Post on 15-Jan-2016
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DESCRIPTIONMoon Phases. If you watch the Moon from night to night you will notice that it seems wax larger from a new moon to a full moon then wane smaller from a full moon back to new. The time from one new moon to the next is about 29.5 days and is called a lunar month. - PowerPoint PPT Presentation
If you watch the Moon from night to night you will notice that it seems wax larger from a new moon to a full moon then wane smaller from a full moon back to new. The time from one new moon to the next is about 29.5 days and is called a lunar month.
In fact the time it takes for the moon to go from any phase to the next time it shows the exact same phase is a lunar month.
The Source of Moon phasesThe Moons orbit around the Earth causes the Moon to have phases. The phases are NOT caused by the Earths shadow!
Your group will model the Moon as it orbits around the Earth. Your head will become the Earth and you will hold a small ball as the Moon. A light source will be the Sun. You will also be completing a scriptsheet.
A few rules will help you understand Moon phases.
Crescent MoonThe Moon will be a crescent when it is closer to the Sun than you are.
Gibbous MoonThe Moon will be gibbous when it is farther from the Sun than you are.
Waxing MoonThe Moon will be waxing as it travels away from the Sun.
Waning MoonThe Moon will be waning as it travels toward the Sun.
These rules can be used to understand phases seen with other objects in other places.
The Moon is at First Quarter because it is at the same distance from the Sun as the Earth. Since the Styrofoam ball is also on the Earth it shows the same phase.
Both the Moon and the water tower are closer to the Sun than the photographer so both are crescents. Is the Sun to the left or right of the picture?
The water tower on the left is even closer to the sun so it is an even thinner crescent.
Earth Phases can be seen from the Moon.
QuestionWhich is closer to the Sun, the Earth or the Moon?
EarthriseQuestionWhich is closer to the Sun, the Earth or the Moon?
Quarter Earth and Moon
Gibbous Earth and Crescent Moon
EclipsesEclipses occur when the shadow of one object in space covers another
Lunar EclipsesLunar Eclipses occur when the shadow of the Earth covers the Moon. They can only occur during the Full Moon.
The Earth is Round!The shape of the Earths shadow has long been used to see both the size and true shape of the Earth.
Lunar EclipsesLunar eclipses can be seen from half the Earth. More people get the chance to see Lunar eclipses than Solar Eclipses.
Solar EclipsesSolar Eclipses occur when the shadow of the Moon covers part of the earth. They can only occur on the New Moon.
Partial EclipsePartial eclipses are seen when the Moon covers only part of the Sun from the viewers location.
Total EclipseTotal eclipses are seen when the Moon covers all of the Sun from the viewers location.
TransitAn eclipse is similar to a transit. A transit occurs when one astronomical object passes in front of another. Here Venus is passing in front of the Sun.
TidesTides are caused by gravity. It is not only the strength of gravity that causes tides but how gravity grows weaker with distance.
The gravitational pull of the Sun or a planet is greater on nearby objects.
The gravitational pull of the Moon pulls ocean water to the side of the earth facing the Moon. Water is also left behind on the opposite side of the Earth.
Both the Sun and the Moon create tides. The Moons tides are greater than those of the Sun. These two tidal cause can work together or opposite to each other.
Full Moon Names
Farmer's Almanac Blue Moon
-The third full moon in a quarter of a year that has 4 full moons. Most quarters have only 3 full moons.
Calendar Blue Moon
-The second full moon in the same moon. Most months have only 1 full moon.
This term began as an error in a Sky and telescope magazine article in 1946.
-The first full moon of the year.
-The full moon of February.
-The full moon of March.
-The full moon before Easter.
Full Harvest Moon
-The full moon closest to the Autumnal Equinox.
-The first full moon after the Harvest Moon.
Faces in the Full Moon
Full Moon Shapes