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| to change an object’s speed |
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| box a system in which structure and behavior are not completely understood |
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| a mass at the end of a pendulum |
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| spring the type of spring used in a spring scale |
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| the sharing of ideas and solutions when working together |
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| to come into contact with another object |
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| when one object hits another object |
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| model an idea that describes or explains an object, a system, or an action that is not yet completely understood |
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| group agreement reached through observation, discussion, and the testing of ideas and evidence |
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| an idea which takes the form of a description or explanation of an object, system, or action that is not yet completely understood |
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| experiment a scientific test where only one variable can change |
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| variable any variable that is not allowed to change in an experiment |
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| the study of the structure and evolution of the universe |
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| a set of events or actions that repeats |
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| information collected and recorded as a result of observation |
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| variable what you find out as a result of doing an experiment |
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| the way something is put together |
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| a scientist who designs ways to accomplish a goal or solve a problem |
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| data used to support claims. Evidence is based on observations and scientific data. |
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| an investigation designed to find out how variables affect outcomes |
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| stick the flexible part of the flipper system which serves as the spring |
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| base the part of the flipper system that holds that flip stick in place |
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| system a model catapult used to exert a force on a mass |
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| a push or a pull that acts on an object |
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| a force acting between surfaces passing each other; friction acts to resist motion |
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| the natural force that pulls objects toward each other. On Earth, all objects are pulled toward the center of Earth. |
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| variable the variable you control the value of in an experiment |
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| energy energy that matter has because of its motion |
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| spring a type of catapult in which the release of energy causes any object resting on one end of the lever to fly into the air, like a diving board |
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| the weight or resistance that a simple machine moves |
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| the amount of material in something |
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| an explanation or representation of an object, system, or process that cannot be easily studied |
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| a measure of the motion of an object, using mass and speed |
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| a change in the position of an object |
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| trials an experiment that is conducted several times to improve the accuracy of the data |
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| the act of noticing the properties of an object or event with one or more of the five senses |
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| a scientist who studies the chemistry and geology of the ocean |
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| an arm with a mass on one end that is free to swing back and forth in response to gravity |
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| the length of time it takes a pendulum to complete a cycle |
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| energy energy that matter has because of its position |
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| to make an estimate or approximation about a future event based on information or experience |
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| an estimate of a future event based on data or experience |
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| something you can observe about an object or a material |
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| to update after reexamination |
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| a tube that moves liquid out of a container by gravity, provided the outflow end is lower than the intake end |
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| system the Sun, the planets, and other objects that orbit the Sun |
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| a substance capable of dissolving other substances |
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| the measure of an object’s change in position over time |
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| scale tool used to measure the strength of unknown forces in newtons |
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| a model established to compare the effect of changing a variable in an experiment |
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| two or more objects that work together in a meaningful way |
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| any method of modification of the natural world done to satisfy human needs or desires |
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| any device used to achieve a specific purpose |
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| of energy what happens when objects collide and energy is transferred from the object with more energy to the object with less energy |
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| graph a plot of the relationship between an independent variable on the x-axis and a dependent variable on the y-axis |
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| anything you can change in an experiment that might affect the outcome |
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| the measure of an object’s speed in a certain direction |
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| the use of a force to move an object |
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| the horizontal number line of a two-coordinate graph |
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| the vertical number line of a two-coordinate graph |
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