1			2			3
4
							5
						6
	7
8
																		9		10
									11					12
					13
				14
		15												16
17
							18
19																			20
									21
											22
23
														24

Across 4. The ________ is the part of the Earth System that includes all Earth's water and ice; most of it consists of saltwater in the oceans (Fact 114) 6. _______ rock forms from the transformation of existing rock types due to heat or pressure (Fact 108) 8. The ________ is Earth's solid, rocky outer layer; It is made of the continents and islands and extends under the ocean floor. (Fact 116) 11. The outermost sphere of he Earth System is the __________, which is a mixture of gases; the most abunddant gases are nitrogen and oxygen (Fact 111) 14. The _____ ______ is made of four parts, the atmosphere, the hydrosphere, the lithosphere and the biosphere (Fact 110) 15. The _______ Era started 543 million years ago and ended 248 million years ago; Pangaea formed during this Era and the greatest mass extinction in history occurred at the end of this era (Fact 90) 16. _______ rock forms when lava or pyroclastic material cools and solidifies (Fact 105) 18. _______ is the ability to do work or cause change; it travels from the sun to the Earth in the form of waves (Fact 109) 19. Oceans cover two thirds of the Earth's _______ (Fact 115) 21. ______ are small rocky bodies that revolve around the sun between the orbits of Mars and Jupiter (Fact 67) 22. The ________ is made of all living things on Earth (Fact 117) 23. Scientists make ______ or reasoned judgments to explain observations (Fact 9) 24. sedimentary rock forms in _______ called stratifications (Fact 107)

Down 1. ______ _______ began 4.6 billion years ago and ended 544 million years ago; this time period accounts form more than 80% of geologic time (Fact 88) 2. Scientists make ______ when they use their senses to gain information (Fact 8) 3. Rock is a solid mixture of one or more minerals; it is broken down by ______ via wind, water, and ice (Fact 102) 5. ______ is the condition of the Earth's atmosphere at a certain time and in a certain place (Fact 112) 7. _______ is the average long term condtions of temperature, precipitation, winds, and clouds in an area (Fact 113) 9. The ______ Era began 65 million years ago and is the era we live in; it is known as the Age of the Mammals (Fact 98) 10. sedimentary rock forms when sediments are compacted and cemented together or when minerals crystallize out of oceans and lakes; the remains of ______ and animals are found in this type of rock (Fact 106) 12. Scientists make _______ to forecast whatwill happen in the future based on past experience or evidence (Fact 10) 13. The _____ ____ is the continual movement of water through Earth's atmosphere, oceans, and land through evaporation, condensation, and precipitation (Fact 118) 17. The _______ Era began 542 million years ago and ended 65 million years ago and is known as the Age of the Dinosaurs (Fact 93) 20. ______ are small bodies of water, ice, and dust left over from the formation of the solar system (Fact 66)