Astronautics – Aerospa MCQsce

1. What is the primary force acting against a spacecraft during launch?
(A) Thrust
(B) Drag
(C) Gravity
(D) Lift

2. What is the minimum velocity required to place an object into Earth’s orbit?
(A) Escape velocity
(B) Orbital velocity
(C) Terminal velocity
(D) Subsonic velocity

3. Which law explains the motion of a rocket in space?
(A) Newton’s First Law
(B) Newton’s Second Law
(C) Newton’s Third Law
(D) Kepler’s Law

4. What is the approximate escape velocity from Earth’s surface?
(A) 7.9 km/s
(B) 11.2 km/s
(C) 15.6 km/s
(D) 3.5 km/s

5. Which type of orbit allows a satellite to remain over the same point on Earth?
(A) Polar orbit
(B) Sun-synchronous orbit
(C) Geostationary orbit
(D) Elliptical orbit

6. The International Space Station (ISS) orbits Earth in which type of orbit?
(A) Geostationary
(B) Low Earth Orbit (LEO)
(C) Medium Earth Orbit (MEO)
(D) High Earth Orbit (HEO)

7. What is the main advantage of using ion propulsion in spacecraft?
(A) High thrust
(B) High efficiency and long-duration propulsion
(C) Low energy consumption
(D) Ability to work in the atmosphere

8. Which celestial body has the weakest gravitational pull?
(A) Earth
(B) Mars
(C) Moon
(D) Jupiter

9. What is the primary function of a heat shield in a spacecraft?
(A) Reduce aerodynamic drag
(B) Protect from micrometeoroids
(C) Prevent overheating during re-entry
(D) Improve communication signals

10. Which space agency was responsible for launching the Voyager spacecraft?
(A) ESA
(B) NASA
(C) Roscosmos
(D) ISRO