KIDS TRIVIA

KIDS QUIZ

SPACE EXPLORATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
a machine that uses gas often from burning fuel, to escape Earth’s gravitational pull.
A
Probe
B
Space shuttle
C
Rocket
D
Lander
Explanation: 

Detailed explanation-1: -At-423 degrees Fahrenheit, the engine’s fuel, liquefied hydrogen, is the second coldest liquid on Earth. When it and the liquid oxygen are com-bined and combusted, the temperature in the main combustion chamber is 6, 000 degrees Fahrenheit, hotter than the boiling point of iron.

Detailed explanation-2: -The rocket’s main engines use a combination of liquid hydrogen and liquid oxygen. Hydrogen has the lowest molecular weight of any known substance, making it ideal for keeping the weight of a rocket relatively small. When combined with liquid oxygen, hydrogen creates the most efficient thrust of any rocket propellant.

There is 1 question to complete.