Richard Born Northern Illinois University Operations Management and Information Systems Introduction The “Spectrum of Atomic Hydrogen,” Experiment 21 in Advanced Physics with Vernier–Beyond Mechanics, is a classical investigation of the Bal...

Doug Balmer, a chemistry teacher from Warwick High School in Lititz, Pennsylvania, designed a lab experiment for his students that investigates the absorption and emission of light using a spectrophotometer. The experiment, entitled "Light Lab: Stud...

An evolutionary tree shows the evolutionary lineages of different species over relative time. Evolutionary trees, (also called cladograms), can be based on many different types of data. The traditional way of constructing evolutionary trees was to lo...

In this experiment, Temperature Probes are placed in various liquids. Evaporation occurs when the probe is removed from the liquid's container. This evaporation is an endothermic process that results in a temperature decrease. The magnitude of a temp...

In this experiment, you will discover some properties of strong electrolytes, weak electrolytes, and non-electrolytes by observing the behavior of these substances in aqueous solutions. You will determine these properties using a Conductivity Probe. ...

The rural town of Rancho Caliente has been experiencing a drought for several years. This community, which has relied on the local river and reservoir, is having to think creatively as it has seen its water supply dwindle as the reservoir water level...

The automatic response of a muscle to a stimulus is called a reflex. The patellar reflex results from tapping the patellar tendon below the knee with a reflex hammer. This causes contraction of the quadriceps muscle and extension of the leg. Stretchi...

Maintaining physical balance is a complex task mediated by input from multiple sensory input sources. While the vestibular system is responsible for detecting the location and movement of the head in three dimensional space, input from proprioceptors...

One of the homeostatic mechanisms of the human body serves to maintain a fairly constant blood pressure. Major determinants of blood pressure are heart rate, amount of blood pumped with each beat (stroke volume), and the resistance of the arterial sy...

The goal of this activity is for students to apply physics principles in order to effect a collision between a projectile and a target. This type of activity is sometimes called a Practicum and is generally scored on success (hitting the target) or f...