In this activity, learners explore the question "What is paper?" Learners discover the processes and materials required to make paper while experimenting with different recycled fibers and tools.
An introduction to parabolic mirrors, part 2. Created by Sal Khan.
An introduction to Parabolic Mirrors and Real Images. Created by Sal Khan.
Multiple resistors in parallel can be combined into a single equivalent resistor. Created by Willy McAllister.
This is a simulation of the particle theory of matter.
In this interactive activity from ChemThink, examine the basic properties of matter at an atomic level and consider how various atoms affect the way a substance behaves.
This interactive periodic table developed for Teachers' Domain provides detailed information about the chemical properties of elements and illustrates the electron configurations that determine those characteristics.
Explaining the photoelectric effect using wave-particle duality, the work function of a metal, and how to calculate the velocity of a photoelectron. Created by Jay.
In this video, David explains what a photon is and how to determine the energy of a photon. Created by David SantoPietro.
In this video, David (and surfer Dan) explain how to determine the momentum of a photon.
In this lesson the students will create mixtures and note the physical properties of each of the ingredients within.
A complete introduction to scientific investigation and the scope of physical science. Includes: states of matter, atoms, periodic table, chemical bonding, chemical reactions, carbon chemistry, chemistry of solutions, nuclear chemistry, motion, forces, Newton's Laws of Motion, work and machines, energy, waves, sound, electromagnetic radiation, visible light, electricity, and magnetism.
This 10-minute video lesson looks at Newton's First Law (Galileo's Law of Inertia).
In this activity, learners construct a device out of a piezoelectric igniter, like those used as barbecue lighters. Learners use the device to remotely start current flowing in a simple series circuit containing a small electric fan.
Watch the rubber bands vibrate on homemade guitars in this video segment adapted from ZOOM as cast members talk about pitch and demonstrate how to make a cereal box instrument.
This video segment, adapted from ZOOM, explores the different sounds that a simple drinking straw can produce when you cut the straw and blow into it.
This video segment, adapted from ZOOM, demonstrates how to use a drinking straw and a bottle full of water to make low- and high-pitched sounds.
This video segment adapted from A Science Odyssey uses animation and archival footage to provide an overview of the theory of plate tectonics.
The distribution of earthquakes and volcanoes around the world confirmed the theory of plate tectonics first proposed by Wegener. These phenomena also help categorize plate boundaries into three different types: convergent, divergent, and transform.
This module offers an introduction to the concepts explored by Alfred Wegener, Harry Hess, and others. It is the first in a series on plate tectonics.