Measuring Motion
Formulas and Calculations
Slow Motion
Acceleration
Anything
100
The number of centimeters in a kilometer.
What is: 100,000 cm
100
You can figure out this if you know the time a runner finishes a race and how long the race was.
What is: average speed
100
Scientists explanation of how the Earth's plates move very slowly in all different directions.
What is: plate tectonics
100
Measurements of acceleration are given in units of this.
What is: distance/time^2
100
Two reasons why the International System of Units (SI)/Metric System is so useful.
What is: convert easily and it's universal
200
Speed measurements are given in units of this.
What is: distance/time
200
An airplane that moves 50 meters in one second has a speed of this many m/h.
What is: 180,000 m/h.
200
Knowing this helps scientists calculate the average speed of a plate.
What is: How far the plate has moved (distance)
200
An object can accelerate in these 3 ways.
What is: speed up, slow down, and change direction
200
A reason why it's important to know the velocity of an object.
What is: velocity tells the direction an object is heading.
300
An object is in motion if it is moving relative to this.
What is: reference point
300
A car traveling at 25 m/s speeds up to 40 m/s in 15 seconds has this average acceleration.
What is: 1 m/s^2
300
A good unit of measurement to use when describing the movement of Earth's plates.
What is: centimeters or millimeters
300
Two things we know about an object if the line on a line graph is horizontal.
What is: moving at a constant speed and it is not accelerating.
300
Why it's important to use velocity instead of speed when you describe how a storm is moving.
What is: You know the direction of the storm.
400
To determine the speed of an object, you must divide distance by this.
What is: acceleration
400
A biker that finishes a 120 km trip in 3 hours has this average speed.
What is: 40 km/h
400
A plate that moves 5 mm in 100 days has this speed in mm/yr.
What is: 18.25 mm/yr
400
This is the formula for measuring acceleration.
What is: a = final velocity - initial velocity / time
400
The middle name of Mr. Soderquist (HINT: it begins with a "W")
What is: William
500
An object is in motion only if its distance from a reference point is this.
What is: changing
500
The trunk of a tree that is 50 cm thick and gets thicker 1 cm each year will be this thick in 50 years.
What is: 100 cm
500
One way we know that Earth's surface does not look the same as it did 250 million years ago.
What is: shapes and positions of Earth's plates have changed dramatically over time.
500
Two ways an object could be accelerating even at a constant speed.
What is: direction changes, moving in a circle (ex. Merry-Go-Round)
500
One example of how an object can appear to be in motion when it really isn't.
What is: A reference point is not stationary.
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