(6/6) The Empire And The Kingdom
The documentary explores the lives and struggles of Peter and Paul and the Christian revolution. (Video starts approximately in 37 A.D.)
Why Does Helium Change Your Voice?
Why does sucking on helium make your voice sound funny? See if this question can stump Dr. Charlotte Grayson. Helium is a colorless and odorless gas, and lighter than air. It changes your voice by altering the environment where sounds are formed. Run time 01:27.
Helium Is Lighter than Air Using Bubbles Demonstration
Demonstrating that helium is lighter than air with bubbles that rise. Watch David Richardson from the Institute of Physics demonstrate these fascinating, yet simple physics experiments that you can replicate in class. (1:30)
A four minute lecture that explains what helium is and how it reacts. Many great points are made and this is a very good overview for the study of this element.
Lithium battery rotating
This is simply a soundless QuickTime video of a lithium battery rotating. Might be useful if you simply want to show what a lithium battery looks like. To move the battery yourself, choose "QuickTimeVR Rotation" and hold down the control key while you click and drag over the picture. May take a little while to load.
Amusing introduction to beryllium
This introduction to the element beryllium (atomic number 4) covers its main uses and properties. It is very toxic, invisible to x-rays, expensive, and used in some high-tech equipment. Those working with beryllium are advised not to lick their fingers. Combines amusing demonstrations with talking to the camera by a wild-haired chemistry professor. Part of a series called Author(s):
An antlion builds a trap and waits...
Antlions live in the deserts of Africa and other warm, desert climates. They are verocious predators! The antlion larva in this video is shown building a sand trap and then capturing and defeating an ant.
Backyard Habitat: City Birds
Molly and Dave turn the backyard of a New York City brownstone into a
haven for city birds. They also visit Central Park to do some
The Black-Capped Chickadee
This video describes how to identify a Black-Capped Chickadee as well as the characteristics of the bird including location, behavioral habits, and diet. Run time 01:09.
The House Finch
This video describes how to identify a House Finch as well as the
characteristics of the bird including location, behavioral habits, and diet.
The House Sparrow
This video describes how to identify a House Sparrow as well as the
characteristics of the bird including location, behavioral habits, history, and diet.
From Embryo to Duckling
This video segment from NOVA: "The Shape of Things" charts the development of a duck embryo, from its earliest stages just after fertilization, through cell replication and differentiation, to the final stage, emergence from the protection of the eggshell. Closed captioning included. Run time 01:19.
The Canadian Goose
This video describes how to identify a Canadian Goose as well as the characteristics of the bird including location, migration, wingspan, and lifespan. Run time 01:18.
The Mallard Duck
This video describes how to identify a Mallard Duck as well as the
characteristics of the bird including location, behavioral habits, and diet. Run time 01:08.
Great Blue Heron
A great informational video on the great blue heron. This movie discusses the habitat needs of this bird such as tall trees for nesting and shallow water for hunting. You can see first hand a blue heron attempting to catch a baby alligator as well as their elaborate mating courtship. Run time 02:05.
This video gives a brief overview of soil horizons. Key vocabulary words include: soil profile, leaching, erosion, organic layer, humus layer, top soil, subsoil, and bedrock. Run time 04:34.
Forming Possessive Nouns
In this lecture, an instructor talks about how to use apostrophes to make nouns possessive. The teacher does provide some useful information, but the typed sentences she shows on the screen are not readable.
This brief video (which has no narration, but does have background music) has amazing images of volcanic lava. Get immersed in a volcanic landscape with bubbling lava, spewing eruptions, and colliding rivers of fire. Suitable for elementary, middle, and high school students.
Normal Force and Newton's Third Law
In this video, Sal Khan of Khan Academy, discusses the normal force counteracting the force of gravity. Mr. Khan uses computer software for demonstration. (04:44)
Antartic Food Web
This interactive game adapted from the Bigelow Laboratory for Ocean Sciences challenges players to build a food web, a complex model that shows how various food chains in an ecosystem are connected. Players must position the names of producers and consumers in the correct places in a diagram. The completed diagram reveals how energy flows through an Antarctic ecosystem and the relationships between predators and prey.