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Tenth Grade (Grade 10) Matter Questions

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Grade 10 Matter
Which statement is false regarding the Sun?
  1. It’s almost a perfect sphere.
  2. It's greatly older than the Earth.
  3. It contains 99.86% of the mass in the Solar System
  4. One day it will be about the size of Earth
Grade 10 Nuclear Physics
Grade 10 Quantum Physics and the Atom
How does the energy of a principal energy level depend on the value of n? Does a higher value of n mean a higher or lower energy?
  1. The lower the value of the principal energy level, n, the higher the energy of the principal energy level.
  2. The higher the value of the principal energy level, n, the higher the energy of the principal energy level.
  3. The lower the value of the principal energy level, n, the lower the energy of the principal energy level.
  4. The higher the value of the principal energy level, n, the lower the energy of the principal energy level.
Grade 10 Matter
How do we accurately determine the exact age of (very) old samples?
  1. By relative dating
  2. By absolute dating
  3. By radiometric dating
  4. By any dating as listed
Grade 10 Matter
Where do all nuclear reactions take place in an atom?
  1. the electrons
  2. the neutrons
  3. the nucleus
  4. the protons
Grade 10 Nuclear Physics
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