1. Investigation 4 Part 2 and All of 5
Ratios and moon phases
Investigation 4 Part 2 and All of 5

2. Statistics Moon diameter = 3,474 km
Distance between Earth and Moon = 384,000 km
Earth diameter = 12,756 km

3. Earth/Moon Diameter ratio
Moon diameter = 3,474 km
Earth diameter = 12,756 km
3,474 km / 12,756 km = 0.27 km
The Moon = ¼ the diameter of Earth
Earth/Moon Diameter ratio

4. Questions
If the Earth is 12 cm in diameter, how big is the moon and how far apart are they?
What is each centimeter on the model equal to on Earth?
The scale of the model is _______km/cm.

5. If the Earth is modeled at 24 cm in diameter, what size would the moon be and how far apart would the two be?

6. If the Moon sphere is 24 cm in diameter, how big would the Earth sphere be and how far apart?

7. Moon phases New (also called the Dark Moon) - not visible
Waxing Gibbous
Third Quarter - another "half moon", but the illuminated part is opposite of the First Quarter
Full - we can see the entire illuminated portion of the moon
Waxing Crescent
Waning Crescent
First Quarter - commonly called a "half moon“
Waning Gibbous
New - back to the beginning

8. New Moon
Waxing crescent
First quarter
Waxing gibbous
Full Moon
Waning gibbous
Third quarter
Waning crescent