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Quiz Chapter 10: Space Exploration

10 questions · Form 3 Science Bab 10: Space Exploration

Question 1 of 10Score: 0

Which astronomer proposed the Geocentric Model stating that Earth is fixed at the center of the Universe?

Full Question List & Answer Key

Prefer reading to quizzing? All 10 questions are listed below with the answer and explanation under each one.

1. Which astronomer proposed the Geocentric Model stating that Earth is fixed at the center of the Universe?

  1. Nicolaus Copernicus
  2. Claudius Ptolemy
  3. Johannes Kepler
  4. Galileo Galilei
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Answer: B

Claudius Ptolemy formulated the Geocentric Model where Earth was considered the static center of the Universe.

2. What improvement did Isaac Newton make to optical telescopes?

  1. He replaced glass lenses with curved mirrors to eliminate color distortion (reflecting telescope).
  2. He made telescopes out of solid lead to absorb radiation.
  3. He attached rocket engines to telescopes to fly them into space.
  4. He added radio antennas to optical lenses.
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Answer: A

Newton invented the reflecting telescope using a concave primary mirror, solving the chromatic aberration issue present in lens refractors.

3. How is remote sensing technology applied in disaster management during major flood events?

  1. By evaporating floodwaters using orbital laser beams
  2. By mapping inundated land areas to assist emergency evacuation and relief efforts
  3. By predicting cloud formation dates three years in advance
  4. By lowering global sea levels automatically
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Answer: B

Remote sensing satellite imagery provides real-time boundary maps of flooded regions to help authorities coordinate rescue operations.

4. What is the primary function of a launch rocket in space missions?

  1. To provide a long-term living habitat for astronauts in orbit
  2. To overcome Earth's gravitational pull and carry payloads into space
  3. To reflect radio signals back to Earth receivers
  4. To harvest solar radiation and convert it into water
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Answer: B

Rockets generate massive thrust by expelling high-velocity exhaust gases to escape Earth's gravity and place spacecraft into orbit.

5. Which technology allows scientists to collect physical and environmental data about Earth's surface from satellite sensors orbiting at a distance?

  1. Geothermal tapping
  2. Remote sensing
  3. Radiocarbon dating
  4. Sonar bathymetry
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Answer: B

Remote sensing uses satellite-borne optical, radar, or infrared sensors to observe Earth's surface features from space.

6. What is the primary advantage of placing space telescopes like the Hubble and James Webb in orbit outside Earth's atmosphere?

  1. They are closer to the Sun to harvest solar energy.
  2. They avoid light distortion, absorption, and cloud interference caused by Earth's atmosphere.
  3. They cost significantly less to build than ground telescopes.
  4. They can capture sound waves traveling through outer space.
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Answer: B

Atmospheric gases, water vapor, and light pollution distort astronomical signals; placing telescopes in space provides pristine image clarity.

7. Which historical space mission successfully landed the first humans on the Moon in July 1969?

  1. Sputnik 1
  2. Apollo 11
  3. Voyager 1
  4. Vostok 1
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Answer: B

NASA's Apollo 11 mission landed Neil Armstrong and Buzz Aldrin on the lunar surface on July 20, 1969.

8. Which of the following is an application of remote sensing in AGRICULTURE?

  1. Locating deep crust fault lines for earthquake prediction
  2. Detecting crop health, disease outbreaks, and soil moisture levels
  3. Tracking military troop movements along borders
  4. Measuring iceberg melting volumes in the Antarctic
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Answer: B

Multispectral sensors on satellites measure light reflection from vegetation to assess chlorophyll concentration and crop health.

9. How did Johannes Kepler modify Nicolaus Copernicus's Heliocentric Model?

  1. He placed Earth back at the center of the universe.
  2. He showed that planets revolve around the Sun in elliptical orbits rather than circular orbits.
  3. He proved that the Sun orbits around Jupiter.
  4. He proposed that planets travel in straight lines through space.
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Answer: B

Kepler refined the heliocentric model by discovering that planetary orbits around the Sun are elliptical, not perfect circles.

10. Why are spacecraft heat shields crucial during atmospheric re-entry upon returning to Earth?

  1. To protect against cosmic radiation particles in orbit
  2. To withstand extreme frictional heat generated by rapid compression of atmospheric air
  3. To prevent cold space temperatures from freezing fuel tanks
  4. To reflect solar light away so astronauts can sleep
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Answer: B

Hurtling into Earth's atmosphere at high speeds creates tremendous atmospheric friction and air compression, generating temperatures exceeding 1,500°C.

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