Scientists have discovered that stars are not equal. They vary in size and color. Variable stars change in brightness over the course of hours, days, weeks, or years. Reading Essentials in Science.
This book introduces habitats that exist along rivers and looks at the plants and animals that live there. Reading Essentials in Science.
This book explains how glass has been made from the same materials for thousands of years. Reading Essentials in Science.
What goes up must come down--all because of gravity. This book discusses the universal force of gravity. Reading Essentials in Science.
This book explores humankind's journey into space, from the first telescopes to the International Space Station. Reading Essentials in Science.
This book introduces the various habitats in the desert and looks at the harsh environments that the plants, animals, and people face every day. Reading Essentials in Science.
This book takes a look at the life cycles of plants and animals, including the key events and changes a living thing goes through in its lifetime. Reading Essentials in Science.
This book is an introduction to the concept of light energy, discussing its forms and the laws that govern it. Reading Essentials in Science.
This book takes a scientific look at erosion. Reading Essentials in Science.
This book explains the causes and laws of motion, magnetism, centripetal force and gravity. Reading Essentials in Science.
This overview of electricity includes electricity in nature, current electricity, battery power, and how various types of electrical circuits work. Reading Essentials in Science.
This book discusses what fossils are and where and how they are formed. Reading Essentials in Science.
The Earth moves. The ground moves. Air and water move. All of this movement brings change to the Earth and its inhabitants. his book explains the different movements that effect Earth, including its movement in space and continental drift. Reading Essentials in Science.
This book explains what causes earthquakes, what happens during an earthquake, and how to prepare for one. Reading Essentials in Science.
This book describes the physical characteristics common to all fish and highlights the differences among various species. Reading Essentials in Science.
Pressure, buoyancy, surface tension, friction, and viscosity are forces at work in fluids. Reading Essentials in Science.
Heredity is the passing of traits from one generation to the next through genes. Genetics is the branch of science that studies heredity. Reading Essentials in Science.
All life depends on the layers of gases that surround the Earth. This book explains the importance of the atmosphere for life on Earth, discussing the gases that make up the air, water vapor in the atmosphere, air pressure and movement, the layers of the atmosphere, and global warming. Reading Essentials in Science.
This book takes a scientific look at different energy sources. Reading Essentials in Science.
This book takes a scientific look at weather forecasting. Reading Essentials in Science.
This book is an introduction to the concept of energy discussing its forms and the laws that govern it. Reading Essentials in Science.
The complex processes that go on inside cells keep all living things alive. Reading Essentials in Science.
All living things are made of cells. These microscopic building blocks of life grow, react to changes in the environment, change nutrients into energy, and reproduce. Reading Essentials in Science.
This book explains what matter is, if it is solid, liquid, or gas, and how it can be classified. Reading Essentials in Science.
Jellyfish, sea anemones, and corals are members of the stinging cnidarian family. Flatworms, roundworms, and earthworms are three major types of worms. Reading Essentials in Science.
