How can we help?

You can also find more resources in our Help Center.

Rockets

STUDY
PLAY
Newton's First Law
An object will keep moving at a constant velocity unless an outside net force acts upon it
Newton's Second Law
An object will accelerate in the direction of the applied force
Newton's Third Law
For every action there is an equal but opposite reaction force
Propellant
Fuel used to propel (move) rockets
Thrust
the force that propels (moves) the rocket
Impulse
The force applied times the amount of time that the force is applied in seconds
Mass
the amount of matter in a substance
Force
a push or a pull on an object
Acceleration
the change in velocity per unit time
Velocity
the displacement per unit time, includes both speed and direction
Liquid Propellant
a liquid fuel, usually liquid oxygen, hydrogen, or methane
g
the acceleration due to gravity, changes depending upon the mass and radius of the planet or moon
exhaust gases
what is sent out the back of a rocket
Solid fuel
Solid chemicals used to propel (move) a rocket, once lit they can not be stopped
Kepler's First Law
The path of the planets about the sun are elliptical in shape, with the center of the sun being located at one focus. (The Law of Ellipses)
Kepler's Second Law
An imaginary line drawn from the center of the sun to the center of the planet will sweep out equal areas in equal intervals of time. (The Law of Equal Areas)
Kepler's Third Law
The ratio of the squares of the periods of any two planets is equal to the ratio of the cubes of their average distances from the sun. (The Law of Harmonies)
Payload
the cargo carried into space by the rocket
Geostationary orbit
an orbit directly above the same spot on the earth's surface, the orbital period matches the rotation period of the planet
Rotation period
The amount of time it takes for a planet or moon to rotate once around its axis
Orbital period
the amount of time it takes a planet to orbit around the sun or for a satellite to complete one orbit
Satellite
an object that orbits a larger object
Asynchronous orbit
Satellites that orbit in same direction as earth's rotation but faster
Polar orbit
Satellites that move at right angles to the rotation of the planet or moon. This means the entire surface is covered over time.
Communication satellite
Satellite used to transmit and transfer phone, television, email and internet signals
Weather satellite
Satellites used to record temperature, cloud cover, precipitation, etc.
Remote sensing satellite
Satellite used to record electromagnetic radiation. Data is used to interpret several physical and biological processes occurring on the planet.
Global positioning satellite
Satellite used to help locate yourself on the surface of the planet