In the first video segment, we describe the fundamental postulate of statistical …
In the first video segment, we describe the fundamental postulate of statistical mechanics. The direct product notation we introduce in the second segment helps us to discuss the states available to a collection of many parts, which helps us, in turn, to derive the Boltzmann factor in the third segment. The fourth video segment explains how the Boltzmann factor helps us to calculate average properties for systems in thermal contact with large baths and introduces entropy (Greek letter sigma), free energy (F), and the partition function (Z).
I decided to do this activity as a fun way to get …
I decided to do this activity as a fun way to get my students engaged in the ever daunting physics unit in science 10. This activity was very easy to set up and I already had access to most of the materials at school. The basic idea of this was to create a launcher or sling shot with the materials you are given that will launch your army man the farthest. I gave each group 3 tries as sometime the launch didn’t go as planned. We marked the farthest launch and I had a prize for the winning group.
Even when we model the dynamics of the abundances of molecules inside …
Even when we model the dynamics of the abundances of molecules inside biological systems using calculus, it is important to remember that underlying behavior can be apparently random ("stochastic"). Even a deterministic system containing components moving in periodic ways can, at early times, support dynamics that appear disordered. The behavior of systems containing complicated collections of interacting parts can be difficult to predict with accuracy (chaos). Finally, systems can display stochasticity because the outcomes of measurements on quantum systems are indeterminate in a fundamental way. Random processes are modeled using Markov models.
This is a lesson about the motion of a coronal mass ejection, …
This is a lesson about the motion of a coronal mass ejection, also called a CME. Learners will calculate the velocity and acceleration of a CME based on its position in a series of images from the Large-Angle Spectrometric Coronagraph (LASCO) instrument on SOHO.
Today we’re talking all about fluid mechanics! We’ll look at different scales …
Today we’re talking all about fluid mechanics! We’ll look at different scales that we work with as engineers, mass and energy transfers, the no-slip condition, stress and strain, Newton’s law of viscosity, Reynold’s number, and more!
Students learn about contact stress and its applications in engineering. They are …
Students learn about contact stress and its applications in engineering. They are introduced to the concept of heavy loads, such as buildings, elephants, people and traffic, and learn how those heavy loads apply contact stress. Through the analysis of their own footprints, students determine their contact stress.
In this activity students add and subtract log distances on their Log …
In this activity students add and subtract log distances on their Log Tapes to discover that the corresponding numbers multiply and divide. This will lead them to an experiential understanding of the laws of logarithms.åÊThis is activity B2 in the "Far Out Math" educator's guide. Lessons in the guide include activities in which students measure,compare quantities as orders of magnitude, become familiar with scientific notation, and develop an understanding of exponents and logarithms using examples from NASA's GLAST mission. These are skills needed to understand the very large and very small quantities characteristic of astronomical observations. Note: In 2008, GLAST was renamed Fermi, for the physicist Enrico Fermi.
This is a lesson about the electromagnetic spectrum. Learners begin by arranging …
This is a lesson about the electromagnetic spectrum. Learners begin by arranging a set of picture cards; in the discussion afterwards, this activity is related to the electromagnetic spectrum as an arrangement of energy waves. Next, using a clothesline to model a logarithmic scale, they add in the electromagnetic spectrum. Finally, learners conduct several simple tests to detect other types of radiation. This activity requires access to a sunny outdoor location and the use of ultraviolet light-sensitive beads.
In this activity about spectroscopy, learners build a spectroscope, learn about graphing …
In this activity about spectroscopy, learners build a spectroscope, learn about graphing spectra, and then identify elements in gas tubes using their spectra. The activity concludes as learners graph the spectra of different materials. Essential materials required for this activity include spectrum light tubes, the power source for spectrum light tubes, and diffraction grating material.
