What two forces slow a rocket down as it is being launched?
a)
Thrust & Lift
b)
Weight & Drag
2.
I want to get the most thrust from my rocket. What kind of nozzle do I need?
a)
A narrow nozzle
b)
A wide nozzle
c)
It doesn't matter
3.
The force supplied by the rocket engine must be strong enough to overcome...
a)
Gravity
b)
Weight
c)
Thrust
4.
The nose cone of the rocket is shaped to...
a)
Increase thrust
b)
Decrease drag
c)
Increase drag
5.
How does Newton's third law explain how a rocket will take off?
a)
The rocket doesn't move until ignition
b)
The more mass the rocket has the more force is needs to take off
c)
Gas pushes down, the rocket goes up.
6.
Explain how Newton's second law affects a rocket:
a)
A rocket stays at rest until ignition
b)
Gas pushes down, the rocket goes up
c)
The more mass the rocket has the more force it needs to take off
7.
When a rocket is sitting on a launch pad, what type of energy does it have?
a)
Potential
b)
Kinetic
c)
Gravity
8.
When a rocket is blasting off into space, what type of energy does it have?
a)
Potential
b)
Kinetic
c)
Gravity
9.
Why is it important to have fins on your rocket?
a)
They stabilize the rocket
b)
The reduce drag
c)
They evenly distributes the weight
10.
How does Newton's first law explain how a rocket will take off?
a)
The rocket stays at rest until ignition.
b)
The more mass a rocket has the more force is needed to take off.
c)
Gas pushes down, the rocket goes up.
11.
Which of the four forces on a rocket is affected by gravity?
a)
Weight
b)
Thrust
c)
Lift
d)
Drag
12.
What 2 forces does thrust have to overcome for the rocket to be able to take off?
a)
Weight
b)
Thrust
c)
Lift
d)
Drag
13.
As a rocket gets further away from Earth...
a)
the force of gravity gets stronger.
b)
the force of gravity gets weaker.
14.
__________ means a change in motion.
a)
Force
b)
Mass
c)
Acceleration
d)
Inertia
15.
The amount of thrust (force) produced by the rocket engines needs to be __________ than the force of gravity holding it down.
a)
Equal
b)
Greater
c)
Less
16.
Relating to Newton’s Third Law, action and reaction, what is the reaction when a rocket expels gas, smoke and flames from the nozzle end of the rocket engine?
a)
Nothing
b)
Propels in the opposite direction
c)
Creates a balanced force
d)
Creates friction
17.
Which rocket component provides stability?
a)
fin
b)
streamer
c)
nose cone
d)
shockcord
18.
What is the function of the engine?
a)
to hold the nose cone to the body tube
b)
provides thrust
c)
provides stability
d)
to hold the rocket straight
e)
increases drag
19.
Who was the first person to step on to the moon?
a)
Neil Armstrong
b)
Buzz Aldrin
c)
Peter Andre
d)
Jacques Chirac
20.
Which of these will change the center of gravity on a rocket?
a)
The placement of the weight
b)
The placement of the fins
c)
The size of the fins
d)
The amount of water in the rocket
21.
What is a PUSH or PULL of an object?
a)
Motion
b)
Force
c)
Friction
d)
Gravity
22.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
23.
It takes more force to accelerate the iron man on the left than the iron man on the right because the iron man on the left has more mass. This best describes
a)
Newton's first law, the law of inertia
b)
Newton's second law, the law of acceleration
c)
Newton's third law, the law of action reaction
d)
The law of universal gravitation
24.
For every action, there is an equal and opposite reaction.
a)
Newton's 1st Law of Motion
b)
Newton's 2nd Law of Motion
c)
Newton's 3rd Law of Motion
25.
An automobile you are riding in suddenly stops, but you continue to go forward.
a)
Newton's 1st Law of Motion
b)
Newton's 2nd Law of Motion
c)
Newton's 3rd Law of Motion
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rockets
คำถามทั้งหมด: 25
1.
b)
Weight & Drag
2.
a)
A narrow nozzle
3.
b)
Weight
, a)
Gravity
4.
b)
Decrease drag
5.
c)
Gas pushes down, the rocket goes up.
6.
c)
The more mass the rocket has the more force it needs to take off