Which Is Larger: an Element's Atomic Number or Mass Number

question 141

Multiple Choice

Which is larger: an element's atomic number or mass number?

• A)atomic number
• B)mass number

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Definitions:

Pyroclastic Flows

Pyroclastic flows are fast-moving currents of hot gas and volcanic materials that flow down the sides of a volcano during an explosive eruption.

Volcanic Domes

Lava domes are rounded, steep-sided mounds formed from the slow extrusion of viscous lava from a volcano.

Magma Chambers

Large pools of molten rock located beneath the Earth's surface, serving as the source for volcanic eruptions.

Volcanic Domes

Rounded, bulbous formations created by the slow extrusion of very viscous lava from a volcano, which hardens close to the vent.