A disturbance in particle motion perpendicular to the wave velocity is called a
a. transverse wave.
b. acoustic wave.
c. standing wave.
d. longitudinal wave.
a
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A) by measuring the Doppler shifts of absorption lines in its chromosphere B) by obtaining its spectrum and classifying the spectral type C) by estimating its parallax D) by estimating its luminosity
Draw a schematic (not to scale) diagram showing the Sun, the Earth circling around it, and the other seven planets with labels for each orbit
What will be an ideal response?
Encephalization Quotient (EQ) values can be estimated for extinct species because
A) there is a linear relationship between the EQ and time, thus allowing extrapolation B) extinct species always have the same EQ value C) we can estimate their body masses from their fossilized remains and their brain masses from the sizes of their fossilized cranial cavities D) we can always find similar species in existence today to make measurements of
In its most energetic phase, a quasar can probably only last
A) a few days. B) a few years. C) a few thousand years. D) a few million years. E) a few billion years.