ROCKET AND PROPULSION

ROCKET AND PROPULSION

3rd Grade

6 Qs

quiz-placeholder

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ROCKET AND PROPULSION

ROCKET AND PROPULSION

Assessment

Quiz

Physics

3rd Grade

Easy

Created by

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.