GRAVITY
What force pulls objects down toward Earth?
GRAVITY
What pushes up against the parachute as it falls?
AIR
Before testing, engineers make a what?
PREDICTION
Small parachute
FASTER
Why did our parachute fall slower than a crumpled paper ball?
AIR RESISTANCE
Does gravity make things move up or down?
DOWN
A bigger parachute creates more or less air resistance?
MORE
After testing once, engineers usually… (STOP or IMPROVE IT)
IMPROVE IT
Big parachute
SLOWER
If we doubled the size of the parachute, what might happen?
IT WOULD FALL SLOWER
Does gravity stop working when we drop a parachute?
NO
More air resistance makes something fall faster or slower?
SLOWER
What do we call it when we change our design to make it better?
REDESIGN / IMPROVE
Heavy object + tiny parachute
FASTER
Why do skydivers use parachutes?
TO SLOW DOWN THEIR FALL