ROCKETRY 2025 FINAL EXAM QUESTIONS AND
CORRECT ANSWERS
accelerate - CORRECT ANSWERS The rate of change in the velocity (speed) of a moving
body when going faster.
blast deflector plate - CORRECT ANSWERS A metal plate that slides over the launch rod
used to prevent the ignited engine propellant from burning or scorching the launcher or the
vegetation beneath it.
center of gravity - CORRECT ANSWERS That point in a body around which its weight is
evenly distributed. The balance point.
center of pressure - CORRECT ANSWERS The point on a model rocket where an air current
will no longer cause either end of the rocket to point into the wind. If the center of pressure is
behind the center of gravity on the model, the air pressure will exert the greatest pressure
against the fins forcing the model to fly straight.
clinometer - CORRECT ANSWERS An instrument used to measure angles of slope or
inclination.
delay charge - CORRECT ANSWERS The second of three charges in a model rocket engine.
This charge (1) allows the rocket to slow down and (2) provides a visible smoke trail for tracking
the rocket.
drag - CORRECT ANSWERS The resisting forces of air acting on a model rocket during its
upward flight.
CORRECT ANSWERS
accelerate - CORRECT ANSWERS The rate of change in the velocity (speed) of a moving
body when going faster.
blast deflector plate - CORRECT ANSWERS A metal plate that slides over the launch rod
used to prevent the ignited engine propellant from burning or scorching the launcher or the
vegetation beneath it.
center of gravity - CORRECT ANSWERS That point in a body around which its weight is
evenly distributed. The balance point.
center of pressure - CORRECT ANSWERS The point on a model rocket where an air current
will no longer cause either end of the rocket to point into the wind. If the center of pressure is
behind the center of gravity on the model, the air pressure will exert the greatest pressure
against the fins forcing the model to fly straight.
clinometer - CORRECT ANSWERS An instrument used to measure angles of slope or
inclination.
delay charge - CORRECT ANSWERS The second of three charges in a model rocket engine.
This charge (1) allows the rocket to slow down and (2) provides a visible smoke trail for tracking
the rocket.
drag - CORRECT ANSWERS The resisting forces of air acting on a model rocket during its
upward flight.
