6 Why? When does the moon rise and set each day? 50 minutes later each dayWhy?It takes this much time for the moon to catch up to the revolution of the earth.
7 The change in shape is because of the way the moon reflects light from the sun & How we see it from the earth as it revolves in its orbit around the earthc) The changing shapes of the moon are called phases.Why does the moon appear to change shape?
8 What is the difference between a waxing & waning moon? Waxing Phases – part of the moon that is visible increasesb) Waning Phases – part of the moon that is visible decreases
9 What are the phases of the moon? New Moon – there appears to be no moon at all(Sun, Moon, Earth)2. Waxing crescent phase – less than half the moon is visible from the earthFirst Quarter – there appears to be half a moon4. Waxing gibbous phase – more than half the moon is visible
10 Full Moon – whole face of the moon is visible (Sun, Earth, Moon) 6. Waning gibbous phase - more than half the moon is visible7. 3rd Quarter - there appears to be half a moon8. Waning crescent phase – less than half the moon is visible from the earthWhat would come next?
16 SUMMARY… Compare apogee and perigee. Why do we always see the same side of the moon?How long does it take the moon to complete one revolution around the earth? Rotation?Why does the moon appear to change shape?
17 Motions of the Earth & Moon: Quiz #1 The movement of the earth around the sun iscalled _______________.Day & night are caused by the earth’s _______.3. The North Pole of the earth points toward___________.The earth rotates on its axis from _______ to ________.5. During the _________, the earth receives slanted rays from the sun.
18 D A C E B 6. What is the date of the earth at point A? 7. What season is the Southern Hemispherehaving at point C?DACEB
19 Is point E considered to be aphelion or perihelion?DACEB
20 9. When the part of the moon that is visible increases the moon is said to be in its (waxing/waning) phase.10. When there appears to be no moon at all &the Sun, Moon & Earth are all aligned the phase of the moon is the ________ moon.
21 Aim: How does an eclipse occur? Do Now:List the phases of the moon.Homework:Handout 17-7 & 17-8
22 How does an eclipse of the moon occur? A lunar eclipse occurs when the moon passes through the earths shadowCan only occur during a full moon(Sun Earth Moon)Observe a lunar eclipse.
23 What are the two parts of a shadow? The umbra – the very dark center2. The penumbra- the outer lighter part of the shadow
24 What is the difference between a total lunar eclipse and a partial lunar eclipse? Total Lunar Eclipse – The moon moves entirely into the earths umbraPartial Lunar Eclipse – When only part of the moon moves into the earths umbraSunlight can still reach the moon
25 How does an eclipse of the sun occur? A Solar Eclipse occurs when the moon passes between the earth and the sun.The moon cast a shadow on the earth.Sun Moon EarthObserve solar eclipses.
27 What is the difference between a total solar eclipse and a partial solar eclipse? The entire face of the sun is blocked by the moon2. Caused by the umbra3. Visible from only a small part of the earthPartial Solar Eclipse-Only part of the suns face is blocked2. Caused by the penumbra3. Seen over a larger area of earth
28 Let’s Review… What causes a lunar eclipse? Explain the difference between umbra and penumbra.Where do you have to live on earth to see a total solar eclipse?
29 Aim: How does the moon affect the tides? Do Now:Draw a lunar eclipse (include umbra & penumbra)Homework:Handout (17-9 & 17-10)
30 Phases of Moon & Eclipses: Quiz #1 When the part of the moon that is visible increases it is said to be (waxing/waning).When the Sun, Moon & Earth are all aligned the phase of the moon is the (Full/New) moon.The darkest part of a shadow is called the (umbra/penumbra).An eclipse that occurs during the Full Moon phase is (solar/lunar).When the moon’s penumbra touches the earth, people within the penumbra see a (total/partial) solar eclipse.
31 What are tides?The changes in ocean water levelsLow water level = Low TideHigh water level = High TideWhat causes the tides?The moons gravitational force pulls the water in the ocean toward the moon.
40 SUMMARY How many tides do we have a day? What causes the tides? What is the difference between a spring tide and a neap tide?How does the earth, sun and moon line up during a neap tide?
41 Tides: Quiz #1An incoming or rising tide is known as a _____tide.A daily change in the level of the earth’s oceans is called __________.Tides that are not as high or as low as normal are called ________ tides.During what phases of the moon do Spring tides occur?What causes tides to occur?