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Eighth Grade (Grade 8) Science Questions

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Grade 8 Physics
Which one of the following atomic particles has the least mass?
  1. Neutron
  2. Proton
  3. Electron
  4. Deuteron
Grade 8 Physics
Unlike the fission reaction, the fusion reaction requires                             for the process to occur.
  1. a lot of heat and energy
  2. no energy at all
  3. splitting of a heavy nucleus
  4. the rearrangements of atoms
Grade 8 Physics
The fusion reaction is a common type of                             .
  1. combustion reactions
  2. decomposition reaction
  3. double displacement reaction
  4. nuclear reaction
Grade 8 Waves and Sound
Which best describes electromagnetic energy?
  1. moves electrons
  2. travels through space as waves
  3. forms chemical bonds
  4. generates electrical energy
Grade 8 Physics
Helium-4 nuclei atoms are identical to the                .
  1. alpha particles
  2. beta particles
  3. gamma particles
  4. delta particles
Grade 8 Nervous and Endocrine Systems
If you hit your hand and you feel the pain, this is part of what sense?
  1. hearing
  2. smelling
  3. seeing
  4. touch
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