The oldest rocks that contain abundant fossils are: w) Precambrian x) Paleozoic y) Mesozoic z) Cenozoic

The oldest rocks that contain abundant fossils are: w) Precambrian x) Paleozoic y) Mesozoic z) Cenozoic
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ANSWER: X -- PALEOZOIC 
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The longest era was the w) Mesozoic x) Precambrian y) Cenozoic z) Paleozoic

Description : The longest era was the w) Mesozoic x) Precambrian y) Cenozoic z) Paleozoic

Last Answer : ANSWER: X -- PRECAMBRIAN

Angiosperms developed during the: w) Precambrian period x) Cenozoic era y) Paleozoic era z) Mesozoic era

Description : Angiosperms developed during the: w) Precambrian period x) Cenozoic era y) Paleozoic era z) Mesozoic era

Last Answer : ANSWER: Z -- MESOZOIC ERA

The disappearance of the dinosaurs also marks the end of which geological era? w) Precambrian x) Cambrian y) Mesozoic (pron: mez-ah-zo-ik) z) Cenozoic (pron: see-nah-zo-ik)

Description : The disappearance of the dinosaurs also marks the end of which geological era? w) Precambrian x) Cambrian y) Mesozoic (pron: mez-ah-zo-ik) z) Cenozoic (pron: see-nah-zo-ik)

Last Answer : ANSWER: Y -- MESOZOIC

Which of the following is the oldest period of tim lasting from the beginnings of the earth to approximately 570 million year ago? w) Precambrian x) Pleistocene (pron: ply-sto-sin) y) Miocene (pron: my-o-sin) z) Jurassic

Description : Which of the following is the oldest period of tim lasting from the beginnings of the earth to approximately 570 million year ago? w) Precambrian x) Pleistocene (pron: ply-sto-sin) y) Miocene (pron: my-o-sin) z) Jurassic

Last Answer : ANSWER: W -- PRECAMBRIAN

This period in earth history is the earliest subdivision of the Paleozoic Era. Many of the oldest known invertebrate fossils occur in this period, the principal types being trilobites, chitinous brachiopods, and primitive graptolites. Name this period.

Description : This period in earth history is the earliest subdivision of the Paleozoic Era. Many of the oldest known invertebrate fossils occur in this period, the principal types being trilobites, chitinous brachiopods, and primitive graptolites. Name this period. 

Last Answer : ANSWER: CAMBRIAN PERIOD

Fossils are rarely found in such rocks as: w) limestone x) sandstone y) shale z) granite

Description : Fossils are rarely found in such rocks as: w) limestone x) sandstone y) shale z) granite

Last Answer : ANSWER: Z -- GRANITE

Which of the following mountain ranges was formed during the Mesozoic era? w) Rocky Mountains x) Cascades y) Appalachian z) Sierra Nevada

Description : Which of the following mountain ranges was formed during the Mesozoic era? w) Rocky Mountains x) Cascades y) Appalachian z) Sierra Nevada

Last Answer : ANSWER: Z -- SIERRA NEVADA

Which geologic period does not belong in the Mesozoic era? w) Permian x) Cretaceous y) Triassic z) Jurassic

Description : Which geologic period does not belong in the Mesozoic era? w) Permian x) Cretaceous y) Triassic z) Jurassic

Last Answer : ANSWER: W -- PERMIAN

The fossils found in the tar pits of Rancho La Bre in Los Angeles included all of the following EXCEPT one. Which one was absent? w) saber-toothed cat x) dire wolf y) wooly mammoth z) giant ground sloth

Description : The fossils found in the tar pits of Rancho La Bre in Los Angeles included all of the following EXCEPT one. Which one was absent? w) saber-toothed cat x) dire wolf y) wooly mammoth z) giant ground sloth

Last Answer : ANSWER: Y -- WOOLY MAMMOTH

What is considered to be the oldest lake in North America? w) Mono Lake, CA x) Lake Superior, MI y) The Great Salt Lake, UT z) Crater Lake, OR

Description : What is considered to be the oldest lake in North America? w) Mono Lake, CA x) Lake Superior, MI y) The Great Salt Lake, UT z) Crater Lake, OR

