December 13, 2011

Objective: Learn the phases of the moon Agenda Evolution of Lunar Landscape Notes Moon Phases Lab

Extra Credit Take picture of the moon upload to skiandscience.44990@uploads.photobucket.com Name the photo with your name and correct phase

The Moon What direction is the sun rising? What direction is the moon setting?

What causes the phases of the moon? The phases of the Moon depend on its position in relation to the Sun and Earth. As the Moon makes its way around the Earth, we see the bright parts of the Moon's surface at different angles.

Phases of the Moon It takes our Moon about 29.5 days to completely cycle through all eight phases. This is known as a Lunar month

Phases of the Moon Sunlight Sunlight Earth The general locations and orientations for the phases of the moon. (7) Third Quarter (6) Waning Gibbous (8) Waning Crescent Sunlight Earth (1) New Moon (5) Full Moon Sunlight Note: If you have internet explorer 5.0 and beyond you will need to Use the mouse button to advance through these slides. For Netscape Navigator the graphics show as a static picture. Earth spins on its axis in the same direction as the moon’s orbit. (2) Waxing Crescent (4) Waxing Gibbous (3) First Quarter

Perspective & The Moon’s Face How much of the moon’s face does the person see? Sunlight Earth (1) New Moon Note: If you have internet explorer 5.0 and beyond you will need to Use the mouse button to advance through these slides. For Netscape Navigator the graphics show as a static picture. NEW MOON Wherever the person looks all they see is shadowed moon.

Perspective & The Moon’s Face How much of the moon’s face does the person see? Sunlight Earth (2) Waxing Crescent Note: If you have internet explorer 5.0 and beyond you will need to Use the mouse button to advance through these slides. For Netscape Navigator the graphics show as a static picture. WAXING CRESCENT When you look up you see only a small crescent brightly lit. (Right Side)

Perspective & The Moon’s Face How much of the moon’s face does the person see? Sunlight Earth (3) First Quarter Note: If you have internet explorer 5.0 and beyond you will need to Use the mouse button to advance through these slides. For Netscape Navigator the graphics show as a static picture. FIRST QUARTER When you look up you see one half of the front face of the Moon brightly lit. (Right side)

Perspective & The Moon’s Face How much of the moon’s face does the person see? Sunlight Earth (4) Waxing Gibbous Note: If you have internet explorer 5.0 and beyond you will need to Use the mouse button to advance through these slides. For Netscape Navigator the graphics show as a static picture. WAXING GIBBOUS When you look up you see only a small crescent, darkly shadowed, on the left.

Perspective & The Moon’s Face How much of the moon’s face does the person see? Sunlight Earth (5) Full Moon Note: If you have internet explorer 5.0 and beyond you will need to Use the mouse button to advance through these slides. For Netscape Navigator the graphics show as a static picture. FULL MOON When you look up you see the entire face of the Moon brightly lit.

Perspective & The Moon’s Face How much of the moon’s face does the person see? Sunlight Earth (6) Waning Gibbous Note: If you have internet explorer 5.0 and beyond you will need to Use the mouse button to advance through these slides. For Netscape Navigator the graphics show as a static picture. WANING GIBBOUS When you look up you see only a small crescent, darkly shadowed, on the right.

Perspective & The Moon’s Face Sunlight Earth (7) Third Quarter How much of the moon’s face does the person see? Note: If you have internet explorer 5.0 and beyond you will need to Use the mouse button to advance through these slides. For Netscape Navigator the graphics show as a static picture. THIRD QUARTER When you look up you see one half of the front face of the Moon brightly lit. (Left side)

Perspective & The Moon’s Face Sunlight Earth (8) Waning Crescent How much of the moon’s face does the person see? Note: If you have internet explorer 5.0 and beyond you will need to Use the mouse button to advance through these slides. For Netscape Navigator the graphics show as a static picture. WANING CRESCENT When you look up you see only a small crescent brightly lit. (Left Side)

What phase is the moon?

What phase is the moon?

Have you ever seen a halo around the Moon Have you ever seen a halo around the Moon? This fairly common sight occurs when high thin clouds containing millions of tiny ice crystals cover much of the sky. Each ice crystal acts like a miniature lens. Because most of the crystals have a similar elongated hexagonal shape, light entering one crystal face and exiting through the opposing face refracts 22 degrees, which corresponds to the radius of the Moon Halo. A similar Sun Halo may be visible during the day. The picture was taken in Lansdowne, Pennsylvania, USA. Exactly how ice-crystals form in clouds remains under investigation.