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BGC Cycles: Carbon Cycle. Carbon (C) is the basis of life on Earth.

BGC Cycles: Carbon Cycle

Scientists consider 99.9% of all organisms on the planet to be carbon based life. Those organisms need carbon to survive. Whether the carbon is in the form of a sugar or carbon dioxide gas, we all need it. Unlike energy, carbon is continuously cycled and reused. The Earth only has a fixed amount of carbon. Scientific Studies: Species. Scientists have all these complex ways of organizing living things.

Scientific Studies: Species

They look at your physical traits, how you develop as a fetus, or in an egg. They look to see if you are a plant. Scientific Studies: Taxonomy. Every known living organism on Earth is classified and named by a set of rules.

Scientific Studies: Taxonomy

Those rules are used by all scientists around the planet. The names are called scientific names, not common names. Common names are the ones you might use when talking with your friends. You call your pet a dog or a cat (the common name). Scientists call those animals by a set of several names like Canis familiarus. Electricity & Magnetism: Introduction. Electricity is related to charges, and both electrons and protons carry a charge.

Electricity & Magnetism: Introduction

The amount of the charge is the same for each particle, but opposite in sign. Electrons carry a negative charge while protons carry positive charge. Activities & Quizzes. Modern Physics: Fusion. Fusion is the process of two small atomic nuclei coming together to make a larger nucleus which is stable.

Modern Physics: Fusion

The simplest nuclei to use are deuterium and tritium (isotopes of hydrogen). Scientists find deuterium in the oceans, so it's pretty easy to find if you know where to look. The fusion reactions in many stars are different from the reactions we are trying to develop on Earth. Scientists call the fusion process on a star the proton-proton chain reaction. Modern Physics: Radioactivity. Radioactivity occurs when an atomic nucleus breaks down into smaller particles.

Modern Physics: Radioactivity

There are three types of nuclear radiation: alpha, beta, and gamma. Alpha particles are positively charged, beta particles are negatively charged, and gamma particles have no charge. Elements & Periodic Table: Alkaline Earth Metals. So we just covered the alkali metals in Group I.

Elements & Periodic Table: Alkaline Earth Metals

You will find the alkaline earth metals right next door in Group II. This is the second most reactive family of elements in the periodic table. Do you know why they are called alkaline? When these compounds are mixed in solutions, they are likely to form solutions with a pH greater than 7. fACT$ OceanremixedPuna.