Key Vocabulary for Sci Method Intro, Energy, and Force and Motion
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| hypothesis | A possible explanation about an observation that can be tested by scientific investigations and includes both independent and dependent variables.
example: The cotton t-shirt will dry the fastest compared to the wool, polyester, and denim shirts.
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| force | a push or a pull
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| newton | the unit used to measure the strength of a force
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| friction | a force between an object and the surface it is moving over (contact)
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| gravity | a force that pull objects toward each other as a result of their masses
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| net force | the combination of all forces acting on an object
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| speed | how fast an object is moving; the distance the object moves per unit of time; s=d/t
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| independent variable | The variable that is changed or manipulated by the scientist
Example: the type of mentos added to a Diet Coke Bottle
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| velocity | the speed at which an object travels in a given direction; for example: the storm is moving 25 km/h eastward
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| dependent variable | The variable that is measured by the scientist
Example: How high the soda spews up into the air
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| inertia | an object's resistance to change
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| Newton's 1st Law of Motion | law that states an object at rest will remain at rest, and an object that is in motion will keep moving (in a straight line) until acted upon by an outside force
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| Newton's 2nd Law of Motion | law that states an object's motion depends on its mass; force = mass x acceleration
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| Newton's 3rd Law of Motion | law that states that for every action there is an equal (in strength) but opposite (in direction) reaction
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| potential energy | the energy that is stored in an object or system
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| kinetic energy | the energy that an object has because it is moving
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| collision | the moment when two objects hit each other
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| mass | the amount of matter that makes up an object
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| matter | anything that has mass and takes up space
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| cause | an event or process that leads to a result or change
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| effect | a result or change that happens because of an event or process
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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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