In this activity about magnetic fields and their relation to the Sun, …
In this activity about magnetic fields and their relation to the Sun, learners will simulate sunspots by using iron filings to show magnetic fields around a bar or cow magnet, and draw the magnetic field surrounding two dipole magnets, both in parallel and perpendicular alignments. Finally, learners examine images of sunspots to relate their magnetic field drawings and observations to what is seen on the Sun.
In this activity, students are reminded that the Universe is made up …
In this activity, students are reminded that the Universe is made up of elements and that the heavier elements are created inside of a star, as they learned in the "Elements and You" activity. They are introduced to the life cycle of a star and to the way in which a star's mass affects its process of fusion and eventual death. Students discuss the physical concept of equilibrium as a balancing of forces and observe an experiment to demonstrate what happens to a soda can when the interior and exterior forces are not in equilibrium. An analogy is made between this experiment and core collapse in stars, to show the importance of maintaining equilibrium in stars. Finally, students participate in an activity which demonstrates how mass is ejected from a collapsed star in a supernova explosion, thereby dispersing heavier elements throughout the Universe. This activity is part of a series that has been designed specifically for use with Girl Scouts, but the activities can be used in other settings. Most of the materials are inexpensive or easily found. It is recommended that a leader with astronomy knowledge lead the activities, or at least be available to answer questions, whenever possible.
This toolkit includes PowerPoints and scripts, videos and accompanying activities and handouts …
This toolkit includes PowerPoints and scripts, videos and accompanying activities and handouts about supernovae. Following are specific items in the kit: Supernova in the Lives of Stars PowerPoint and Script; Let's Make a Supernova (participants imagine themselves inside a large star at the end of its life, just as it is about to go supernova); Nuclear Fusion (a simple and engaging activity explains nuclear fusion and how radiation is generated by stars, using marshmallows as a model); Supernova Star Maps (allow visitors to experience finding stars in the night sky that will eventually go supernova); A Universe Without Supernovae (an active game to illustrate the value of supernovae in the universe); and Lives of Stars (an activity and handout about the lifecycle of stars and when supernovae happen.)
Students are presented with the question: "Why does a liquid jet break …
Students are presented with the question: "Why does a liquid jet break up into droplets?" and introduced to its importance in inkjet printers. A discussion of cohesive forces and surface tension is included, as well as surface acting agents (surfactants) and their ability to weaken the surface tension of water. Students observe the effects of surface tension using common household materials. Finally, students return to the original question through a homework assignment that helps them relate surface tension and surface area to the creation of water droplets from a liquid jet.
Students explore how pendulums work and why they are useful in everyday …
Students explore how pendulums work and why they are useful in everyday applications. In a hands-on activity, they experiment with string length, pendulum weight and angle of release. In an associated literacy activity, students explore the mechanical concept of rhythm, based on the principle of oscillation, in a broader biological and cultural context in dance and sports, poetry and other literary forms, and communication in general.
This is an activity about the properties and characteristics of Earth‰Ûªs magnetic …
This is an activity about the properties and characteristics of Earth‰Ûªs magnetic field as shown through magnetometer data and its 3D vector nature. This resource builds understanding of conceptual tools such as the addition of vectors and interpreting contour maps displaying magnetic signature data. Learners will make several paper 3D vector addition models, watch podcasts on how to analyze magnetometer data, and employ 3D vector plots to create a model of the 3D magnetic field in the location of the magnetometer closest to their town. This is a multi-step activity with corresponding worksheets for each step. The activity uses data from the THEMIS (Time History of Events and Macroscale Interactions during Substorms) GEONS magnetometer, and requires the use of a computer with internet access and speakers, 2-inch polystyrene balls and bamboo skewers. This is activity 16 from Exploring Magnetism: Earth's Magnetic Personality.
This lesson plan focuses on the concepts of atomic number, mass number, …
This lesson plan focuses on the concepts of atomic number, mass number, isotope, and nuclear atom. A student quiz is included as an assessment instrument. This resource is from PUMAS - Practical Uses of Math and Science - a collection of brief examples created by scientists and engineers showing how math and science topics taught in K-12 classes have real world applications.
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