Blog

Most, but not all, geologists believe the Earth’s age to be about______________ years.

The Richter scale for the severity of earthquakes has magnitudes expressed in whole numbers, usually between 3 and 9, but since it is a logarithmic scale, each whole-number step represents about _________ times more energy than the preceding whole-number step.

Most earthquake damage is caused by

Hardness is also a property used for classification of minerals using the Mohs scale. Which of the following is the softest mineral?

The lowest places on Earth’s surface are called __________ trenches.

Which of the following radionuclides has the shortest half-life?

The modern geological theory that considers the Earth’s lithosphere to be made up of a series of solid sections or segments that are constantly interacting with one another in very slow motion is known as _____.

The geologic time scale is divided into the time units, from largest time unit to smallest time unit, ______________________________.

Which of the following is the era sometimes called the age of reptiles?

Quartzite is a metamorphic rock that was created by applying pressure and heat to