ROCKET AND PROPULSION

Quiz
•
Physics
•
3rd Grade
•
Easy
Syakima Ibrahim
Used 9+ times
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Acceleration does not depend on the exhaust velocity, burning of the fuel, and mass of the rocket.
TRUE
FALSE
Answer explanation
This statement is false because acceleration depends on exhaust velocity, burning of the fuel, and also the mass of the rocket.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the mass of the rocket decreases, acceleration will .
(a)
Increase
Decrease
Answer explanation
If the mass of the rocket decreases, the acceleration increases greater.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the fuel in the rocket is burned slower, then the acceleration is greater.
True
False
Answer explanation
This statement is false because when the rocket’s fuel burns faster, the acceleration increases, according to factors that affect it.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which physic principle explain all propulsion of rockets
Pressure
Newton's Third Law
Newton's First Law
Newton's Second Law
Answer explanation
The propulsion of all rockets is explained by the same physical principle: Newton's third law of motion.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
'---- is nothing but the force by which a planet or other body draws objects toward its centre '
Gravity
Pressure
Momentum
Centrepetal force
Answer explanation
Gravity
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a rocket engine, fuel and a source of oxygen, called an oxidizer, are mixed and exploded in a combustion chamber. The combustion produces hot exhaust, which is passed through a nozzle to accelerate the flow and produce _______.
oxygen
power
force
thrust
Answer explanation
In a rocket engine, fuel and a source of oxygen, called an oxidizer, are mixed and exploded in a combustion chamber. The combustion produces hot exhaust, which is passed through a nozzle to accelerate the flow and produce thrust.
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