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Answers to the Geology & Earth Science Quiz



Geology Quiz #21
What Mineral is This?

Clues: The answer is not magnetite, however, this mineral is magnetic.

Answer: Pyrrhotite.

Winners: Jason Fredricks of Hamilton, New York. Matthew Little of Tampa, Florida. Matthew Graham-Ellison of Copacabana NSW, Australia. Beth Nichols Boyd of Prescott, Arizona. Guerry McClellan of Gainesville, Florida.


Geology Quiz #20
What country is the home of this scene?

Clues: This scene was painted by a student who lives not very far from this spectacular mountain site. It is located in the southern hemisphere and the buildings in the scene were generalized slightly by the artist.

Answer: Peru. We received hundreds of correct answers. We also received lots of "Machu Pichu" answers. That was incorrect. The question asked for a country.

Winners: Bryan Debus of Ann Arbor, Michigan. Mertcan Ozbakir of Ankara, Turkey. Barry Shaulis of Houston, Texas. Randy Post of Tucson, Arizona. Emma Bradley of Llanharan, South Wales, UK. Whit Patterson of Spartansburg, South Carolina. Rachel Pirot of Dallas, Oregon. Jessica Stika of Flower Mound, Texas.


Geology Quiz #19
Can you identify this Mineral?

Clues: These are specimens of a silicate mineral that is often used as a gemstone. This mineral occurs in a wide range of colors and the "sherry" color shown here is very typical. These particles are about ten millimeters across.

Answer: Topaz.

Winners: Brooke Hack of Austin, Texas. Sandeep Kumar of Haryana, India. Jeffrey Metius of Lakewood, Colorado. Dennis Charlton of Newcastle upon Tyne, UK. Kim Bosco of Manhattan, Kansas. Miguel Angel Izarra of Bilbao, Spain. Amy Zink of Tempe, Arizona. Carrie Wirth of Davenport, ND.


Geology Quiz #18
Can you identify this Mineral?

Clues: These particles are all representatives of a single mineral group which occurs in a wide range of colors. When nicely colored and transparent it is often cut as a gemstone, although it has a number of other uses. These particles are about five to fifteen millimeters across.

Answer: Garnet.

Winners: Joe Knight of Fresno, California. Yong Zhang of Beijing, China. Arlene Castleman of Lodi, New Jersey. Shailesh Agrawal of West Bengal, India. Jerome Smesny of Dayton, Texas. We received dozens of correct answers for this quiz. The five randomly chosen winners are listed above.


Geology Quiz #17
Can you identify this Object?

Clues: There are only a few possibilities for this one - even though it appears that you have very little to go on. Your clues: 1) found on Earth's surface, and, 2) magnetic.

Answer: Iron Meteorite.

Winners: Yayeh Desalegn of Addis Ababa, Ethiopia. Brittany Weeks of Starksville, Mississippi. Brian Archuleta of Phoenix, Arizona. Andrzej Gluszynski of Strzegom, Poland. Sandra Pardoe of Mansfield, Pennsylvania. We received dozens of correct answers for this quiz. The five randomly chosen winners are listed above.


Geology Quiz #16
Can you identify this Mineral?

Clues: There are lots of possibilities for this one and you don't have much to go on. Therefore, we expect that this quiz will be more of an educated guessing game. Your main clue is: It is probably not the first mineral that comes to your mind when you view this photo. The specimen is about two centimeters across.

Answer: Beryl.

Winners: Matthew Graham-Ellison of Copacabana, New South Wales, Australia. David Swales of Keswick, Virginia. Alicia Rosales of Lawrence, Kansas. Rose Pool of Columbia, Missouri. Brian Archuleta of Phoenix, Arizona. We received dozens of correct answers for this quiz. The five randomly chosen winners are listed above.


Geology Quiz #15
Can you identify this island?

Clues: This is a Landsat 2000 Geocover image of a few islands. What is the name of the largest island? It is about 18 miles across it's widest dimension.

Answer: Michipicoten Island, Lake Superior.

Winners: Kevin Nelstead of Bucuresti, Romania. Paul Koller of Dayton, Ohio. David Gibbons of Santa Rosa, California. David Miller of Houston, Texas.


Geology Quiz #14
Can you identify this island?

Clues: This is a Landsat 2000 Geocover image of a few islands. What is the name of the largest island? It is about 100 kilometers across at its widest point. It is surrounded by salty water.

Answer: Majorca. Also Mallorca or Palma de Mallorca.

Winners: Al Smith of Suffern, New York. Kaitlyn Guinn of Mansfield, Pennsylvania. Jeffrey Metius of Lakewood, Colorado. Lucian Farmer of Corvallis, Oregon. One anonymous winner from Hampshire, UK. We received dozens of correct answers for this quiz. The five randomly chosen winners are listed above.


