Want to see correct answers?
Login or join for free!
  Science Worksheets
Looking for Science worksheets?
Check out our pre-made Science worksheets!
Share/Like This Page
Filter By Grade

You are browsing Grade 8 questions. View questions in All Grades.

Kindergarten Grade 1 Grade 2 Grade 3 Grade 4 Grade 5 Grade 6 Grade 7 Grade 8 Grade 9 Grade 10 Grade 11 Grade 12 College Graduate Continuing Education

Browse Questions

Eighth Grade (Grade 8) Science Questions

You can create printable tests and worksheets from these Grade 8 Science questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

Previous Page 218 of 324 Next
Grade 8 Physics
Efficiency in machines refers to                                                   .
  1. how fast a machine can operate
  2. how well a machine converts energy into useful work
  3. the size and weight of a machine
  4. the cost of operating a machine
Grade 8 Physics
Hybrid and electric cars, achieve improved fuel efficiency by                                         .
  1. increasing friction between moving parts
  2. implementing energy-intensive features
  3. utilizing regenerative braking systems
  4. reducing aerodynamic design optimizations
Grade 8 Physics
According to Coulomb's Law, the electric force between two charged objects is directly proportional to                                        .
  1. the distance between them
  2. the square of the distance between them
  3. the sum of their charges
  4. the product of their charges
Grade 8 Physics
Objects become charged when they                       .
  1. gain or lose protons
  2. gain or lose neutrons
  3. gain or lose electrons
  4. gain or lose photons
Grade 8 Physics
The polarization in the context of static electricity is                                              .
  1. the accumulation of charges on an object
  2. the separation of charges in an insulator
  3. the neutralization of charges on a conductor
  4. the process of discharging static electricity
Previous Page 218 of 324 Next