Objectives: D iscover flame color of metals and use that to identify unkown metals. Announcements: Show me your spectroscope for a grade and get your lab graded Opening Data: Stellar Evolution - Video (Universe: 0107-0111) Stellar Evolution Did you finish????Flame Test Lab Spectra for the elements
Objectives: Discover flame color of metals and use that to identify unkown metals. Announcements: Happy Solstice! Opening Data: wavelength to frequency Flame Test Lab Spectra for the elements
Objectives: Discover flame color of metals and use that to identify unkown metals. Announcements: Show me your spectroscope for a grade and get your lab graded Opening Data: Energy of Light = h × f Planck's Constant , h = 6.626 × 10-34 J s
Flame Test Lab Spectra for the elements
Objectives: Determine the identity of unknown elements using the spectra created with your spectroscope Announcements: Show me your spectroscope for a grade and get your lab graded Opening Data: Speed of Light3.0 x 10^8 meters/second light year = ly = 9.5 x 10^15 meters parsec = pc = 3.25 ly = 3.1 x 10^16 meters Einst ein & Relativity Flame Test Lab Spectra for the elements
Objectives: Determine the identity of unknown elements using the spectra created with your spectroscope Announcements: Finish today by EOP Opening Data: None In your journals:
Mercury spectrum drawing Scale numbers where you saw each color Calibration curve printed out Drawing for each unknown gas spectrum Scale numbers (each color) Wavelengths of each color Element Identity
Spectra for the elements
Objectives: Determine the identity of unknown elements using the spectra created with your spectroscope Announcements: Opening Data: Examine Mercury Spectrum Tube with your spectroscope and create a "calibration curve". Examine the spectra of unknown gases. Attempt to determine the identity of each sample. Spectra for the elements Build a spectroscope
Objectives: Describe how the visible spectrum fits into the rest of the EM spectrum including how to distinguish one color from the next. Announcements: Opening Data: Examine Mercury Spectrum Tube with your spectroscope and create a "calibration curve". Examine the spectra of unknown gases. Attempt to determine the identity of each sample. Diffr action gratin gs
Spectra for the elements Build a spectroscope
Objectives: Describe how the visible spectrum fits into the rest of the EM spectrum including how to distinguish one color from the next. Announcements: Opening Data: Diffr action gratin gs and Spectrum Tubes
Spectra for the elements Build a spectroscope
Objectives: Describe how the visible spectrum fits into the rest of the EM spectrum including how to distinguish one color from the next. Announcements: Do you have your cereal box? Opening Data: Diffraction gratings and Spectrum Tubes Build a spectroscope
Objectives: Describe how the visible spectrum fits into the rest of the EM spectrum including how to distinguish one color from the next. Announcements: Do you have your cereal box? Gotta have your box tomorrow as we start the building process. Let's get the answers...
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?
Objectives: Describe how the visible spectrum fits into the rest of the EM spectrum including how to distinguish one color from the next. Announcements: Diffraction & Rainbows Do you have your cereal box? Opening Data: 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?
