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Twelfth Grade (Grade 12) Astronomy Questions

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Grade 12 Stars
Grade 12 Stars
Which of these stars is hottest?
  1. Red Star
  2. Yellow Star
  3. Orange Star
  4. Blue Star
Grade 12 Sun
What happens during nuclear fusion?
  1. Hydrogen and oxygen join to create water
  2. Hydrogen atoms join to create helium
  3. Oxygen is formed in the Sun
  4. Solar flares are produced in the Sun
Grade 12 Sun
Which of the following characterizes solar flares?
  1. Eruptions in the Sun
  2. Holes present in the Sun
  3. Mountains present in the Sun
  4. Waves in the Sun
Grade 12 Universe
What is a light-year?
  1. a shorter than average year
  2. the distance that light travels in one year
  3. the time it takes light to travel from the Sun to Earth
  4. the speed of time travel
Grade 12 Space Exploration
Astrobiology is best described as                                                       .
  1. the study of animals in space
  2. the scientific search for evidence of intelligent life
  3. the study of life in the universe
  4. none of the above
Grade 12 Universe
Which of the following statements is NOT true about stars, galaxies and the universe?
  1. The universe contains a billion x a billion stars.
  2. A galaxy contains solar systems.
  3. There are billions of galaxies in a solar system.
  4. Light years are used to measure distance between stars and galaxies.
Grade 12 Stars
Which star is the coldest?
  1. Yellow Star
  2. Red Star
  3. Orange Star
  4. Blue Star
Grade 12 Sun
What do you call the middle layer in the Sun's atmosphere?
  1. Chromosphere
  2. Corona
  3. Solar wind
  4. Sunspots
Grade 12 Space Exploration
Who published the first heliocentric model?
  1. Tycho Brahe
  2. Ptolemy
  3. Kepler
  4. Copernicus
Grade 12 Stars
Examining the H-R diagram below, which of the following observations about Proxima Centauri's star is most likely accurate?
  1. Proxima Centauri's Star is less bright than the Sun and has a surface temperature below 3,400 K.
  2. Proxima Centauri's Star is brighter than the Sun and has a surface temperature below 4,000 K.
  3. Proxima Centauri's Star is less bright than the Sun and has a surface temperature above 3,400 K.
  4. Proxima Centauri's Star is brighter than the Sun and has a surface temperature above 4,000 K.
Grade 12 Sun
What are the three layers in the Sun's interior?
  1. Convection Zone, Radiation Zone and the Core
  2. Convection Zone, Corona and the Core
  3. The Core, Photosphere and Radiation Zone
  4. Chromosphere, Corona and the Core
Grade 12 Sun
The solar wind is made of                               .
  1. electrically charged particles
  2. gaseous materials
  3. solar flares
  4. sunspots
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