Evaluating The News

Write in your own words and sufficiently explain your reasoning based on your understanding of the astronomy concepts and thoughts presented in the chapter/textbook and related astronomy/astrophysics journals! W.Q. 1: Explain how scientists know that rock layers at the bottom of Arizona’s Grand Canyon are older than those found on the rim. W.Q. 2: Compare and contrast tectonism on Venus, Earth, and Mars. W.Q. 3: Describe the sources the evidence for reversals in the polarity of Earth’s magnetic field. W. Q. 4: Describe the collision theory of the formation of the Moon, including a description of how this theory explains observations of lunar properties. W. Q. 5: Explain some of the evidence that Mars once had liquid water on its surface. Why there is no liquid water on Mars today?