Last Answer : ANSWER: W -- MONO LAKE, CA

Continents have three major features. The oldest areas of each continent are the: w) folded mountains x) stable platforms y) mountain cores z) shields

Description : Continents have three major features. The oldest areas of each continent are the: w) folded mountains x) stable platforms y) mountain cores z) shields

Last Answer : ANSWER: Z -- SHIELDS

Of the following four geologic periods, which is the oldest? w) Devonian x) Silurian y) Permian z) Jurassic

Description : Of the following four geologic periods, which is the oldest? w) Devonian x) Silurian y) Permian z) Jurassic

Last Answer : ANSWER: X -- SILURIAN

Rocks formed in layers are said to be: w) crystalline x) stratified y) chemical z) metamorphosed

Description : Rocks formed in layers are said to be: w) crystalline x) stratified y) chemical z) metamorphosed

Last Answer : ANSWER: X -- STRATIFIED

In which of the following mountain ranges are volcanic rocks least common? w) Andes x) Cascades y) Himalayas z) Sierra Nevadas

Description : In which of the following mountain ranges are volcanic rocks least common? w) Andes x) Cascades y) Himalayas z) Sierra Nevadas

Last Answer : ANSWER: Y -- HIMALAYAS

What type of rocks are formed as a result of volcanic activity? w) metamorphic x) sedimentary y) igneous z) Hudson

Description : What type of rocks are formed as a result of volcanic activity? w) metamorphic x) sedimentary y) igneous z) Hudson

Last Answer : ANSWER: Y -- IGNEOUS

Which of the following is the most important chemically-active fluid involved in the formation of rocks? w) hydrochloric acid x) sulfuric acid y) water z) methane

Description : Which of the following is the most important chemically-active fluid involved in the formation of rocks? w) hydrochloric acid x) sulfuric acid y) water z) methane

Last Answer : ANSWER: Y -- WATER

Igneous rocks that form from magma are known as: w) minerals x) granite y) intrusive rocks z) gneiss (pron: nice)

Description : Igneous rocks that form from magma are known as: w) minerals x) granite y) intrusive rocks z) gneiss (pron: nice)

Last Answer : ANSWER: Y -- INTRUSIVE ROCKS

Which one of the following minerals does NOT contain silica tetrahedrons? w) quartz x) muscovite y) halite z) orthoclase

Description : Which one of the following minerals does NOT contain silica tetrahedrons? w) quartz x) muscovite y) halite z) orthoclase

Last Answer : ANSWER: Y -- HALITE

What event marked to the end of the Mesozoic era and the beginning of the Cenozoic era?

Description : What event marked to the end of the Mesozoic era and the beginning of the Cenozoic era?

Last Answer : "The Great Extinction" marked the end of the Mesozoic Era and the beginning of the Cenozoic Era.

Pangaea is the name of a former continent that included: w) all the continents x) only Europe and Asia y) only South America and Africa z) only North and South America

Description : Pangaea is the name of a former continent that included: w) all the continents x) only Europe and Asia y) only South America and Africa z) only North and South America

Last Answer : ANSWER: W -- ALL THE CONTINENTS

What mineral is the most dense? w) hematite x) cinnabar y) marcasite z) rhodochrosite

Description : What mineral is the most dense? w) hematite x) cinnabar y) marcasite z) rhodochrosite

Last Answer : ANSWER: X -- CINNABAR

Sulfuric acid aerosols from the eruption of Mt. Pinatubo reduced the rate of global warming last year. They also contributed to the record size of: w) acid rainfalls in Europe x) the anchovy catch off Peru y) the ozone hole over Antarctica z) fish kills in the Amazon River

Description : Sulfuric acid aerosols from the eruption of Mt. Pinatubo reduced the rate of global warming last year. They also contributed to the record size of: w) acid rainfalls in Europe x) the anchovy catch off Peru y) the ozone hole over Antarctica z) fish kills in the Amazon River

Last Answer : ANSWER: Y -- THE OZONE HOLE OVER ANTARCTICA

Cloud droplets unite most easily to form raindrops in clouds containing which of the following substances? w) ozone x) plant pollen y) carbon tetrachloride z) large salt crystals

