Observations of Tectonic Activity Differ on Venus and on Earth

question 44

Multiple Choice

Observations of tectonic activity differ on Venus and on Earth. A reasonable explanation is that on Venus

• A) the crust appears to be thicker and is therefore too rigid to break up into moving plates.
• B) the surface is broken into only two plates, divided by a line at an angle to the equator.
• C) the crust appears to be thinner and weaker and cannot support the creation and motion of solid plates.
• D) mantle convection appears to be more vigorous and has broken the lithosphere into a multitude of small plates instead of a few large ones.

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Definitions:

Compound

A chemical entity consisting of two or more atoms from different elements bonded together in a specific geometrical arrangement.

Spectral Data

Information derived from the analysis of a spectrum, used to identify the composition, physical properties, and structure of molecules.

Fragmentations

The breaking of chemical bonds within molecules to produce smaller, often radical or ionic, fragments, typically occurring in mass spectrometric analysis or chemical reactions.

MS

Mass spectrometry, an analytical technique used for measuring the mass-to-charge ratio of ions to identify and quantify molecules in a sample.