Science STAAR Review

• Abiotic: physical rather than biological; not derived from living organisms
• Biotic: relating to or resulting from living organisms
• Convergent Boundary: A boundary between two plates that are moving towards each other.
• Divergent Boundary: A boundary between two plates that are moving away from each other
• Transform Boundary: A boundary between two plates that are sliding against each other.
• D=m/V

  (density=mass/volume)
• s=d/t

  (speed=distance/time)
• F=ma

  (force=mass x acceleration)
• A- Atomic #

  =

  P- Protons

  =

  E- Electrons
• M- Mass #

  -

  A- Atomic #

  =

  N- Neutrons
• Rotation: the action of rotating around an axis or center
• Revolution: the action by a celestial body of going round in an orbit
• Producer: a living organism that makes its own food by photosynthesis.
• Primary Consumer: An organism that eats producers.
• Secondary Consumer: A consumer that eats primary consumers.
• Tertiary Consumer: A consumer that eats secondary consumers.
• Food Chain: A linear representation of the transfer of energy from one organism to another.
• Food Web: A network of interconnected food chains that make up an ecosystem.
• Newton's 1st law: An object will remain at rest or will remain in motion unless acted upon by a resultant force
• Newton's 3rd Law: For every action there is an equal and opposite reaction.
• Newton's 2nd Law: The acceleration of an object is directly proportional to the net force acting on it, and inversely proportional to its mass.
• Inertia: The tendency of an object to resist changes in its state of motion.
• Acceleration (m/s^2): The rate of change of velocity with respect to time.
• Acceleration: The rate of change of velocity.