Rockets are able to lift off and travel because of

• thrust
• speed
• velocity
• escape veocity

The amount of thrust (force) produced by the rocket engines needs to be __________ than the force of gravity holding it down.

• Equal
• Greater
• Less

Identify the part of a rocket seen in the picture.

• Nose Cone 
• Fin
• Payload
• Rocket Engine

The part of a rocket engine where hot gasses exit the engine.

• Hydrogen Tank
• Nose Cone
• Oxygen Tank
• Nozzle

These are all the forces that act on moving rocket.

• Lift, Weight, Gravity & Thrust

• Lift, Drag, Gravity & Thrust

• Lift, Push, Pull & Drag

• Lift, Thrust & Drag

Resistance that slows an object down in the atmosphere(air).

• Drag

• Fin

• Fuselage

• Speed of Sound

Two identical soccer balls are launched across the field by a catapult five minutes apart. One ball travels 5 meters further than the other. What explanation can be given for this difference?

• One ball experienced more gravity than the other.

• One ball experienced more drag because of the wind.

• One ball was heavier than the other.

• It is impossible for the two balls to travel different distances.

Launched first liquid fuel rocket.

• NASA
• Tsiolkosky
• R. Goddard
• Newton

Speed needed to break away from the gravitational pull of a planet.

• thrust
• orbital velocity
• warp
• escape velocity

What is the main difference between a jet engine and a rocket engine?

• Rocket engines function by expelling hot gases opposite to the direction of desired acceleration, jet engines do not.

• Jet engines have nozzles and rockets do not.

• Jet engines get oxygen to burn fuel from the air and rocket engines carry their own which allows them to operate in space.

• Jet engines are generally more powerful and wasteful than rocket engines.