Jane Goodall had a passion to learn about animals. Readers will learn all about her adventurous life among chimpanzees and other primates in this inspiring nonfiction biographical title. Children will be fascinated by the vibrant images, stimulating facts, and accessible glossary that will assist in vocabulary improvement.
Find out what sets the human life cycle apart from other living things in this fascinating, informative nonfiction reader. With intriguing facts, informational text, and vibrant photographs, children will be introduced to the biological phases of our life cycle--from infancy to adulthood.
Journey to Africa to explore the world of the grasslands! Readers are taken on an adventure through the grasslands to learn about the various animal and plant life and grassland conservation in this fascinating nonfiction book that features striking photographs and riveting facts. Even the most reluctant of readers will be captivated as they move from cover to cover.
There is so much to explore in the Amazon! Readers are taken on an adventure through the Amazon rainforest to learn about the lush plants and beautiful animals, deforestation, and rainforest conservation in this fascinating nonfiction reader that features striking photographs and riveting facts.
Death Valley is one of the hottest and driest deserts of the world! Readers are taken on an adventure through Death Valley to learn about the plants and animals that survive in this dry, hot desert landscape in this engaging nonfiction title. Featuring vivid photographs, informational text, and riveting facts about desert ecology, readers will be fascinated from beginning to end!
Discover the world of mammals in this delightful nonfiction title! Readers will learn all about different mammals--from primates to marsupials, and rabbits to whales, even omnivores and herbivores. Featuring vivid photos and charts, clear text, and stimulating facts, this book will have children eager to learn all they can about mammals!
A cactus wren nests in a desert cactus. A zebra grazes on a grassy plain. A cougar crouches between thick trees in a forest. Deserts, grasslands, and forests are all biomes. A biome is an area with a certain type of climate with unique plants and animals that have adapted to its environment. Featuring TIME For Kids content, this nonfiction reader introduces students to five of Earth's biomes: ocean, forest, desert, grassland, and tundra. This high-interest title includes detailed photos, stimulating facts, and clear, informational text to engage students as they build their critical literacy skills. The book includes text features such as bold font, captions, a table of contents, a glossary, and sidebars to increase understanding, improve academic vocabulary, and prompt critical thinking. This text prepares students for college and career and is aligned with state and national standards. Keep grade 2 students engaged from cover to cover with this intriguing reader!
Atoms are the building blocks of everything around us. Inside the atom is the nucleus, with protons and neutrons. But there are even smaller particles that make up protons and neutrons, called quarks. Everything that scientists know about atoms is part of the Atomic Theory, which originated in ancient Greece, but continues even today.
A book on the incredible life and work of Jane Goodall. Reads at a level of 3.9 with a word count of 1298.
There are many causes for different kinds of weather, but the biggest factors are heat, water, and wind. For example, the reason why one type of precipitation falls instead of another is usually because of the air temperature. Today, there are many scientific instruments that help predict the weather. These instruments help people prepare for storms before they happen.
Long ago, it was believed that the gods ruled the weather, because it was a mystery to people. No one knew how to measure heat, cold, or wind. Galileo Galilei invented the thermometer in the 1500s. Soon after, the first barometer was invented to measure air pressure. In other countries, the Celsius scale is used, named after astronomer Anders Celsius. Today, meteorologists use newer tools like weather satellites and radar to make weather predictions.
The water cycle is like a circleâ€”it has no beginning and no end. When the sun heats ocean water, it evaporates and forms clouds in the sky. When these particles get big enough, they can fall to Earth as precipitation in the form of rain, sleet, snow, or hail. When water hits the ground, it can change to liquid, soak into the ground, or run off and form streams or rivers. But it always makes its way back to the ocean, where the cycle â€œbeginsâ€ again.
Landforms are features on the earth's surface that are made naturally. Mountains, plains, and plateaus are all examples of landforms. The study of landforms is called geomorphology. Scientists can learn about the past and even predict future changes by studying landforms. Today we can take pictures of landforms from airplanes and satellites.
We live on Earth's crust, but there are other layers beneath the crust. They are the mantle and the outer and inner core. In 1915, scientist Alfred Wegener said that about 200 million years ago, Earth once had a single landmass. Hot, molten magma under the surface of the crust pushed the plates apart at a crack in Earth's crust and, eventually, the landmass was split apart and continents were formed. Wegener's work led to the study of plate tectonics.
Earth is made up of atmosphere that protects us from the sun and contains our air supply. The next part is the hydrosphere, which is all the water on the planet. The third is the geosphere, the rocks. All three parts are closely connected. If we do not take care of one part of Earth, such as the ocean, we hurt the entire planet. Scientists all over the world are working to find ways to reduce pollution and make our Earth healthier.
Everything around us is made up of matter. Understanding how matter can change properties and how the position of molecules determines the state of matter helps explain everything from energy to why certain substances have chemical reactions when mixed together.
Energy is all around usâ€”humans use energy, machines use energy, and heat and power use energy. Energy is found in many forms, and there are many energy sources. People are working to develop new, renewable sources of energy for future generations.
Forces can't be seen, but without them, nothing around us would happen! A force is a push or pull that usually causes movement. Friction is a force that opposes motion and slows things down or stops them. Famous scientist and mathematician Sir Isaac Newton wrote the rules about forces and motion.
Light and sound are two of the most important ways to understand the world around us. The sun is Earth's main source of energy and light. Light bounces off objects and travels to our eyes. Our eyes and brain work together to translate that light into what we see while our ears pick up sound vibrations and translate them into meaningful messages.
There are 90 different elements, like the oxygen that we breathe, that can be found in nature. When two or more elements combine, they are held together by a chemical bond and form a compound. In 1869, chemist Dmitri Mendeléev organized the elements into a chart that is known as the Periodic Table of Elements.
Cells are the building blocks of life. According to Cell Theory, all living things are made of cells; cells are the basic unit of life; and all cells come from other cells. The nucleus of a cell has chromosomes made of DNA, which make each individual unique.
Many organisms are multicellular, which means they have many cellsâ€”even trillions! The cells work together to help the organism do things such as create energy, reproduce, and get rid of waste.
For many centuries, scientists believed there were only two kingdoms, or groups of living things: plants and animals. But Anton van Leeuwenhoek made microscopes in the 17th century that also proved there are microorganisms, or microbes. Microbes can help keep people stay healthy, but some also can make people sick.
All plants need sun, water, air, and food to grow. Plants are anchored to the ground by their roots, which take in nutrients from the soil. Stems and stalks hold up plants and give them shape, and also hold the plumbing system of the plant. Leaves are the place where food is made for the plant. Many plants make crops for us to eat.
Plants and animals that need one another in an environment form an ecosystem. All ecosystems have energy pyramids that show the exchange of energy from one food source to another. Biomes are areas of the Earth that have their own climate and characteristics. Ecosystems all over the world are in danger due to pollution, hunting, and other factors. By conserving water, recycling, and reducing pollution, we can help protect Earth's ecosystems and biomes.