"Why does a magnet pick up a paper clip but not a leaf or a penny? How can the whole world be a magnet? Follow the step-by-step instructions about how to make your own magnet, and then find out for yourself what makes a ...
A simple explanation of how the rotation of the earth causes night and day.
Explains the construction and purpose of the International Space Station and the life of the astronauts on board.
Explains how the water cycle leads to different types of weather patterns.
The sun gives us warmth and light. But did you know that the sun also gives us the seasons?
An introduction to gravity, including what gravity is and how and why it pulls everything toward the center of the earth.
Imagines sights and experiences on a moon visit.
Explains basic facts about the Big Dipper, including which stars make up the constellation, how its position changes in the sky, and how it points to the North Star.
An introduction to earthquakes, including what causes them, how they are measured, where they are most likely to occur, and what to do if one happens.
Discusses the properties of light, particularly its source in heat.
Introduces the way in which the sun's relationship to the earth is responsible for seasonal changes.
Introduces the solar system and its nine planets. Includes directions for making two models, one showing relative sizes of the planets and the other their relative distances from the sun.
Describes the sun and how it provides the light and energy which allow plant and animal life to exist on the earth.
Discusses some of the lesser-known astronomical phenomena such as meteorites, asteroids, tektites, zodiacal light, solar wind, and cosmic rays.
Describes how magnets work and includes instructions for making a magnet and a compass.
Discusses volcanoes, what causes an eruption, and the warning signs.