STEM教案月球岩石-中英文.docVIP

Air and Space Museum Welcome to STEM in 30! Join us right now for a 30 minute discussion about Science, Technology, Engineering, and Mathematics (STEM) from the Smithsonians National Air and Space Museum! Jennifer, Research Fellow Hello everyone, welcome to STEM in 30! My name is Jennifer Whitten and I am a researcher here at the National Air and Space Museum. Todays show is focused on the Moon, one of my favorite planetary bodies! Some of my research involves studying volcanic deposits on the Moon, but I enjoy talking about all aspects of lunar geology. I am looking forward to your questions. For two weeks in 2010, the Lunar Reconnaissance Orbiter acquired about 1,300 images resulting in this spectacular mosaic of the near side of the Moon. Image credit: NASA/Goddard Space Flight Center/Arizona State University. Did you know? Recent computer models indicate that the Moon could have been formed from the debris resulting from the Earth being struck a glancing blow by a planetary body about the size of Mars. The chemical composition of the Moon, derived from studies of lunar rocks, is compatible with this theory of the origin of the Moon. We have learned that a crust formed on the Moon 4.4 billion years ago. Learn more about the Moon from NASA. Which of the following is true? The Moon has no gravity. 0% The Moon does not rotate . 0% The Moon has a constant dark side. 0% None of the above. 100% Comment From Roz What is the name of the largest crater that I can see on the Moon? Jennifer, Research Fellow:? The largest crater on the nearside of the Moon is the Imbrium Basin, but it doesnt look like a crater because it is almost entirely filled with mare (lava). Without all the mare, Imbrium Basin would look like Orientale Basin (see image below), with several interior rings. NASAs Lunar Reconnaissance Orbiter (LRO) recently captured a unique view of Earth from the spacecrafts vantage point in orbit around the moon. The image of the Earth evokes the famous Blue Marble