Gravity Cruiser Design Challenge Glossary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Abrupt Stop | When a gravity cruiser comes to a stop because its string is attached to the axle and has been pulled taut
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| Ballast | Extra weight added to the chassis as necessary to keep the cruiser's wheels in contact with the ground
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| Axle Winds | The number of times the string can be wound about the drive axle as the weight is lifted to its highest position; the winds are a function of axle diameter and the distance between the weight's highest and lowest positions
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| Calculated Distance | The distance the cruiser is expected to travel, assuming the string unwinds from the axle completely and the cruiser does not coast beyond that point
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| Chassis | The body of the gravity cruiser, consisting of axles, wheels, and base platform
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| Circumference | The distance around a circle
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| Coasting Stop | When a gravity cruiser gradually slows to a stop after its string has become completely unwound and is disconnected from the axle
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| Diameter | The distance across a circle, measured through its center
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| Drive Axle | The axle around which the string is wrapped
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| Force | A push or pull on an object
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| Friction | Rubbing between two surfaces, which causes energy loss
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| Fulcrum | The pivot point around which a lever rotates
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| Hypothesis | An untested idea about how things work
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| Inertia | The tendency of an object to resist changes in motion
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| Kinetic Energy | The energy an object has due to its motion
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| Lever | A bar that pivots about a fixed point (a fulcrum)
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| m | metric unit for the meter
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| Moment Arm | The magnitude of force applied to a rotational system at a distance from the axis of rotation (the fulcrum)
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| Momentum | The product of mass and velocity; the more a gravity cruiser has when the string disconnects from the axle, the farther it will coast before stopping.
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| Pi | The ratio of the circumference of a circle to its diameter; which is approximately 3.14
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| Potential Energy | The energy stored in an object
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| Prototype | An experimental version of a design or product
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| Torque | A turning or twisting force
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| Travel Distance | The actual distance a gravity cruiser travels during a trial without extra pushes or extra help ( compared with calculated distance)
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| Troubleshooting | The process of systematically determining reasons for malfunctions and finding ways to fix them
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| Weight | (In this case) The pennies attached to the lever; the magnitude of the weight is equal to the mass of the pennies multiplied by the acceleration of gravity
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
salleyj
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