air. Which one was harder to throw?

Slide7: 

You had to use more force to throw the basketball because it has more mass (weight)

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