# sam science

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1. educated quess using what you know and what you observe
hypothesis
2. amount of space occupied by an object
volume
3. push or pull that one body exerts on another
force
4. force that opposes motion between two touching surfaces
friction
5. states that any two masses exert an attractive force on eachother, 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, different depending on when it is measured
instantaneous speed
11. factor that can cause a change in the result of an experiment
variable
12. speed of an object and the direction it travels
velocity
13. forces on a body that are equal in size and oppostie in direction and do not change the motion of the body
balanced force
14. a force directed toward the center of the circle for an object moving in circular motion
centripetal force
15. property that a moving object has because of its mass and velocity
momentum
16. in an experiment, a variable that does not change when other variables change
constant
17. rate of change of velocity, which occurs if an object speeds up, changes direction, or slows down
acceleration
18. resistance of an object to a change in its motion
inertia
19. gravitational force exerted on an object by earth
weight
20. total distance that an object travels divided by the total time it takes to travel that distance
average speed
21. formula to convert celsius to kelvin
c + 273
22. formula to convert kelvin to celsius
k - 273
23. formula to find momentum (p)
p= mv
24. formula to find velocity
v= p/m
25. formula to convert L to mL
L x 1,000
26. formula to convert mL to L
mL / 1,000
27. formula to find speed
s= d/t
28. formula to find acceleration
• a= (Vf - Vi) / t
29. formula to find force
• f= ma
• a= f /m
30. an object moving at a constant velocity keeps moving at that velocity until a net force acts on it
newton's first law of motion
31. the net force acting on an object causes the object to accelerate in the direction of the net force
newton's second law of motion
32. when one object exerts a force on a second object, the second one exerts a force on the first that is equal in size and opposite in direction (to every action force there is an equal and oppostie reaction force)
newton's third law of motion
 Author: daraxoxo19@aim.com ID: 49316 Card Set: sam science Updated: 2010-11-13 23:47:11 Tags: vocabulary Folders: Description: science comp review Show Answers: