20 February, 2014

PHASES OF THE MOON

WHAT TIME IS IT?• Generalized time, like sunrise and noon, not the exact number you’d read off your

watch

WHAT TIME IS IT?

noon

WHAT TIME IS IT?Try it with the flashlights

WHAT TIME IS IT?• Note the time depends on where the Sun is!

suns

et

noon

WHAT TIME IS IT?

sunset

noon

sunrise

midnight

MOON PHASES• Waxing = getting bigger

• Waning = getting smaller

• New = not visible

WHAT PHASE IS IT?

suns

et

WHAT PHASE IS IT?

suns

et

WHAT PHASE IS IT?

midnight

DOES THE PHASE DEPEND ON WHAT TIME IT IS?

LABEL THE PHASESNew, waxing crescent, waning crescent, waxing gibbous, waning gibbous, 1 st quarter, 3rd quarter, full

THE PHASES

New

WaxingCrescent

1st Quarter

3rd Quarter

Full

Waning Crescent

WaxingGibbous

Waning Gibbous

CAN YOU SEE THIS MOON AT SUNSET?

CAN YOU SEE THIS MOON AT SUNSET?

suns

et

Horizon for sunset observer

PREDICTIONS!• If it is sunrise, what phases CAN you see?

• What phases can you see mid evening (between sunset and midnight)?

• What phase is “overhead” at sunrise?

• When does a first quarter moon set?

• If you want to look at faint nebula in the evening, what phases do you want the Moon to be in?