ACT practice science p2

Front

At the wavelengths used in Study 1, as the wavelength of the light increases, the reflectances of the S allotropes and of SO2 do which of the following?

Back

Increase only, Increase, then decrease

Front

According to Study 3, compared with the corresponding average reflectance for small plumes, large plumes on Io have an average reflectance at a given wavelength that is:

Back

always lower.

Front

According to Study 1, the reflectance of white S at a wavelength of 0.40 µm is closest to which of the following? Options: 0.0, 0.1, 0.2, 0.3

Back

0.2

Front

According to Study 1 and Study 2, the crater floor of the volcano Pele has reflectances most similar to which of the following S allotropes? White S, Orange S, Red S, Brown S

Back

Brown S

Front

If the averaged reflectances for large plumes and for small plumes had been measured at a wavelength of 0.61 µm in Study 3, those reflectances would have been closest to which of the following? Options: 0.2 0.5, 0.5 0.2, 0.5 0.9, 0.9 0.5

Back

0.5 0.9

Front

According to Study 1, white S has a reflectance of 0.98 at a wavelength of 0.60 µm. This means that white S reflects:

Back

98% of the 0.60 µm wavelength light that strikes its surface.