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Across 2. a ______ ______ is a diagram that shows the many energy pathways in an ecosystem (Fact 151) 6. a _______ ______ is a diagram that shows the transfer of energy from one organism to the next (Fact 152) 10. Meteorology is the study of Earth's ____________ (Fact 81) 11. All of the outer planets are known as ____ ______ meaning they do not have solid surfaces. (Fact 57) 13. ______ _____ is a theory that Earth's lithosphere is broken into plates that move around (Fact 129) 15. the four inner or _______ planets are Mercury, Venus, Earth and Mars (Fact 33) 16. ________ waves are waves of energy that travel through the Earth (Fact 134) 20. the ________ of an earthquake is the point on the Earth's surface directly above an earthquake's starting point (Fact 135) 22. __________ such as plants, algae and some bacteria are the source of all the food in an ecosystem (Fact 148) 23. the ______ is a medium sized star made mostly of hydrogen and helium (Fact 29

Down 1. The _______ ________ is the galaxy we live in and is a spiral galaxy. (Fact 77) 3. __________ are organisms that break down the remains of dead organisms for energy (Fact 150) 4. ________ is the condition of Earth's atmosphere at a certain time and in a certain place (Fact 111) 5. ________ or life science is the study of living things (Fact 154) 7. an _______ _____ is a diagram shaped liked a triangle showing the loss of energy at each level of the food chain (Fact 153) 8. the ______ of an earthquake is the point inside the Earth where the earthquake begins (Fact 136)) 9. producers are organisms that use _______ to make their own food through a process called photosynthesis (Fact 147) 12. ___________ are organisms that eat producers or other organisms for energy (Fact 149) 14. ________ is the average long term conditions of temperature, precipitation, winds, and clouds in an area (Fact 112) 17. organisms in an ecosystem are divided into three groups based on how they obtain _____ (Fact 145) 18. The four outer planets are Jupiter, _______, Uranus and Neptune (Fact 56) 19. a ________ is a naturally formed inorganic solid with a crystalline structure (Fact 100) 21. _______ are small bodies of water, ice, and dust left over from the formation of the solar system (Fact 66)