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Eighth Grade (Grade 8) Science Questions

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Grade 8 :: Atmosphere by tbossu
Grade 8 :: Forces and Motion by wlemerson
Grade 8 :: Forces and Motion by wlemerson
A force is a
  1. constant speed
  2. push or pull
  3. linear quantity
  4. cannot be determined
Grade 8 :: Atmosphere by tbossu
Why does atmospheric temperature increase with altitude in the stratosphere?
  1. because it is closer to the sun
  2. because is it less dense than the troposphere
  3. because it is under a lot of pressure
  4. because of the presence of the ozone layer
Grade 8 :: Forces and Motion by wlemerson
Grade 8 :: Heat Transfer by Testmaker1156
What is convection?
  1. Transfer of heat by the movement of currents within a fluid
  2. Transfer of heat from one particle to another without the movement of matter
  3. The transfer of energy by electromagnetic waves
  4. A conductor
  5. An insulator
Grade 8 :: Atmosphere by Gpereda
Grade 8 :: Scientific Method by wlemerson
Grade 8 :: Periodic Table and Elements by erogers
Grade 8 :: Forces and Motion by wlemerson
A force
  1. causes all motion
  2. starts stationary objects moving
  3. stops moving objects
  4. is an interaction between two or more objects
  5. all of the above
Grade 8 :: Forces and Motion by wlemerson
If two forces act on an object in the same direction, the net force is the
  1. difference of the two forces
  2. sum of the two forces
  3. only one of the forces acts on the object
  4. neither force can affect the object
Grade 8 :: Forces and Motion by wlemerson
The size or amount of a force is known as its
  1. net force
  2. direction
  3. magnitude
  4. constant speed
Grade 8 :: Forces and Motion by wlemerson
Grade 8 :: Cell Structure and Function by B2Good
Grade 8 :: Forces and Motion by ncarlson0923
Grade 8 :: Properties of Matter by csantana
Which of the following is a physical property of an element?
  1. color
  2. ability to rust
  3. ability to burn
  4. ability to tarnish
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