Build the and Directions (page ) together. together. near the center of the bottom side of BASE. BASE 4 Fold 4 sides over and glue together. Build the BASE Cut away the shaded area after gluing together. BASE BASE Fold in half and glue together. *Build BASE 3 in the same manner. What is this strange thing called an "eclipse?" How is it that the sun or moon can be hidden? The Earth is a planet which orbits around the, a journey that takes a year. The orbits around the Earth, a trip that takes about a month. An eclipse of the sun, or solar eclipse, occurs when the is aligned exactly between the Earth and the. Looking up from a part of the Earth that's in the 's shadow, you can see the vanish in the middle of the day! The 's orbit around the Earth is tilted about 5. degrees from the orbit of the Earth around the. As a result of this tilt, a solar eclipse occurs somewhere on the Earth about two to five times a year. A lunar eclipse occurs when the Earth is aligned exactly between the and the, so that the moon falls within the Earth's shadow and thus vanishes from sight. Lunar eclipses are more rare than solar eclipses, typically occurring three times a year or less. This Papercraft model will let you see for yourself how eclipses work. together. Align the heart marks and glue together. together. 3 together. BASE BASE 3 Align the spade marks and glue together. [US Letter size 6 pages] Continued on page
Directions (page ) the in place 3 together. How to use the model Use a flashlight or similar light source to shine light through the hole. Turn the disk in the direction indicated by the yellow arrows. The light from the flashlight represents the light from the. The turning of the disk recreates the orbit of the around the Earth. Note: Don't use the real as your light source for your experiments! Flashlight BASE DISK Assemble the and DISK 4 DISK Cut away the shaded area after gluing together. Align the red triangle mark on the disk with the triangle marks on the BASE, as shown in the figure. When the triangle marks are aligned, look at where the light is striking, and where the shadows fall, on the Earth and the. Light Light Fold in half and glue together. *Build DISK in the same manner. Align the letters and glue in place. DISK Fit the notches around the 's stand. Align the marks and glue together. DISK Solar eclipse The blocks the light from the, and the shadow falls on the Earth. Lunar eclipse The Earth blocks the light from the, and a shadow falls on the.
(page 3) Cut line Mountain fold Valley fold Front side of the moon Back side of the moon A B C D DISK DISK Turn in the direction of the arrow. C D B A Turn in the direction of the arrow.
(page 4) Cut line Mountain fold Valley fold BASE Don't use the real as your light source for your experiments! reverse side. reverse side. http://bj.canon.co.jp/english/3d-papercraft/ A lunar eclipse occurs when the is in this position. A solar eclipse occurs when the is in this position. reverse side. C Nutural Science How Eclipses Work reverse side.
Shine a light in through this hole. (page 5) BASE BASE 3 Cut line Mountain fold Valley fold BASE 4 reverse side. reverse side. reverse side.
(page 6) Solar eclipses, lunar eclipses, and the new moon Solar eclipse [Total solar eclipse] [Annular eclipse] Corona Total solar eclipse Annular eclipse [ during a total solar eclipse] Earth Earth Bright ring Partial eclipse Partial eclipse [ during an annular solar eclipse] An eclipse of the sun, or solar eclipse, occurs when the is aligned exactly between the Earth and the. The 's shadow falls on the Earth, and from within that shadow, the appears to vanish in the middle of the day. There are three types of solar eclipse. During a "total eclipse," the 's disk is completely hidden by the. An "annular eclipse" occurs when the is farther enough from the Earth that the is not completely hidden, and the outer edge of the 's disk is visible as a ring, or "annulus." When the covers only part of the 's disk, it is called a "partial eclipse." Solar eclipses occur two to five times per year somewhere on the Earth. (During a total eclipse, the 's outer atmosphere, called the "corona," is visible around the.) [ during a partial solar eclipse] Lunar eclipse [Total lunar eclipse] Total lunar eclipse [Partial lunar eclipse] Earth Earth [ during a total lunar eclipse] Partial lunar eclipse A lunar eclipse occurs when the Earth is aligned exactly between the and the, so that the moon falls within the Earth's shadow and thus vanishes from sight. There are two types of lunar eclipse. A "total eclipse" occurs when the falls completely within the Earth's shadow. A "partial eclipse" occurs when only part of the falls within the Earth's shadow. Lunar eclipses occur up to three times a year, but some years may not occur at all. [ during a partial lunar eclipse] New moon Half moon New moon Earth Full moon Half moon A "new " occurs when the is between the Earth and the. In this position, the surface of the seen from the Earth is not lit by the 's light, and thus is not visible. A new occurs about once a month. (Note: in the figure above, the Earth,, and appear to be directly aligned; however, they are not exactly in alignment.)