Geology Jeopardy

Minerals

100

Glass is not considered a mineral because...

it does not have a crystalline structure

200

This property can be used to show the color of a mineral in its powdered form

Streak

300

_____ is when a mineral breaks along planes of weakness in its crystalline structure

Cleavage

400

The most abundant mineral group on Earth is....

Silicates

500

The _____ of a mineral is indicative of how light reflects off of the surface of a mineral

Luster

Plate Tectonics

100

This person proposed the theory of Continental Drift

Alfred Wegener

200

The Himalayas formed at this type of plate boundary:

Collisional (Continental-Continental)

300

This geologic process and natural hazard can happen at any of the three plate boundaries

Earthquakes

400

The age of the oldest oceanic lithosphere is...

~180 Ma

500

Name one of the pieces of evidence for Plate Tectonics:

Age of the ocean floor; Magnetic stripes; Hotspots; Seafloor spreading

Cosmology

100

What is the approximate age of the Universe?

~13.8 Ga (~14 Ga)

200

What color of light will be emitted from an object that is moving toward us?

Blue (blue-shift)

300

The two most abundant elements in the universe are:

H and He

400

Which gases (name one) were common in Earth's early atmosphere?

Carbon dioxide; ammonia; methane; nitrogen; sulfur dioxide

500

The coalescing of dust, particles, and debris to form the early Earth is known as....

Accretion

Igneous rocks

100

What is the name of an igneous rock that is intermediate and aphanitic in composition?

Andesite

200

If an igneous rock takes 3 hours to cool, it would be considered...

Volcanic/extrusive

300

This texture is characteristic of an igneous rock with two distinct grain sizes:

Aphanitic Porphyritic

400

Hornblende would be considered a ____ mineral...

Mafic

500

This igneous rock is phaneritic and black in color...

Gabbro

Sedimentary/Metamorphic rocks

100

What is the name given to the parent rock that undergoes metamorphism?

Protolith

200

Weathering, erosion, deposition, and lithification produces which kind of sedimentary rock?

Clastic

300

Recrystallization causes grain sizes to ______ when a rock is subject to heat and pressure.

Increase

400

What do sedimentary rocks keep a good record of?

Depositional environment (environment in which they formed or were deposited)

500

Eclogite facies metamorphic rocks commonly form in this geologic environment:

Subduction zone