Announcements: All late work is due now
Do you have your cereal box?
Opening Data: Electromagnetic Spectrum
Remember those other questions?
(these should be in your notes...)
- Describe the idea of the celestial sphere.
- What units is declination measured in?
- What are the units used to measure right ascension?
- Compare rt. ascension & declination to latitude and longitude on the earth.
- What is our latitude and longitude here in the classroom?
- What are lat. and long. measured in?
- Where on the Earth are latitude and longitude measured from (where's the "origin")?
- What's the 0,0 of rt. asc. & decl. called?
- Where is that located in the sky (which constellation)?
- When (on the calendar) is the Earth closest to the sun?
- What celestial event is closest to perihelion?
- Describe where the sun is during the vernal equinox.
- What day (typically) is the autumnal equinox?
- What happens during an equinox?
- What is the longest day of the year in the southern hemisphere?
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