If a Nucleus Emits an Alpha Particle,_____

question 167

Multiple Choice

If a nucleus emits an alpha particle,_____.

• A) its atomic number decreases by four and its mass number decreases by two
• B) its atomic number decreases by two and its mass number decreases by four
• C) its atomic number increases by two and its mass number decreases by two
• D) its atomic number is unchanged and its mass number is unchanged
• E) its atomic number is unchanged and its mass number decreases by four

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Definitions:

Seamount

A submarine mountain, in some cases flat-topped, that rises above the seafloor.

Pacific Ocean

The largest and deepest of the world's ocean basins, extending from the Arctic in the north to the Antarctic in the south.

Tectonics

The study of the structure and motion of the Earth's crust and its large-scale processes and features.

Structural Features

The various physical shapes, formations, or attributes that make up an area or object, especially relating to geology.