[Free Registration/Login may be required to access all resource tools.] Overview of the types of energy, and how it can be stored and released.

[Free Registration/Login may be required to access all resource tools.] Overview of the types of energy and how it can be stored and released.

In this online textbook, students explore the phases of the moon, the moon's orbit, the origin of the moon, and the tides. Includes numerous inquiry-based activities.

A discussion and statement of an equation for orbital speed. An interactive JavaScript form allows the user to investigate the relationship between orbital height and orbital speed. A very good opportunity to practice and receive...

Learn about how Earth orbits the sun and how satellites orbit the Earth. Discover the different types of satellites such as GOES and POES and what they are used to monitor.

To those of us who live on earth, the most important astronomical object by far is the sun. This article explains how the motion of the sun through our sky cause day and night, the passage of the seasons, and earth's varied climates.

By the end of this section, you will be able to explain Earth's gravitational force, describe the gravitational effect of the Moon on Earth, discuss weightlessness in space, and understand the Cavendish experiment.

Third graders use their bodies to act out the motions of earth.

An investigation for students to understand plate tectonics by using models to see how motion and forces act on the plates. Students can use these models to see the connection between Newtonian Laws to Earth materials. Lesson plan...

Combined with aspects of circular motion, students discover that Kepler's third law follows directly from the law of universal gravitation. This unit will expand upon the conservation of energy principle for problems beyond the confines...

These hands-on activities are a great way for students to gain perspective on the relative sizes and distances of each planet, the relationship between the sun and Earth, and much more.

By the end of this section, you will be able to describe the right-hand rule to find the direction of angular velocity, momentum, and torque; explain the gyroscopic effect; and study how Earth acts like a gigantic gyroscope.

This paper presents the explanation behind the Zodiac signs. It discusses motions of celestial objects, the Plane of the Ecliptic, and the constellations of the Zodiac.

This video segment adapted from NASA uses animation to illustrate the properties of meteor showers and comets. Included is are visualizations of a comet's tail and of Earth passing through a debris stream left behind by meteoroids.

This site contains four main categories: Astronomy of the Earth's motion in space, Newtonian mechanics, the sun and spaceflight and spacecraft.

This site from Open Source Physics offers a file with a simulation of Kepler's theory of planetary motion, tested with the Earth rotating around the sun and another planet of the user's choosing. The download requires Java.

At this site from The Nobel Foundation you can read about the scientist who won the Nobel Prize in Physics in 1907, Albert A. Michelson (1852-1931 CE). Here, you can read a detailed biography which provides information on Michelson's...

Move the sun, earth, moon, and space station to see how it affects their gravitational forces and orbital paths. Visualize the sizes and distances between different heavenly bodies, and turn off gravity to see what would happen without it.

Atoms are very, very small. Atoms are so small that it is often said that there are as many atoms in a single grain of sand as there are grains of sand on all of the world's beaches - certainly a difficult thing to prove, but you get the...

A science simulation launches a projectile from the top of a mountain testing Newton's theory introduced in Principia.

This survey of the planets includes all the basics, size, mass, atmosphere, length of day, and the like. It features interactive activities and learning exercises and compares all of the planets in colorful tables.

A very detailed look at gravitational force and the many theories that have been put forward to try to explain it. Includes lots of illustrations.

This section of the Burke Museum's online exhibit on earthquakes and natural disasters focuses on the science of earthquakes. Topics that are covered include plate motion, heat, interior of the earth, and more.

Scientists have warned that as CO2 levels in the atmosphere rise an increase in Earth's temperature by even two degrees could lead to catastrophic effects across the world. But how can such a tiny, measurable change in one factor lead to...