Space Exploration Technologies
Physics ⇒ Earth and Space Physics
Space Exploration Technologies starts at 8 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Space Exploration Technologies.
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See sample questions for grade 9
A satellite orbits Earth at a constant speed of 7.8 km/s. What is the main force keeping it in orbit?
Describe one advantage of using space robots for planetary exploration.
Describe one way in which microgravity affects the human body.
Describe the main purpose of a space probe.
Describe the role of mission control during a space mission.
A rocket engine produces a constant thrust of 2,000,000 N. If the rocket's mass is 100,000 kg, what is its initial acceleration? (Ignore air resistance and gravity for this calculation.)
A satellite in geostationary orbit completes one revolution around Earth in 24 hours. Calculate the number of revolutions it makes in 10 days.
A spacecraft is designed to travel to a distant planet using a combination of chemical rockets and ion thrusters. Explain the main advantage of using ion thrusters for the long journey after leaving Earth's orbit.
Which law explains why rockets are able to launch into space?
(1) Newton's First Law
(2) Newton's Second Law
(3) Newton's Third Law
(4) Law of Universal Gravitation
Which of the following best describes a rover?
(1) A spacecraft that orbits planets
(2) A vehicle designed to move across the surface of a planet or moon
(3) A telescope in space
(4) A satellite used for communication
Which of the following best explains why rockets have multiple stages?
(1) To carry more passengers
(2) To reduce weight as fuel is used
(3) To increase gravity
(4) To slow down the rocket
Which of the following is a function of the International Space Station (ISS)?
(1) Mining asteroids
(2) Conducting scientific research
(3) Launching rockets
(4) Observing deep space
Fill in the blank: The ________ effect is used to increase the speed of a spacecraft by using the gravity of a planet.
Fill in the blank: The ________ is a laboratory in space where astronauts from different countries work together.
Fill in the blank: The ________ is the boundary between Earth's atmosphere and outer space, commonly defined at 100 kilometers above sea level.
Fill in the blank: The ________ is the part of a rocket that carries astronauts or scientific instruments.
True or False: Rockets work in space because they push against the air.
True or False: Spacecraft must reach escape velocity to leave Earth's gravity.
True or False: The Hubble Space Telescope is located on the surface of the Earth.
True or False: The main function of a launch pad is to provide a stable platform for rocket launches.
