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26 Cards in this Set
- Front
- Back
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Hypothesis
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A statement that says something about how you expect the world to work
- must be testable -must be able to be proven wron |
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Inquiry Cycle
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Question-Prediction-Experiments-Model-Apply
A scientist may jump from any point of the inquiry Cycle |
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Model
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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
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Speed
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How fast :
distance ------- time |
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Relative Motion
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Reference Frame (point of view)
-ground -egocentric -heliocentric |
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Average Speed
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distance
------- time or initial + final --------- 2 |
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Average velocity
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displacement
------ time |
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Constant Velocity
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same speed, same direction (in a straight line)
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Change in Velocity
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turning, slowing down, speeding up
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Acceleration
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Any change in velocity
Rapid Cahnge: big, fast acc Gradual Change: Small, slow acc Change in Velocity ------------- = a = ^v/t Time = final - intial ---------- Time |
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Change in Velocity
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Acc * time
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Distance
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average speed * time
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Distance (Position Graph)
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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 |
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Velocity Graph
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Graph:
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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) |
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Graph Patterns
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Flats----0
Curves----diagonal diagonal-----flats |
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Positive Acc
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speeding up (+) moving away (+)
slowing down (-) moving toward (-) |
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Negative Acc
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Moving towards (-) speeding up (+)
Moving away (+) slowing down (-) |
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Instantaneous Speed
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Speed at that exact moment
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Final Speed
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initial+ change in speed
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Change in Speed
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acc * time
final- initial -------- time |
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Free Fall
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Motion under the influence of gravity
- no air resistance ect. allowed - not necessarily falling down - all objects fall at the same rate (Galileo) |
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Acc due to Gravity
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g= 9.8 m/s2 = 10 m/s2
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d=1/2gt2
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-Falling from rest
-Not things that are thrown ex: - falling 2 times as long-- 4 Times as far |
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Science vs. Technology
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Science- way of knowing
Technology- way of doing |
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Science vs. Religion
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Science- Cosmic Order
Religion- Cosmic purpose |
