Class VII

When we look up at night sky we see
  1. airplanes
  2. moons
  3. planets
  4. stars and galaxies
Like Sun, stars produce
  1. heat and light
  2. heat, light and sound
  3. heat, light, sound and radiations
  4. heat, light, sound and radiations
Color of star gives us idea of its
  1. inner core
  2. outer core temperature
  3. mantle temperature
  4. surface temperature
Along with stars, there is a huge capacity of dust and
  1. asteroids
  2. meteoroids
  3. gases
  4. vacuum
In our galaxy, there are about
  1. 1000 stars
  2. 2000 stars
  3. 500,000 million stars
  4. 500 million stars
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