Write every question that you missed and write the correct answer (not a, b, c, or d). Next, you have to explain how to solve that question. I don’t want to know what you missed, I just want to know that you can explain how to solve the problem. 3 4 2 5 1 6 8 7 1. Question.) Which moon phase is number 1? Answer) New moon Explanation) When the moon is not visible because the part that is illuminated is facing away from Earth, in the daytime, we call it a new moon. This phase lasts for a day. 2. Question.) Which moon phase is number 2? Answer) Waxing Crescent Explanation) A waxing crescent is the beginning of the lunar cycle. It is waxing because the right hand side is illuminated and it’s growing. It is a crescent shape from a small sliver until it’s just less than the 1st quarter. This phase lasts about a week. 3. Which moon phase is number 3? First Quarter A first quarter is the first of the two quarter moons you see in the lunar cycle. The right hand side is illuminated. It looks like half of the moon, but if you looked at the whole sphere including the other side, it really is only 1/4th or one quarter. This phase only lasts for 1 day. 4. Which moon phase is number 4? Waxing Gibbous Waxing is growing so the right hand side is illuminated. A gibbous is bigger than a quarter, but smaller than a full. This phase lasts about a week and it will grow a little bigger each day. 5. Which moon phase is number 5? Full moon The full moon is when the half that is reflecting light is facing Earth and you see the full illuminated side. This only last for a day. Sometimes it looks like it lasts longer because the part that is reflected is so bright and you don’t see the small sliver that isn’t showing. 6. Which moon phase is number 6? Waning Gibbous Waning is shrinking so the left hand side is illuminated. A gibbous is smaller than a full, but bigger than a quarter. This phase lasts about a week and it will shrink a little smaller each day. 7. Which moon phase is number 7? b. Last Quarter c. Third Quarter d. Both b and c are correct A last quarter is the last of the two quarter moons you see in the lunar cycle. It happens at the end of the third week so it is also known as the third quarter. The left hand side is illuminated. It looks like half of the moon, but if you looked at the whole sphere including the other side, it really is only 1/4th or one quarter. This phase only lasts for 1 day. 8. Which moon phase is number 8? Waning Crescent A waning crescent is the end of the lunar cycle. It is waning because the left hand side is illuminated and shrinking. It is a crescent shape from a just less than the 3rd quarter until it’s a small sliver. This phase lasts about a week. 9. Looking at the lunar cycle, which week is box # 9? Week 1 This is the first week of the lunar cycle 10. Looking at the lunar cycle, which week is box # 10? Week 2 This is the second week of the lunar cycle 11. Looking at the lunar cycle, which week is box # 11? Week 3 This is the third week of the lunar cycle 12. Looking at the lunar cycle, which week is box # 12? Week 4 This is the fourth week of the lunar cycle 13. How long does it take for the moon to rotate once on its axis? 27.3 days It takes 27.3 days to spin or rotate on its axis. It also takes 27.3 days to revolve around the Earth. Because it spins (rotates) and revolves at the same rate, we always see the same side of the moon. 14. How long does it take for the moon to revolve around Earth? 27.3 days It takes 27.3 days to spin or rotate on its axis. It also takes 27.3 days to revolve around the Earth. Because it spins (rotates) and revolves at the same rate, we always see the same side of the moon. OR The moon rotates and revolves at the same rate. It takes 27.3 days to rotate on its axis and 27.3 days to revolve around Earth. Because Earth has moved, it takes 29.5 days to complete a full lunar cycle. (To get back to where it started.) It is similar to a sidereal day and a solar day. 15. Q. How long does it take for the moon complete one lunar cycle? 29 days 12 hours E. It only takes Earth 27.3 days to go in a revolution around Earth, but Earth has moved as it revolves around the sun. Now, in order to get back to the original spot, it takes 29 and one half days to complete one full lunar cycle. One half of a day is 12 hours. (To get back to where it started.) It is similar to a sidereal day and a solar day. 16. An object that revolves around a planet is called a (an) a. Moon b. Satellite c. Both a & b are correct Satellites revolve around something. A satellite can be natural like the moon or manmade. Planets can also be satellites around the sun. 17. During which moon phase can a solar eclipse occur? New Moon If you have a solar eclipse, the moon is going in front of the sun, and blocking your view, during the daytime. All 3 are in perfect alignment and the moon is between the sun and Earth. This can only happen when it’s a new moon. 18. During which moon phase can a lunar eclipse occur? Full moon A lunar eclipse happens when the full moon is entering Earth’s shadow. In order for all 3 to be in alignment, it has to be a full moon. The Earth is in-between the sun and the moon 19. The 2nd full moon in the same month is known as a _______________ Blue moon If you have two full moons in the same month, the second one is called a blue moon. It has nothing to do with the color of the moon. In the 1950’s they printed the second full moon in a month with blue ink so they called it a blue moon. Since it doesn’t happen very often, the phrase once in a blue moon means something is rare. On questions 20-24, match the length of time that best fits the description 20. Some time has passed since the full moon. There is no moon visible in the sky About two weeks have passed A full moon only lasts for one night, but a waning gibbous lasts for about a week. The third quarter only lasts for one night, but the waning crescent lasts for about a week. If you add this up, it takes about two weeks to go from a full moon to a new moon. 21. The moon had just a sliver of light on its left side. Now it has just a sliver of light on its right side. About 1 week has passed If the moon has a sliver of light on its left side, it is a waning crescent. If it now has a sliver of light on its right side, it is a waxing crescent. In between these two stages is a new moon that only lasts for one night. Each of the crescents last for about a week, but if you already at a sliver you only have a few days before it’s a new moon. A few days before a new moon is 2-3 days, a new moon is one day and it takes 2-3 days to reach a sliver after the new moon. This adds up to about a week. 22. You have seen a first-quarter moon three times now. Three months have passed It takes about a month to complete one full lunar cycle. If you are seeing the same moon for the third time, about three months have passed. 23. The moon was just a sliver of light on its right side. Now it’s just a sliver of light on its left side. E About three weeks have passed If there is a sliver of light on its right side, it is a waxing crescent. It will take a week to go from a waxing crescent to a waxing gibbous. It will take a second week to go from a waxing gibbous to a waning gibbous and a third week to go from a waning gibbous to a waning crescent. The waning crescent has a sliver of light on the left hand side. 24. Some time has passed since the waxing gibbous moon. The moon is a waxing gibbous moon again B One month has passed A full lunar cycle takes 29.5 days or about a month. If it goes from a waxing gibbous to a waxing gibbous again, a full lunar cycle has taken place. .