A Collection of Scientific Facts for Children
1. The Sun:
- The Sun is a star at the center of our solar system.
- It is about 93 million miles away from Earth.
- The Sun provides the light and heat necessary for life on Earth.
2. Water:
- Water covers about 71% of the Earth’s surface.
- It exists in three forms: solid (ice), liquid (water), and gas (steam).
- Humans need water to survive, and our bodies are about 60% water.
3. Plants:
- Plants produce their own food through a process called photosynthesis.
- They take in carbon dioxide, water, and sunlight to make food and release oxygen.
- Trees can live for thousands of years; some are older than 4,000 years!
4. Space:
- There are eight planets in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
- The largest planet in our solar system is Jupiter.
- The Milky Way galaxy, where our solar system is located, contains billions of stars.
5. Animals:
- The blue whale is the largest animal on Earth, reaching lengths of up to 100 feet.
- Cheetahs are the fastest land animals, capable of running at speeds up to 70 miles per hour.
- Octopuses have three hearts and blue blood.
6. The Human Body:
- The human body has 206 bones.
- The heart beats about 100,000 times a day.
- Our brains contain about 86 billion nerve cells called neurons.
7. Earth:
- Earth is the third planet from the Sun.
- It is the only planet known to support life.
- The Earth’s rotation on its axis causes day and night.
8. Dinosaurs:
- Dinosaurs lived on Earth about 65 million years ago.
- The Tyrannosaurus rex (T. rex) was one of the largest meat-eating dinosaurs.
- Fossils are the preserved remains of ancient organisms, including dinosaurs.
9. Weather:
- Lightning is a powerful burst of electricity in the atmosphere.
- Tornadoes are rapidly rotating columns of air that extend from thunderstorms to the ground.
- Rainbows are formed when sunlight is refracted, or bent, and then reflected inside water droplets.
10. The Ocean:
- The ocean is home to the tallest mountain on Earth, Mauna Kea, if measured from its base on the ocean floor.
- Coral reefs are underwater ecosystems built by tiny sea creatures called corals.
- Oceans contain about 97% of the Earth’s water.