Arny, 3 rd Edition, Chapter 1

22 You see it almost every day Moon’s appearance Moon’s changing phases What can we observe about the Moon today that prehistoric people would also have seen?

33 Describe the reason we see the Moon go through phases. Define and summarize the Moon’s cycle of phases Why does the Moon look different every day? Analyze how the Moon’s relationship to its phases relates to phenomenon on Earth How does the Moon affect the Earth?

44 The Moon—Earth’s satellite and nearest neighbor About 237,500 mi away 380,000 km A quarter of a million miles Earth Moon Baseball Marble 5.6 m or 18 ft Earth Moon

55 The Moon’s changing appearance—obvious to any observer Based on relative positions of the Sun, Earth, and Moon Appearance changes through a cycle over about one month. “Month” comes from the word “moon.”

66 What the Moon looks like at night “Rising” in the east and “setting” in the west; rises 50 minutes later each day Half the Moon is always lit by the Sun Full Moon always rises as the Sun sets Vocabulary Crescent Gibbous Waxing Waning

77 (A) (A)The cycle of the Moon’s phases from new to full and back again. (B) The Moon's phases—pictures in the dark squares show how the Moon looks to us on Earth.

88   How the Sun lights the Moon’s surface   When you can see a full Moon (position 5)   Phases about 3 ½ days each   Each phase starts about 3 hours later than previous phase

99   The Moon Globe is lit from one direction   Notice as you move around the globe that you only see a portion of the lit half   Familiarize yourself with each of the 8 phases

 10   Where and when the Moon rises and sets   How the Moon looks at different times   What causes the Moon’s changing appearance   How the Sun lights the Moon’s surface   How we see that surface from Earth

 11 Would you see a full moon in the middle of the afternoon? Explain your answer. Would you see a first-quarter moon just before sunrise? Explain your answer. Why can’t you ever see a new moon?

 12 In the small circles draw what the Moon looks like from Earth at each of the Moon’s eight phases. Activity—Test yourself Sun

 13 Describe the reason we see the Moon go through phases. Define and summarize the Moon’s cycle of phases Why does the Moon look different every day? Analyze how the Moon’s relationship to its phases relates to phenomenon on Earth How does the Moon affect the Earth?

 The Moon  Lesson 13: Eclipses  14 Done—The Moon’s Phases Next—The Moon and Eclipses