Real Science-4-Kids

The octopus is a type of mollusk found in oceans. The body plan of this cephalopod is described and illustrated. Diet, movement, intelligence, and many other interesting characteristics of octopuses...

A solar system contains a star and the planets and other objects that orbit it. Our solar system has 8 planets - including Earth - moons, asteroids, and comets organized into an inner and outer solar...

A planet is an object in space that orbits a star, is spherical, and is big enough to have its own gravity. Earth is one of 8 planets that orbit the Sun. There are two different types of planets...

Reptiles are animals that have skin covered in scales. They keep their body the right temperature by lying in the sun or in the shade. Most lay eggs, while others give birth to live babies. Turtles,...

Sea jellies are soft-bodied animals living in oceans around the world. They have different shapes and sizes and swim by moving water in and out of their body. Some use tentacles to catch food and...

Sea stars are in a group of animals called echinoderms. They live in salt water and have spiny skin, 5 or more arms, a flat body with mouth and tube feet on the underside, and an eye on the tip of...

Sharks are fish and live and swim in water. The skeleton is made of light and flexible cartilage. Sharks range in size from very small to huge. Some lay eggs and some have live births. Sharks don't...

Snail: a type of mollusk that has a foot (a large muscle used for moving), eyes on the tips of eyestalks, a toothed tongue called a radula, and a spiral shell. It moves slowly, leaving a trail of...

Energy causes air molecules to move slightly back and forth, causing a sound wave. The more energy, the bigger the wave, the louder the sound. The tympanic membrane in the ear picks up the motion of...

Young readers discover that sponges are soft-bodied animals that live in oceans and fresh water. Sponges can be very small or very big and come in different colors and shapes. Some sponges are used...

A star is an object in space that emits heat and light energy when hydrogen atoms combine to make helium. Stars are different sizes and give out different amounts of light. Several significant stars...

Super Simple Science Experiments Laboratory NotebookAuthor: Rebecca W. KellerPublisher: Real Science-4-KidsPublication Date: Oct 08, 2020Number of Pages: 134 pagesLanguage: EnglishBinding:...

The atmosphere is the part of Earth that contains the air we breathe. It extends 60 miles (97 km) above the surface of Earth and is made up of different gas molecules. (Molecules and atoms are...

The geosphere has layers: crust, mantle, and core. Volcanoes, earthquakes, erosion, glaciers, and animals make big and small changes to the geosphere. Energy resources come from the geosphere. Rock...

The hydrosphere is made up of all the water on Earth. Water exists in three forms-liquid, solid, and water vapor-and changes from one form to another. Water moves around Earth in the water cycle in...

The Moon is spherical and much smaller than Earth. It is made of rocks and minerals, like Earth, but has very little air and no liquid water but some ice. The Moon doesn't make its own light but...

The squeezing of rocks and minerals deep in the Earth makes them get so hot that they melt to form magma. When magma pushes through a weak spot in Earth's solid crust, a volcano occurs. Magma that...

Whales are mammals that live only in water. Are in a group called cetaceans; further grouped by having teeth and without teeth. Whales without teeth have baleen bristles that hang down from the top...

Astronomy is the study of stars and other objects in space. Ancient peoples studied the sky, named stars and groups of stars, and created calendars. Astronomers use telescopes, space telescopes, and...

Explore basic concepts of biology-living things eat, grow, and move; plants make their own food; living things are found in different environments; biologists study living things. 24 pages. Reading...

Exercise scientists study how the body works to perform different tasks such as jumping, running, climbing, and lifting heavy things. How the body works, how exercise changes the body, how the body...

Worms are animals with long bodies and no legs. They live on land, in the ocean, and in other animals. There are segmented worms, roundworms, and flatworms. Worms change dead organisms into nutrients...