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 9
A rocket launches with a total mass of 500,000 kg and burns 400,000 kg of fuel during ascent. What is the mass of the rocket after burning the fuel?
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.
Explain why communication with spacecraft becomes delayed as they travel farther from Earth.
Explain why heat shields are important for spacecraft re-entering Earth's atmosphere.
Explain why it is important to track space debris.
Explain why satellites in low Earth orbit travel at high speeds.
Name one major challenge faced by astronauts during long-duration space missions.
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 space telescope is placed in orbit above Earth's atmosphere. Explain why this location is better for observing distant stars compared to ground-based telescopes.
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.
Describe one technological challenge in designing a spacecraft that can land safely on the surface of Mars.
Explain how Newton's Third Law of Motion applies to the operation of a rocket in the vacuum of space.
