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42 Cards in this Set
- Front
- Back
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Physics
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*knowledge of cause and effect
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Matter
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*defined as anything that has mass and takes up space
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Natural law
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*a rul that tells you how or why something happens a particular way it does.
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Analysis
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*detailed thinking you do to interpret and understand what you observe.
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Macroscale
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Large enough to see.
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Parts of an experiment
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*must have a question.
*Independent variable *dependent variable *control variable |
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Scientific method
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*process used to conduct an experiement
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dependent variable
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*the variable that shows the effect of changes
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independent variable
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*variable that is the cause of change.
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control variable
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*variable that is kept the same.
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experiemental variable
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*the variable that is changed
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Graphing-"x" what does the "x" stand for??
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**independent variable, on the bottom axis of the graph.
*horizontal |
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Graphing-"y" what does the "Y" stand for???
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**dependent variable. always on the side of the graph.
**vertical line of the graph. |
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Mass
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**measured in kilograms. How much matter is in an object.
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matter
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Mass and volume.
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Inertia
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*property of an object that resists changes in motion.
*measure of mass. |
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What is S.I.?
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*system international
a. length-meter b. time-seconds c. volume-ml d. mass-kilograms |
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How is length measured in the S. I. system???
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*meter
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How is Time measured in the S. I. system??
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seconds
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How is volume measured in the S. I. system??
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Mililiters
*base unit of 10. |
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How is mass measured in the S. I. system??
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kilograms
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How is speed calculated?
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distance divided by time.
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How is the average speed calculated?
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total distance divided by total time
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Instantanous speed
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*speed now
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force
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meansured in newtons. N
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accerleration
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how fast verlocity is changing
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energy
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*a measure of a systems ability to change or create change in other systems.
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model
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an explanation that like the variables in a system throught cause and effect.
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measurement
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*tells how much
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distance
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that amount of space between two points
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length
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distance is measured in units of length.
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speed
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the distance something travels divided by the time is takes.
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constant speed
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means the same distance is traveled every second.
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Force
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is a push or pull or anything that has the ability to change motion.
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Newtons first law
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*states that objects tend to continue the motion they already have unless they are acted on by forces.
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Pounds
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*measuring the force of gravity acting on the object.
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Newton
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*metric unit of force
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Newtons second law
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*acceleration
*the amount of acceleration depends on both the force and the mass according to Newtons second law. *the greater the mass the small the acceleration. |
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acceleration
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the rate at which your speed increases.
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deceleration
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*motion slowing down.
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free fall
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*accelerating due to the force of gravity and no other forces are acting on it.
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acceleration due to gravity
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*objects in free fall on earth accelerate downward at 9.8 m/s2
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