Science/Strand V/Content Standard 4/High School/Benchmark 2
Instructional Example
Benchmark Question: Where are we?
Focus Question: How do scientists determine how
objects are moving in space?
The teacher will review the
Doppler Effect with students and one or more demonstrations using sound or
water. The teacher will review a light spectrum and remind students that in
the visible spectrum, red light is a longer wavelength and lower frequency.
The teacher will provide
students with a reference spectrum of an element, which is available in
most physics or astronomy texts.
Students will compare the
wavelength of characteristic lines from the reference spectrum with those
same lines in the spectrum of a star. With a partner, they will calculate
the amount and direction of the wavelength shift in the star.
Students will determine the
direction of relative movement by noting the direction of wavelength shift
(red = moving away, blue = moving toward).
Students will determine the
relative speed of the object by comparing the size of the wavelength shift
(larger shift = faster moving).
Constructing: (SCI.I.1.HS.1),
(SCI.I.1.HS.3), (SCI.I.1.HS.4),
(SCI.I.1.HS.5).
Reflecting: (SCI.II.1.HS.1),
(SCI.II.1.HS.2).
