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26 Cards in this Set

  • Front
  • Back
Hypothesis
A statement that says something about how you expect the world to work
- must be testable
-must be able to be proven wron
Inquiry Cycle
Question-Prediction-Experiments-Model-Apply
A scientist may jump from any point of the inquiry Cycle
Model
Set of rules, so that if we follow them, we will get the tight answer. Allows us to answer questions the same way as the Universe, but we do not know how the Universe answers them
Speed
How fast :
distance
-------
time
Relative Motion
Reference Frame (point of view)
-ground
-egocentric
-heliocentric
Average Speed
distance
-------
time

or

initial + final
---------
2
Average velocity
displacement
------
time
Constant Velocity
same speed, same direction (in a straight line)
Change in Velocity
turning, slowing down, speeding up
Acceleration
Any change in velocity
Rapid Cahnge: big, fast acc
Gradual Change: Small, slow acc

Change in Velocity
------------- = a = ^v/t
Time

= final - intial
----------
Time
Change in Velocity
Acc * time
Distance
average speed * time
Distance (Position Graph)
speed=slope
straight line=constant velocity
curved line=acc
corners= impossible to recreate because one can;t make a change in speed in no time
Velocity Graph
Graph:
Slope
(Position and Velocity Graphs)
Slope- amount of change in what we're graphing
Postion graph- slope will be change in position vs. time (speed
Velocity Graph- Slope will be change in velocity vs. time (acc)
Graph Patterns
Flats----0
Curves----diagonal
diagonal-----flats
Positive Acc
speeding up (+) moving away (+)
slowing down (-) moving toward (-)
Negative Acc
Moving towards (-) speeding up (+)
Moving away (+) slowing down (-)
Instantaneous Speed
Speed at that exact moment
Final Speed
initial+ change in speed
Change in Speed
acc * time

final- initial
--------
time
Free Fall
Motion under the influence of gravity
- no air resistance ect. allowed
- not necessarily falling down
- all objects fall at the same rate (Galileo)
Acc due to Gravity
g= 9.8 m/s2 = 10 m/s2
d=1/2gt2
-Falling from rest
-Not things that are thrown
ex:
- falling 2 times as long-- 4 Times as far
Science vs. Technology
Science- way of knowing
Technology- way of doing
Science vs. Religion
Science- Cosmic Order
Religion- Cosmic purpose