Description : Cloud droplets unite most easily to form raindrops in clouds containing which of the following substances? w) ozone x) plant pollen y) carbon tetrachloride z) large salt crystals

Last Answer : ANSWER: Z -- LARGE SALT CRYSTALS

Which of the following is an average number of inches of snow equal to one inch of rain? w) 1 inch x) 5 inches y) 10 inches z) 25 inches

Description : Which of the following is an average number of inches of snow equal to one inch of rain? w) 1 inch x) 5 inches y) 10 inches z) 25 inches

Last Answer : ANSWER: Y -- 10 inches

When the difference in the temperature of the wet-bulb thermometer and dry-bulb thermometer is large, what does it indicate about the air? w) it is very dry x) it is nearly saturated y) it is very warm z) it is very cold

Description : When the difference in the temperature of the wet-bulb thermometer and dry-bulb thermometer is large, what does it indicate about the air? w) it is very dry x) it is nearly saturated y) it is very warm z) it is very cold

Last Answer : ANSWER: W -- IT IS VERY DRY

On which of the following does the capacity of a kilogram of air for holding water depend? w) the air pressure x) the air temperature y) the dust content of the air z) the ions in the air

Description : On which of the following does the capacity of a kilogram of air for holding water depend? w) the air pressure x) the air temperature y) the dust content of the air z) the ions in the air

Last Answer : ANSWER: X -- THE AIR TEMPERATURE 

What is considered to be the approximate difference in average temperature between the "little ice age" and today? w) 1 to 3 degrees centigrade x) 5 to 8 degrees centigrade y) 10 to 12 degrees centigrade z) 15 to 20 degrees centigrade

Description : What is considered to be the approximate difference in average temperature between the "little ice age" and today? w) 1 to 3 degrees centigrade x) 5 to 8 degrees centigrade y) 10 to 12 degrees centigrade z) 15 to 20 degrees centigrade

Last Answer : ANSWER: W -- 1 TO 3 DEGREES CENTIGRADE

What form of runoff is water that flows down a slope within the upper layers of the soil rather than on top of them? w) interflow x) extraflow y) endoflow z) detrital runoff

Description : What form of runoff is water that flows down a slope within the upper layers of the soil rather than on top of them? w) interflow x) extraflow y) endoflow z) detrital runoff

Last Answer : ANSWER: W -- INTERFLOW

When does the air cool most rapidly? Is it during w) a cloudy day x) a cloudy night y) a sunny day z) a clear night

Description : When does the air cool most rapidly? Is it during w) a cloudy day x) a cloudy night y) a sunny day z) a clear night

Last Answer : ANSWER: Z -- A CLEAR NIGHT

The approximate average yearly rainfall in centimeters for the United States is: w) 25 centimeters x) 50 centimeters y) 75 centimeters z) 100 centimeters

Description : The approximate average yearly rainfall in centimeters for the United States is: w) 25 centimeters x) 50 centimeters y) 75 centimeters z) 100 centimeters

Last Answer : ANSWER: Y -- 75 CENTIMETERS

Valleys formed by glaciers always have which of the following characteristics? w) U-shaped cross sections x) straight courses y) uniform slopes z) bedrock floors

Description : Valleys formed by glaciers always have which of the following characteristics? w) U-shaped cross sections x) straight courses y) uniform slopes z) bedrock floors

Last Answer : ANSWER: W -- U-SHAPED CROSS SECTIONS

When the front of a glacier is stationary for a long time, the glacier will do which of the following? w) form many crevasses x) melt away y) not erode its bed z) build a large terminal moraine

Description : When the front of a glacier is stationary for a long time, the glacier will do which of the following? w) form many crevasses x) melt away y) not erode its bed z) build a large terminal moraine

Last Answer : ANSWER: Z -- BUILD A LARGE TERMINAL MORAINE

Carbon dioxide is an important greenhouse gas. What is the current rate in parts per million per year of atmospheric increase of this gas? w) 0.15 ppm per year (parts per million) x) 1.5 ppm per year y) 15 ppm per year z) 150 ppm per year

Description : Carbon dioxide is an important greenhouse gas. What is the current rate in parts per million per year of atmospheric increase of this gas? w) 0.15 ppm per year (parts per million) x) 1.5 ppm per year y) 15 ppm per year z) 150 ppm per year 

