Lab 4 - Experiment 4-3 (Eclipses) Objective: To research...

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Experiment 4-3 (Eclipses) Objective : To research eclipses. Results, Explanations, Conclusion : The difference between a solar eclipse and a lunar eclipse is that a solar eclipse is when the Moon blocks the Sun from Earth and is front of the Sun. A lunar eclipse is when the Earth blocks sunlight from getting to the Moon. The Moon has to be in a straight line for either of these eclipses to occur. For the solar eclipse the Moon has to be in between Earth and the Sun and for the lunar eclipse the Earth needs to be between the Moon and the Sun. The umbra of an eclipse is when you can see the total eclipse and a penumbra is when you can only see a partial eclipse. These terms are both referring to how much of an eclipse you can see. An interesting fact about eclipses is that thousands of years ago the Chinese thought a hungry dragon was trying to eat the Sun when there was a solar eclipse. Another interesting example of why eclipses don’t occur is that the Moon is tipped slightly so we don’t have eclipse very often because the Moon, Sun and Earth don’t align. Teaching Applications : -“Story Time”: In this experiment you would read to the children the story “Eclipse” by Franklin Branley. By reading this to them, they will come to a better understanding of what eclipses are and why they occur. After reading the book you can then have a discussion about eclipses to make sure that they understand the different types of eclipses and how they happen. -“Flashing Light”: For this experiment you would need a flashlight and three different balls. Demonstrate to the children the positions of the Earth, Sun, and Moon when the two types of eclipses occur. By having the children visualize where they are, it will aid in their understanding of what happens when there is a solar and lunar eclipse. Diagram : Reference : Moore, Patrick. Astronomy For the Beginner . (16-17)
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Experiment 4-4 (Seasons, Stars, and Constellations) Objective : To research seasons, stars, and constellations. Results, Explanations, Conclusion : For this experiment we used a globe and a flashlight to demonstrate the seasons. We tilted the earth and by tipping the Earth on its axis we showed how the different seasons occur. The seasons are caused by the Earth’s tilt. The tipping of the Earth’s axis, in combination with the rotation of the Earth around the Sun, creates the seasons. Winter constellations are constellations that we only see in winter, and summer constellations are constellations that we only see in summer. We have seasonal constellations because of the tilt of the Earth and when it rotates around the Sun. There are constellations that can be seen all of the time and none of the time. These occur at the very north and south poles. In the south there is the Southern Cross, which
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This note was uploaded on 03/16/2011 for the course PHYSICAL S 110 taught by Professor Reese during the Fall '10 term at BYU.

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Lab 4 - Experiment 4-3 (Eclipses) Objective: To research...

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