3.

A geologist has discovered a rare mineral that can only be found 200 km below the Earth’s surface. This mineral’s chemical composition is FeTiO What kind of mineral is this?


Sulfide


Native Element


Nonsilicate oxide


Rock-forming oxide

9.

How is radioactive decay used to determine the absolute age of rocks?


Parent isotopes are compared to daughter isotopes.


Daughter isotopes are compared to sister isotopes.


Isotopes of different compounds are compared.


Radioactive substances are compared to non-radioactive substances.

17.

Match the definition with the correct term: a seismic wave that travels along the surface of a medium.


Surface wave


S wave


Body wave


P wave

22.

Match the definition with the correct term: dune shaped as a crescent with an opening that faces the wind.


Longitudinal


Parabolic


Transverse


Barchan

46.

Match the definition with the correct term: large rock particles less than 64 mm.


Cinder cone


Lava


Lapilli


Pluton

43.

Which of the following is a probable source of Earth’s magnetic field?


The Sun


The Earth’s tides


The Moon


Earth’s outer iron core

32.

______ reflects how close a measurement is to the true value of the thing being measured and _______ is the exactness of that measurement.


Precision; accuracy


Validity; precision


Accuracy; precision


Accuracy; validity