Phases of the Moon 29 5 day cycle

Phases of the Moon: 29. 5 -day cycle Waxing • Moon visible in afternoon/evening • Gets “fuller” and rises later each day Waning • Moon visible in late night/morning • Gets “less full” and sets later each day © 2010 Pearson Education, Inc.

Clicker Question It is sunset and you see the moon low in the west. What phase is it? A. B. C. D. first quarter waxing gibbous third quarter waxing crescent © 2010 Pearson Education, Inc.

Clicker Question It is sunset and you see the moon low in the west. What phase is it? A. B. C. D. first quarter waxing gibbous third quarter waxing crescent © 2010 Pearson Education, Inc.

Clicker Question If you were to see the full moon rising, A. B. C. D. E. The sun is rising in the west The sun is setting in the west It is midnight It is noon It is early in the morning © 2010 Pearson Education, Inc.

Clicker Question If you were to see the full moon rising, A. B. C. D. E. The sun is rising in the west The sun is setting in the west It is midnight It is noon It is early in the morning © 2010 Pearson Education, Inc.

Clicker Question The waning crescent moon is seen, A. B. C. D. in the west at sunset in the south at midnight at noon in the east at sunrise © 2010 Pearson Education, Inc.

Clicker Question The waning crescent moon is seen, A. B. C. D. in the west at sunset in the south at midnight at noon in the east at sunrise © 2010 Pearson Education, Inc.

We see only one side of Moon Synchronous rotation: the Moon rotates exactly once with each orbit. That is why only one side is visible from Earth. © 2010 Pearson Education, Inc.

What causes eclipses? • The Earth and Moon cast shadows. • When either passes through the other’s shadow, we have an eclipse. © 2010 Pearson Education, Inc.

Lunar Eclipse © 2010 Pearson Education, Inc.

When can eclipses occur? • Lunar eclipses can occur only at full moon. • Lunar eclipses can be penumbral, partial, or total. © 2010 Pearson Education, Inc.