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Formation of the Solar System

The Earth & the Sun Choice Board Cross Word Puzzle
Across
The combination of the nuclei of small atoms to form a larger nucleus; releases energy
The central part of the Earth below the mantle
The thin solid outermost layer of the Earth above the mantle
The spin of a body on its axis
Down
The cloud of gas and dust that formed our solar system
Mixers of gases
The motion of a body that travels around another body in space; one complete trip along an orbit
The path that a body follows as it travels around another body in space
The layer of rock between the Earth's crust and core
A dark area of the photosphere of the sun that is cooler than the surrounding area and that has a strong magnetic field