Geology Quiz #13
Can you identify this island group?

Clues: This is a Landsat 2000 Geocover image of a group of islands. What is the name of this island group? It is about 40 miles across at its widest point.

Answer: The Faroe Islands (located in the North Atlantic).

Winners: Leslie Fox of Dublin, Ireland. Jeffery Knapp of Mansfield, Pennsylvania. Kristen Edwards of Houston, Texas. Ronald Vicedo of Makati City, Philippines. One anonymous winner from New South Wales, Australia. We received dozens of correct answers for this quiz. The five randomly chosen winners are listed above.


Geology Quiz #12
Can you identify this mineral?

Clues: This is a close-up photograph of a piece of marble. You are to identify the brown grains which are one to two millimeters across.

Answer: phlogopite.

Winners: J. Howard of Richmond, Kentucky.


Geology Quiz #11
Can you identify this mineral?

Clues: Contains copper - but you probably guessed that from the color.

Answer: chrysocolla.

Winners: Keith Olson of Portland, Oregon. Gregory LeBlanc of Lebanon, NH.


Geology Quiz #10
Can you identify this island?

Clues: This is a Landsat Geocover image acquired in the 1990's. The island is more than 50 kilometers across but less than 100 kilometers across.

Answer: This is an island south of Cuba. It is known by many different names, including: Isle of Youth, Isle of Pines and Isla de la Juventud.

Winners: Keith Olson of Portland, Oregon. Alan Bickham of Shreveport, Louisiana. Rachel Dunham of Redwood City, California. Josh Stover of Morgantown, West Virginia


Geology Quiz #9
Can you identify this location?

Clues:This is a Landsat Geocover image taken about 2000. That's an ocean on the west side of the image.

Answer: Perth, Australia.

Winners: Alan Bickham of Shreveport, Louisiana, USA. Melissa Hutchinson of Perth, Australia. Howard Gwynne of Roleystone, Western Australia. Leonardo Antônio Custodio Souza of Tom Price, Western Australia.


Geology Quiz #8
Can you identify this material?

Clues: You must identify the two materials - the white material and the metallic material. Both must be identified correctly to win.

Answer: Chalcopyrite on dolomite.

Winner: Christina Clark of Valencia, California.


Geology Quiz #7
Can you identify this material?

Clues: These translucent to transparent grains are between two and five millimeters in diameter. The material is not a mineral or a glass.

Answer: Amber

Winners: Robin Bray of London, UK. Dave Willis of Trenton, South Carolina. Richard Jakiel of Douglasville, Georgia. Mike Adkins of St. Charles, Missouri.


Geology Quiz #6
Can you identify this lake?

Clues: A large lake beside a major city of the Northern Hemisphere. This image was produced using data from NASA's Landsat 2000 Geocover Collection.

Answer: St. Clair Lake (Near Detroit, Michigan, USA)

Winners: Margaret Guderyon of Milwaukee, Wisconsin. Wendy Meyer of Mersch, Luxembourg. Michael Sorensen, Odessa, Texas.


Geology Quiz #5
Can you identify this city?

Clues: A Northern Hemisphere city. This image was produced using data from NASA's Landsat 2000 Geocover Collection.

Answer: Tokyo, Japan

Winner: Buz Davis of Atlanta, Georgia.


Geology Quiz #4
Can you identify this substance?

Clues: It is naturally occuring mineral material. It contains iron.

Answer: Ankerite. The photo shows about 5 millimeters of specimen width.

Winner: Shelly Patterson of Los Angeles, California.


Geology Quiz #3
Can you identify this substance?

Clues: It is naturally occuring. It is a mineral that contains oxygen.

Answer: Hematite (variety: martite - a pseudomorph after magnetite). The photo shows about 20 millimeters of specimen width.

Winners: Shailesh Agrawal of West Bengal, India. Iqbal Hussain or Riyadh, Saudi Arabia. Darlene Wolski of Booneville, Arkansas. Alan Fong of Crofton, Maryland. David Lee of Mims, Florida.


Geology Quiz #2
Can you identify this specimen?

Clues: It is naturally occuring. It is inorganic. It is composed of the mineral quartz.

Answer: Petrified wood. This is a close-up photo of piece of petrified wood showing "growth ring" structures. The photo shows about 50 millimeters of specimen width.

Winner: Neil Johnson of Bloomington, Indiana


Geology Quiz #1
Can you identify this substance?

Clues: It is naturally occuring. It is inorganic. It is a solid. It has a definite chemical composition. It has an ordered internal structure.

Answer: Hematite. This is a close-up photo of a specimen of oolitic hematite from Clinton, New York.. The oolites are about 3 millimeters in diameter.

Winners: Nicole Kyger of Twentynine Palms, California and Lawrence Dee of Chino Valley, Arizona



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