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Eighth Grade (Grade 8) Science Questions

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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
Grade 8 :: Forces and Motion by ncarlson0923
When is the velocity of an object constant?
  1. when only its speed changes
  2. when only its direction changes
  3. when its speed and its direction both change
  4. when neither its speed nor its direction change
Grade 8 :: Periodic Table and Elements by erogers
Grade 8 :: Periodic Table and Elements by erogers
Grade 8 :: Forces and Motion by ncarlson0923
Why is Newton's first law sometimes called the law of inertia?
  1. because inertia is the tendency of objects to resist changes to their motion
  2. because inertia describes the application of force to an object at rest
  3. because inertia describes the applications of force to an object in motion
  4. because inertia is the same thing as friction
Grade 8 :: Properties of Matter by csantana
Grade 8 :: Forces and Motion by ncarlson0923
What features determine an object's acceleration?
  1. the forces acting on it and its size
  2. the forces acting on it and its mass
  3. the forces acting on it only
  4. its weight and its mass
Grade 8 :: Periodic Table and Elements by erogers
Which group of elements most readily combines with group 17 elements?
  1. Group 1
  2. Group 17
  3. Group 18
  4. none, group 17 is the most stable group
Grade 8 :: Properties of Matter by erogers
Grade 8 :: Periodic Table and Elements by CoachT44
This element's symbol is Na.
  1. Neon
  2. Nitrogen
  3. Sodium
  4. Natrium
Grade 8 :: Properties of Matter by erogers
Ductility is the ability for metal to be
  1. rolled into sheets
  2. pulled into wires
  3. pressed into angles
  4. melted into molds
Grade 8 :: Properties of Matter by csantana
Matter is made up of small particles. Which of the following correctly lists the particles of matter from the SMALLEST to the LARGEST?
  1. cells, molecules, atoms
  2. atoms, cells, molecules
  3. molecules, atoms, cells
  4. atoms, molecules, cells
Grade 8 :: Properties of Matter by csantana
Grade 8 :: Forces and Motion by ncarlson0923
How often does the tip of an hour hand on a clock have the same velocity?
  1. once every minute
  2. once every hour
  3. once every 12 hours
  4. once every 24 hours
Grade 8 :: Forces and Motion by ncarlson0923
If you use two difference reference points to describe the position of the same item, how will your descriptions differ?
  1. They will always differ in distance.
  2. They will always differ in direction.
  3. They will differ in either distance or direction or both.
  4. They will differ in either distance or direction but not both.
Grade 8 :: Scientific Method by ncarlson0923
Why is Newton's law of gravitational force called a scientific law?
  1. because it is a rule that describes a pattern in nature
  2. because it is a logical explanation of an observation
  3. because it is a statement of what will happen next
  4. because it is an inference based on tested hypotheses
Grade 8 :: Properties of Matter by erogers
Why are metals good conductors of heat and electricity?
  1. they have luster and malleability
  2. they are composed of mixtures
  3. they have a shiny appearance
  4. they have electrons that are able to move freely
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