Space Exploration Technologies
Physics ⇒ Earth and Space Physics
Space Exploration Technologies starts at 8 and continues till grade 12.
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See sample questions for grade 12
A spacecraft uses a radioisotope thermoelectric generator (RTG) for power. Explain why this technology is used for missions far from the Sun.
Describe the function of solar panels on a spacecraft.
Describe the main difference between a probe and a rover in space exploration.
Describe the role of ground control stations in space missions.
Explain the importance of redundancy in spacecraft systems.
Explain the purpose of a heat shield in a spacecraft re-entering Earth's atmosphere.
Explain the significance of the Van Allen radiation belts for spacecraft design.
Explain why communication with spacecraft becomes delayed as the distance from Earth increases.
Which law explains why a rocket moves upward when exhaust gases are expelled downward?
(1) Newton's First Law
(2) Newton's Second Law
(3) Newton's Third Law
(4) Law of Universal Gravitation
Which of the following is a key reason for using robotic spacecraft for planetary exploration instead of crewed missions?
(1) Lower cost
(2) Faster travel
(3) More accurate data
(4) Larger payloads
Which of the following is a major advantage of ion propulsion over chemical propulsion?
(1) Higher initial thrust
(2) Greater fuel efficiency
(3) Simpler design
(4) Lower cost
Which of the following is NOT a challenge faced by humans during long-duration space missions?
(1) Microgravity effects
(2) Cosmic radiation
(3) Unlimited food supply
(4) Psychological stress
A satellite in low Earth orbit completes one revolution around Earth in approximately ______ minutes.
Fill in the blank: The ______ effect is used to change the trajectory and speed of a spacecraft by passing it close to a planet.
Fill in the blank: The ______ is the boundary between Earth's atmosphere and outer space, commonly defined at 100 km above sea level.
Fill in the blank: The ______ is the part of a rocket that contains the guidance and control systems.
True or False: The Hubble Space Telescope is located outside Earth's atmosphere to avoid atmospheric distortion of images.
True or False: The International Space Station (ISS) orbits the Earth in the thermosphere.
True or False: The main challenge of landing on Mars is its thin atmosphere, which provides little aerodynamic drag for slowing down spacecraft.
True or False: The main purpose of a space telescope is to observe astronomical objects without atmospheric interference.
