Top 10 Science Riddles
Most Famous Top 10 Science Riddles of All Time!
We have created a collection of some of the best top 10 science riddles so you can read and share anytime with your friends and family. Share our Science Riddles Collection on Facebook, Twitter, and Pinterest.
I am the smallest possible unit of a chemical element that still keeps all the properties of that element. What am I?
Answer
An atom. Atoms are the fundamental building blocks of all matter in the universe.
What invisible force constantly pulls every object on Earth downward toward the ground?
Answer
Gravity. It is the natural force of attraction between masses, keeping us firmly planted on the planet's surface.
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What natural process do green plants use to convert sunlight, water, and carbon dioxide into the food and energy they need to grow?
Answer
Photosynthesis. It occurs mainly in the leaves, using chlorophyll to capture light energy and produce glucose.
What invisible gas, making up roughly 21 percent of Earth's atmosphere, is absolutely essential for humans and most animals to survive?
Answer
Oxygen. Without it, the cells in our bodies could not produce the energy needed to stay alive.
Animal Riddles
6What powerful, muscular organ in the human body continuously pumps blood through a vast network of vessels to every part of the body?
Answer
The heart. It beats roughly 100,000 times a day, circulating oxygen and nutrients throughout the entire body.
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