Monday, February 17 Do Now

1. Monday, February 17 Do Now Page 54 Standard 6E11 Title Earth Rotation and Revolution Do Now LEQ What would the results be if the moon did not revolve around the Earth? Directions:  1. COPY this diagram into your notebook. Make sure to include the labels A and B in your drawing. 2. Answer this question in a full sentence: Approximately how many months does it take Earth to move from position A to position B?

2. This week’s vocabulary words: Take 2 minutes to copy these down onto your blank sheet of paper. • Rotate • Revolve • Axis • Satellite • Tides • Eclipse • Solar • Lunar • Shadow • Illuminate • Waning • Waxing

3. Moon phases are the different forms that the moon takes in its appearance from Earth. • The phase of the moon we see on a given day depends on the positions of the moon, Earth, and sun. Remember, the moon does not produce its own light, it only reflects light from the sun. • Our moon passes through 8 different phases during a cycle. • The cycle repeats itself every 29.5 days. • The sun always lights up half of the moon’s surface, while half of it is left dark. The amount of the bright side we see changes as the moon revolves around Earth.

4. When the moon is directly between the Earth and the sun, we see nothing at all. This is a new moon. • When the moon is on the opposite side of the Earth from the sun, we see the entire bright side of the moon, a full moon.

5. New Moons & Full Moons

6. After a new moon, as more and more of the bright side of the moon becomes visible, the moon is waxing, or “growing”. • The amount of moon we see waxes until we reach a full moon. • After a full moon, as less and less of the bright side of the moon becomes visible, the moon is waning, or “shrinking”. • The amount of the moon we can see wanes until we reach a new moon.

7. Waxing & Waning Moons • When the moon is waxing, the illuminated side is to your right. When the moon is waning, the illuminated side is to your left.

8. Gibbous & Crescent Moons • When more than half of the moon is illuminated in the sky, we call it a gibbous moon. • When less than half of the moon is illuminated in the sky, we call it a crescent moon.

9. First and Third Quarter Moons • As the moon is waxing (growing), when we see exactly half of the moon it is called a first quarter moon. • When we see half of a waning moon, it is a third quarter moon. • In a first quarter moon the illuminated side is to your right, and in a third quarter moon it is to your left.

10. When we describe a moon phase, it’s important that we say whether its waxing or waning AND whether it is a gibbous or crescent moon.

11. Phase Practice

12. Phase Practice

13. Phase Practice

14. Phase Practice

15. Phase Practice

16. Phase Practice

17. Phase Practice

18. Phase Practice

19. Exit Ticket Identify the phase of the moon shown in each picture. 1. 2. 3. Draw the phase of the moon listed for questions 4 & 5. 4. Waning Gibbous 5. Waxing Crescent

20. Tuesday, February 18 Do Now Page Standard Title LEQ Directions:  1. COPY this diagram into your notebook. Make sure to include the labels (Sun, Earth, Moon) in your drawing. 2. Answer this question in a full sentence: Approximately how long does it take the moon revolve once around Earth?