Colour
It is called a blue moon when the moon appears ____.
Blue.
True or false? The moon can appear blue after a forest fire.
True!
How many phases does the moon cycle have?
Eight phases.
A blue moon means the second full moon in a _____.
Month.
How many definitions does the term "blue moon" have?
2 definitions.
Can a forest fire cause a blue moon?
Yes! It launches dust into the atmosphere.
What are the three coloured wavelengths from the sun?
Red, green, and blue.
How many days does the moon cycle take?
29.5 days.
How often do blue moons happen? (Second full moon in a month)
2-3 years.
There has been occasions where even the ___ has appeared blue!
Sun!
Can moons that appear blue be predicted?
No!
Why does a blue moon happen?
Dust in the air blocks the red wavelength of light.
True or false? A phase in the moon cycle is called the waning crescent.
True! It is the last phase.
Months with __ days are most likely to have a second full moon.
31.
When is the next blue moon? (Second full moon in a month)
August 31st.
The wavelengths of light come from the ___.
Sun.
Which volcanic eruption caused the moon to be blue for over a year?
The eruption of Krakatoa.
In the moon cycle, what comes after a full moon?
Waning gibbous.
1883.
The upcoming blue moon is also a _____moon.
Supermoon.
What wavelength of light does the dust block?
The red wavelength.
What is the minimum size dust particles have to be to cause the moon to be blue?
0.7 micron or larger.
New moon.
Which month can NEVER have a blue moon?
February, because it has only 28/29 days.
The moonlight we see is reflected light from the sun. What colour is it?
White light.