East South West

Moon Phases Simulation

1. Sketch the shape of the Moon in each view.

2. Measure separation of Sun and Moon in “finger-widths”

3. Record that separation by the sketched shape.

We will observe the Sun and Moon every few days right around sunset time.

Imagine the horizon in these pictures extending all the way from one side of the sky to the other, east to west.

East South West

Day 1

Sun

East South West

Day 3

East South West

Day 5

East South West

Day 8

East South West

Day 12

East South West

Day 12

We are about to go 3 days more: to Day 15.

• Will the Moon even be visible to us?

• Where do you think the Moon will be?

East South West

—> NIGHT 12 <—

Imagine the Earth rotating, the sun sets, and the whole night now goes by in 12 hours or so…

8

East South West

East South West

Good morning!Day 13

(Sun is now in the East: Sunrise)

MoonSun

Measure separation of Sun and Moon

East South West

Day 15

Sun

East South West

Day 19

Sun

East South West

Day 22

Sun