Reviews the history of discovery as it relates to Earth, the moon, and the sun, looks at Earth's solar system, explains where stars come from and how they form, discusses Earth's gravity and rotation, and describes the moon's formation and orbit.
Explains the basics of heat, discussing how heat moves, why people sweat, how food and clothing can keep someone warm, how heat is measured, what role heat plays in life, and other related topics.
Teaches children about different types of gases, with information on how gases are used on a daily basis, how they move, how they impact the life cycle, how gases are used in the water cycle, and other related topics.
Explores the properties of matter in its solid and liquid states, covering such topics as volume, powders, liquid thickness, melting, freezing, and separating soluble solids.
Simple diagrams and easy-to-follow text explain various aspects of light, including different sources of light, how it travels, how the human eye sees light, what causes light to reflect, the link between light and color, and other related topics.
Explains how forces and friction work, providing information on the different types of forces, the role they play in daily life, the ways they are measured, and other related topics.
Introduces children to the concepts of circuits and conductors, explaining how they work and presenting simple experiments to help children understand their basic functions.
