Week 6

Introductions

1.) How the phases of the moon occur?

As the moon orbits the Earth, the shadow changes on it.

2.) What causes the seasons?

The tilt of the Earth gives hemispheres change in weather. Closer to the 

3.) What causes a lunar eclipse?

The sun and the moon line up perfectly shadowing Earth momentarily

• Demonstrated at table groups with globe, Styrofoam ball, and light bulb

- Farthest away from sun in the summer. Hmm

- Tell students the orbit is perfect circle and tilted. Not because the sun is closer!

- Historical we always thought Earth was centered and revolved around us.

• Not religious people trying to mess with people, just all they knew and understood at the time
• 1992 formally admitted Galileo was right and we are heliocentric

- Tropic of Cancer = north & Tropic of Capricorn = south

- Summer and winter solstice

- Iowa shadow vs Equator shadow

- Once in a blue moon = 2 full moons in one month