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34 Cards in this Set
- Front
- Back
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motion
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the state in which one object's distance from another is changing
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reference point
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a place or object used for comparison to determine if an object is in motion
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meter
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basic SI unit of length
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speed
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the distance the object travels in one unit of time
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constant speed
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if an objects' speed does not change it is in constant speed
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average speed
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if speed is not constant, you divide total distance by total time to get average speed
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velocity
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the speed and direction of an objects motion
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slope
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steepness/slant of a line on a graph
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run
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horizontal difference between two points
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rise
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vertical difference between two points
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acceleration
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the rate at which velocity changes
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linear
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term used to describe a relationship between variables whose graph is a straight line
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non-linear
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term used to describe a relationship between variables whose graph isnt a straigt line
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position
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variable given in relation to origin
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origin
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place where position equals 0
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are position and distance similair ?
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yes but not the same
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speed
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describes how quickly something moves from one place to another
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speed equation
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R=D/T
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distance equation
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D=RxT
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time
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T=DxR
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instantaneous speed
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the actual speed an object has at any moment
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y axis is always...
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position
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x axis is always......
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time
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60 sec =
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1 minute
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60 min=
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1 hr
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24 hr
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1 day
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m/sec to m/h
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m/s times 2.24
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km/h to m/h
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km/h times 0.62
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how "fast " are you moving as you are reading this sitting still?
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30 km/s because the earth is spinning that fast
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why is velocity an important factor to know when a hurricane is approaching?
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because velocity tells you the speed and DIRECTION.
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what does the upper layer of the earth consist of
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more than a dozen major plates
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what do you call earth's upper layer pieces?
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plates
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how do scientists explain how land masses have changed over time
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different scientists study specific plates help to predict and tell about the past
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how fast do earths plates move each year
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5 cm/ year
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