science cards 1

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daraxoxo19@aim.com
ID:
49287
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science cards 1
Updated:
2010-11-13 16:51:06
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science comp review
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  1. educated guess using what you know and what youve observed
    hypothesis
  2. amount of space occupied by an object
    volume
  3. push or pull that one body exerts on another
    force
  4. force that opesses motion between two touching surfaces
    friction
  5. states that any two masses exerts an attractive force on each other, the amount of which depends on the mass of the two objects and the distance between them
    law of gravitation
  6. organized procedure for testing a hypothesis that tests the effect of one thing on another under controlled conditions
    experiment
  7. distance an object travels per unit of time
    speed
  8. sum of the forces that are acting on an object
    net force
  9. acceleration of an object toward the center of a curved or circular path
    centripetal acceleration
  10. speed of an object at a given point in time, which is constant for an object moving at a constant speed and is different at each point in time for an object that is slowing down or speeding up
    instantaneous spead
  11. factor that can cause a change in the results of an experiment
    variable
  12. describes the speed and direction of a moving object
    velocity
  13. forces on a body that are equal in size and opposite in direction and do not change the motion of the body
    balanced force
  14. a force directed toward the center of a cirlce for an object moving in a circular motion
    centripetal force
  15. property that a moving object has because of its mass and velocity
    momentum
  16. a variable that does not change, when other variables change in an experiment
    constant
  17. rate of change of velocity, which occurs when an object speeds up, slows down, or changes direction
    acceleration
  18. resistance of an object to a change in its motion
    inertia
  19. gravitional force exerted on an object by earth
    weight
  20. total distanc that an object travels divided by the total time it takes to travel that distance
    average speed
  21. liters to mili-liters
    • l>mL
    • mutiply times 1000
  22. mili-liters to liters
    • mL>L
    • divide by 1000
  23. celios to kelvin
    • c>k
    • celios plus 273= kelvin
  24. kelvin to celios
    • k>c
    • kelvin - 273= celios
  25. momentum
    • p=mv
    • momentum= mass x velocity
  26. speed
    • s= d/t
    • speed= distance/time
  27. acceleration
    • a= (Vf-Vi)/t
    • acceleration= (final velocity-initial velocity)/time
  28. velocity
    • v= p/m
    • velocity= momentum/mass
  29. mass
    • m= p/v
    • mass= momentum/velocity
  30. newton's 1st law of motion
    • object moving at a constant velocity keeps moving at that velocity until a net force acts on it
    • if npo forces are acting on a moving object, it continues to move
  31. newton's 2nd law of motion
    • all the forces added together is the net force
    • net force acting on an object causes the object to accelerate in the direction of thr net force
  32. newton's third law of motion
    • when one object exerts a force on a second object, the second object exerts a force of the first that is equal in size and opposite in direction.
    • every action has a seperate and opposite reaction

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