This printable crossword puzzle has 30 clues. Answers range from 4 to 14 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
This shell on the outside of the Earth.
Layer of Earth between the crust and core.
Fluid like layer that lies above the solid inner core.
Inner most geologic layer of the Earth.
Semipermiable membranes surrounding the cytoplasm of a cell.
Material within a living cell excluding the nucleus.
A dense organelle present in most eukaryotic cell, typically a single rounded structure bounded by a double membrane that contains the genetic material.
Organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur.
A minute particle consisting of RNA and associated protiens found in large numbers in the cytoplasm of living cells.
A complex of vessels and folded membranes within the cytoplasm of most eukaryotic cells.
A star that suddenly increased greatly in brightness because of a catastrophic explosion that ejects most of it's mass.
A small very dense star that is typically the size of a planet, it is formed when a low mass star has exhausted all of it's central nuclear fuel and lost its outer layer as a planetary nebula.
A very large star of high luminosity and low surface temperature.
A stable subatomic particle occuring in all atomic nuclei, with a positive electric charge.
A stable subatomic particle with a charge of negative electricity.
A subatomic particle of about the same mass of a proton but without an electric charge.
The chemical element of atomic number 6, a non-metal in which has two main forms. Has an atomic symbol of 'C'.
A table of the chemical elements, arranged in order of atomic number.
A colorless, odorless reactive gas, the chemical element of atmoc number 8, and the life supporting componant of air.
The cycle of processes by which water circulates between the Earth's oceans, atmosphere and land.
A series of processes by which carbon compounds are interconverted in the environment.
A colorless, odorless highly flamable gas, the chemical element of atomic number 1.
The mass of an atom of a chemical element, express in atomic mass units.
The number of protons in the nucleus of an atom
A nuclear reaction in which atomic nuclei of low atomic number fused to form a heavier nucleus with the release of energy
A cloud of gas and dust in outer space, visible in the night sky either as a indistenct bright patch or as a dark silhouette against other luminous matter.
The property of matter and radiation which is manifest as a capacity to perform work.
The quality of matter which a body contains.
The chemical element of atomic number 2, an inert gas which is the lightest member of the nobel gas series.
The chemical element of atomic number 11, a soft silver white reactive metal of the alkali metal group.