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Vocabulary Review 2.0

Directions: Use vocabulary words to complete the puzzle. Vocabulary words can be found on Google Classroom and Schoology.
Across
The natural process that occurs when gases in the atmosphere absorb and re-radiate thermal energy from the sun.
The result of using one or more of your senses to gather information and taking note of what occurs.
Matter that emits no light at any wavelength.
A possible explanation for an observation that can be tested by scientific investigations.
Life that originates outside of Earth.
A large ball of gas held together by gravity with a core so hot that nuclear fusion occurs.
An instrument that spreads light into different wavelengths.
The lighter part of a shadow where light is partially blocked.
A day when Earth's rotation axis is leaning along Earth's orbit, neither toward nor away from the Sun.
Down
The distance light travels in one year.
A telescope that uses a convex lens to concentrate light from a distant object.
Reusable spacecraft that transport people and materials to and from space.
The shift to a different wavelength.
An enormous explosion that destroys a star.
A spoken or written summary of observations.
An object whose gravity is so great that no light can escape.
The true brightness of an object.
The imaginary line that divides Earth into its northern and southern hemispheres.
A cloud of gas and dust.
A vehicle designed to propel itself by ejecting exhaust gas from one end.