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# Labs

Arbor Scientific introduces a growing collection of science labs, activities and experiments for physics and physical science teachers. Science labs are designed to cover important key concepts, and may be downloaded and used in your classroom. Whether you're a teacher or home schooling parent, these labs are designed for you. Science labs include teacher's notes with a brief concept review, tips, applicable National Science Content Standards, and a list of equipment. The student pages are ready to reproduce and use right away.

• ## Current Electricity

Posted on January 1, 2011 by Buzz Putnam

Students will construct series and parallel circuits with both bulbs and resistors. The lab begins with bulbs, but since taking measurements with bulbs can often be imprecise, the measurement portion of the lab uses resistors and a DC power supply.

This post was posted in Labs, Electricity & Magnetism and was tagged with electricity, circuits, current electricity, DC power supply, lab 95

• ## Racing Marbles: The Race

Posted on January 1, 2011 by Arbor Scientific

Two marbles will roll simultaneously on different paths, starting and ending at the same height. Students will predict and then observe the results of a “race” between the two marbles, and explain the results. Quantitative analysis of the motion will be done with photogates.

This post was posted in Labs, Motion and was tagged with racing marbles, velocity, ramps

• ## Observing Acceleration with an Accelerometer

Posted on January 1, 2011 by Arbor Scientific

Use a liquid accelerometer to observe different types of motion and classify the acceleration. Students will observe straight-line motion (constant velocity and constant acceleration), and then take their knowledge of the water’s behavior to more complex circular and pendulum motion. They will discover the centripetal (toward the center) acceleration of circular motion, and the acceleration toward equilibrium of a pendulum system.

This post was posted in Labs, Motion and was tagged with acceleration, circular motion, accelerometer, centripetal, straight-line motion

• ## Acceleration Due to Gravity

Posted on January 1, 2011 by Cary Busby

The first experiment will use very basic equipment to measure an important quantity, the acceleration of an object in freefall. This is also known as the acceleration due to gravity, or g. The acceleration due to gravity is nearly the same at all points on the earth’s surface, 9.8 m/s2. You will compare your result to this accepted value. The second experiment will use a data-logger and photogates to measure the acceleration due to gravity. The “picket fence” has been used since photogates were developed to measure acceleration. The “pickets” block the photogate in sequence, giving a series of velocity readings. Using the velocities and the times between those velocities, the data-logger (or the student) can calculate the acceleration of the picket fence. The third experiment will use a data-logger and motion sensor (or sonic ranger) to measure the acceleration due to gravity.

This post was posted in Labs, Motion and was tagged with acceleration, acceleration due to gravity, gravity, freefall

• ## Factors Affecting Frequency

Posted on January 1, 2011 by Arbor Scientific

Two experiments. Choose one. In the first, students are guided through the process of testing 3 variables; mass, length, and amplitude; to determine which affects the frequency of a simple pendulum. In the second, students use inquiry and experimental design to test the same variables.

This post was posted in Labs, Motion and was tagged with mass, pendulum, frequency, periodic motion, length, amplitude

• ## Graphing Pendulum Motion

Posted on January 1, 2011 by Arbor Scientific

Students predict and then measure, using a motion sensor, the changing position, velocity and acceleration of a simple pendulum. Graphing the motion leads to a discussion of the total force on the pendulum at different points in its motion.

This post was posted in Labs, Motion and was tagged with acceleration, periodic motion, graphing pendulum motion

• ## Physical Pendulum

Posted on January 1, 2011 by Arbor Scientific

A pendulum with its mass spread throughout its length is called a physical pendulum. A typical clock pendulum is an example. Students will observe a physical pendulum and measure its period, and then construct a simple pendulum with the same period. They will see that a physical pendulum acts as if its mass is concentrated at its center of mass.

This post was posted in Labs, Motion and was tagged with pendulum, periodic motion, physical pendulum

• ## Simple Pendulum

Posted on January 1, 2011 by Arbor Scientific

Students will test two variables, to determine their effect on the pendulum’s period. Just as objects with different masses accelerate in free-fall at the same rate, changing the mass of a simple pendulum will not change its period. Changing the length of the pendulum does effect the period, with shorter pendulums having shorter periods.

This post was posted in Labs, Motion and was tagged with periodic motion, simple pendulum, variables

• ## Ticker Tape Motion

Posted on January 1, 2011 by Buzz Putnam

The ticker tape timer works by making dots on a paper tape at equal time intervals (approximately every 0.1s in this experiment). It is an excellent way for beginning physics students to experience the measurement of motion. Students will record and graph the motion of a car that moves with constant acceleration. Results of this lab are typically very good. The velocity vs. time graph will be a straight line with positive slope, where the slope is equal to the car’s acceleration. The position vs. time graph will be a parabola.

This post was posted in Labs, Motion and was tagged with acceleration, spark timer, ticker tape, Galileo, Incline plane, measurement of motion

• ## Car & Ramp: Speed and Acceleration

Posted on January 1, 2011 by Cary Busby

This experiment will use photogates to find the speed and acceleration of a car rolling down a ramp. Photogates use a single beam of ultraviolet light which goes from one arm of the gate into a receiver in the other arm. A data logger connected to the photogate will record the time that the beam is blocked by an object passing through the gate. Photogates allow us to accurately measure times that would be too short to measure with a stopwatch.

This post was posted in Labs, Motion and was tagged with speed, acceleration, car ramps

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