Bill Nye Gravity
Review
Bill Nye Gravity
• What makes planets round?
•Gravity
Bill Nye Gravity
• Everywhere on the Earth this
force of attraction is always
• (up down or sideways)
• toward the object?
•Down
Bill Nye Gravity
• Who was the famous guy who
performed the experiment who
dropped two cannon balls with
different masses of the Tower of
Pisa?
•Galileo
Bill Nye Gravity
• If you drop two cannon balls of
unequal weights will they hit the
ground at the same or different
times?
•Same
Bill Nye Gravity
• If you drop a penny and a
feather on the moon will they hit
the ground at the same or at
different times?
•Same
Bill Nye Gravity
• If you drop a penny and a
feather on the Earth will
they hit the ground at the
same or at different times?
•Same
Bill Nye Gravity
•Gravity keeps all the
planets in
•______________
•around the sun?
Bill Nye Gravity
• Weight comes from our mass,
the earth’s mass, and the pull of
•Gravity
•Between these
masses
Bill Nye Gravity
• Everything has gravity.
• True or False
•True
Bill Nye Gravity
• In the sock, string, toilet paper
roll and apple spinning thingy
demonstration… Which item
represents the sun’s gravity?
•?
Bill Nye Gravity
• Thrust, weight, lift, and drag are
all the things that a
• ________________________
• Has to account for while
designing an airplane
Bill Nye Gravity
• When skydiving the force of
gravity balances
• ___________________
• When you reach terminal
velocity.
Bill Nye Gravity
• What happens to our mass
when we go to another planet
larger than the Earth?
•?
Bill Nye Gravity
• What happens to our weight
when we go to another planet
smaller than the Earth?
Bill Nye Gravity
• The moon’s gravity is (more or
less) than the Earth’s
•Less
Bill Nye Gravity
• What is the speed of the Earth’s
Revolution in kilometers per hr
•?