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How Things Fly

Across
______ is a force that pulls up an object. It happens when an area of low pressure forms just above a wing, and the high pressure area over that effectively pulls up the wing in an attempt to equalize the air pressure.
__________ is a force that pushes up kites and wings. It happens when air particles hit the underside of the object, causing an upward force
_____ is a force that pulls objects down
Down
If air resistance and lift forces (upwards forces) are greater than gravity (downward force) then the object can _____
the tail and wing flaps of an airplane help _____ the plane left and right, up and down
on helicopters, the ______ keeps the machine from spinning around in a "counter force" motion to the main rotor on the top