- Science (89),
- Social Studies (3)
How Fossils Help Us Learn About the History of... (2:02)
A CHAPTER FROM: Fossils: Windows Into the Past
Fossils can provide important clues about the history of the Earth. For example, fossils of ocean-dwelling organisms can be found in rocks that are now far from any oceans, indicating that these areas were once under water. Fossils also provide...
- 6-8Grades 6-8
Closed Captioning- Curriculum Explorer
Earth Science, the Basics: Earth's Geologic History (15:31)
Earth's history is too long for human timescales, so scientists use geological time. Earth's history is studied using fossils, and divided into four major eras: the Precambrian, the Paleozoic, the Mesozoic, and the Cenozoic.
- 6-8Grades 6-8
History of the Earth's Magnetic Field (2:10)
A SECTION FROM: Understanding Magnetism
This section includes interviews with scientists who work in Death Valley, California. They are able study the Earth's rock layers to learn the history of the Earth's magnetic field, magnetic alignment, and the magnetic field reversal.
- 6-8Grades 6-8
- Curriculum Explorer
Earth's History (1:35)
A CHAPTER FROM: Natural Phenomena: Rocks Fossils and Earth History
It is difficult for humans to fathom the age of the earth. Learn how the earth formed and the changes that occurred throughout its history.
- 6-8Grades 6-8
- Curriculum Explorer
The History of the Earth (2:53)
A CHAPTER FROM: The Geology of the Earth: Of Forces, Rocks, and Time
The Earth has changed dramatically since it's formation. Many things continue to change the shape of the Earth: geothermal activity, volcanoes, erosion, and weathering.
- 6-8Grades 6-8
- Curriculum Explorer
Elements of Earth Science: Rocks, Minerals, and Soils (30:00)
Examine ideas about how the Earth has been shaped. Learn about the rock cycle and the three main type of rocks. Investigate how fossil fuels are formed and the impact that burning them has on the environment. And explore the different types...
- 6-12Grades 6-12
The History of the Earth (4:31)
A CHAPTER FROM: Elements of Earth Science: The Planet Earth
Earth formed when gravity pulled galactic dust and gas into a core about 4.6 billion years ago.
- 6-12Grades 6-12
Our Changing Earth (54:00)
This program investigates the restless forces that lurk beneath the ground we walk on. Four segments report on geologists' theories and findings around the world concerning how the dinosaurs became extinct, and how poor structural planning...
- 6-8Grades 6-8
- Curriculum Explorer
Earth Science: History of the Earth (20:00)
Things have changed a lot for planet Earth in the past 4.6 billion years. Once a lifeless ball of magma, Earth has transformed many times, and the life that appeared some 3.8 billion years ago continues to change along with it. And Earth is...
- 6-12Grades 6-12
- Curriculum Explorer
Earth Science: Rocks and Minerals (20:00)
Solid as they may seem, rocks are constantly being eroded and reformed in a process called the rock cycle. Nowhere is the geologic history of Earth made plainer than in the Grand Canyon, where rock layers offer us clues to life over the past...
- 6-12Grades 6-12
- Curriculum Explorer