Forces and Motion 6 th Grade Unit Becky Berg What is Gravity? Gravity is the word we use to describe the pull between masses. Things with more MASS produce a greater Gravity pull on each other. A Little Song About Gravity Click on the music note to hear the gravity song!
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6th Grade Unit
Gravity is the word we use to describe the pull between masses.
Things with more MASS produce a greater Gravity pull on each other.
Click on the music note to hear the gravity song!
No! Not Always!
Do things that have more mass always weigh more?
Oh where, oh where, has my weight gone? Oh where, oh where can it be?
You are floating around. You drift over to a floating bathroom scale and put your feet on it. Your feet do not push down on the scale at all. The scale shows that you weigh 0. You have lost your weight—but did you lose your mass?
So, if I ate a lot of yummy tuna fish while standing on the scale, I would gain mass.
The pull between the earth and me would become greater—and I would weigh more!
During my trip to the moon, my mass does not change, but the moon has much less mass than the earth.
There is less gravity pull between you and the moon. If you stood on the scale on the moon—you would weigh less than on earth!