Which of These Techniques Is NOT Used to Establish the Age

question 153

Multiple Choice

Which of these techniques is NOT used to establish the age of the Moon's surface features?

• A) radioactive dating of rocks
• B) observation of the degree of darkening of ejecta blanket material by solar wind particle impacts
• C) observation of the amount of natural erosion in the lunar mountains
• D) counting the density of crater impacts on the surface

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Definitions:

Mafic to Ultramafic Intrusions

The intrusion of magma rocks ranging from mafic (rich in magnesium and iron) to ultramafic (extremely rich in magnesium and iron) compositions, important in the formation of various ore deposits.

Veins

Mineral deposits that fill cracks in rocks, often distinguished by their different materials from the surrounding rock.

Hydroelectric Dams

Dams built to generate electricity by using the energy of water flowing through turbines.

Ocean Tides

The regular rise and fall of the sea level caused by the gravitational pull of the moon and sun on the Earth's oceans.