Last Answer : ANSWER: X -- 1.5 PPM PER YEAR 

The largest single component, by weight, in the average American landfill is: w) toxic waste x) diapers y) newspapers z) pizza boxes

Description : The largest single component, by weight, in the average American landfill is: w) toxic waste x) diapers y) newspapers z) pizza boxes

Last Answer : ANSWER: Y -- NEWSPAPERS

North American Indians used this mineral of volcanic origin to make tips for arrows: w) obsidian x) quartz y) flint z) pumice

Description : North American Indians used this mineral of volcanic origin to make tips for arrows: w) obsidian x) quartz y) flint z) pumice

Last Answer : ANSWER: W -- OBSIDIAN

Which animal is the center of the timber-harvest controversy in the Pacific Northwest? w) blackfooted ferret x) California condor y) northern spotted owl z) gray wolf

Description : Which animal is the center of the timber-harvest controversy in the Pacific Northwest? w) blackfooted ferret x) California condor y) northern spotted owl z) gray wolf

Last Answer : ANSWER: Y -- NORTHERN SPOTTED OWL

Biomass energy is w) formed through photosynthesis x) caused by heat due to the large mass of the Earth y) has been used for only a few years z) the predominant source of commercial heat energy in the northern regions of the United States

Description : Biomass energy is w) formed through photosynthesis x) caused by heat due to the large mass of the Earth y) has been used for only a few years z) the predominant source of commercial heat energy in the northern regions of the United States

Last Answer : ANSWER: W -- FORMED THROUGH PHOTOSYNTHESIS

In geological studies, the Mohorovicic Discontinuity, commonly called the Moho, is the boundary between the w) the mantle and the crust x) asthenosphere and the mantle y) mantle and the outer core z) outer core and the inner core

Description : In geological studies, the Mohorovicic Discontinuity, commonly called the Moho, is the boundary between the w) the mantle and the crust x) asthenosphere and the mantle y) mantle and the outer core z) outer core and the inner core

Last Answer : ANSWER: W -- THE MANTLE AND THE CRUST

Which of the following is the approximate ratio of the area of the continents to the area of the earth's oceans? w) 2:1 x) 1:1 y) 2:5 z) 1:10

Description : Which of the following is the approximate ratio of the area of the continents to the area of the earth's oceans? w) 2:1 x) 1:1 y) 2:5 z) 1:10

Last Answer : ANSWER: Y -- 2:5

Which of the following distances in kilometers is closest to the diameter of the earth? w) 750 kilometers x) 2,750 kilometers y) 12,750 kilometers z) 127,500 kilometers

Description : Which of the following distances in kilometers is closest to the diameter of the earth? w) 750 kilometers x) 2,750 kilometers y) 12,750 kilometers z) 127,500 kilometers

Last Answer : ANSWER: Y -- 12,750 KILOMETERS 

Safety aside, for which of the following reasons is alcohol used in preference to mercury in a minimum thermometer? w) Alcohol has a higher boiling point x) Alcohol has a lower freezing point y) Alcohol contracts more uniformly z) Alcohol can be dyed for visibility

Description : Safety aside, for which of the following reasons is alcohol used in preference to mercury in a minimum thermometer? w) Alcohol has a higher boiling point x) Alcohol has a lower freezing point y) Alcohol contracts more uniformly z) Alcohol can be dyed for visibility

Last Answer : ANSWER: X -- ALCOHOL HAS A LOWER FREEZING POINT

The core of the earth is thought to be composed of which of the following? w) basalt and granite x) compressed gases y) uranium and lead z) iron and nickel

Description : The core of the earth is thought to be composed of which of the following? w) basalt and granite x) compressed gases y) uranium and lead z) iron and nickel

Last Answer : ANSWER: Z -- IRON AND NICKEL

Which of the following is the mineral name for ordinary salt? w) biotite x) calcite y) halite z) dolomite

Description : Which of the following is the mineral name for ordinary salt? w) biotite x) calcite y) halite z) dolomite

Last Answer : ANSWER: Y -- HALITE

Which of the following minerals is a source of lead? w) Bauxite x) Hematite y) Malachite z) Galena

Description : Which of the following minerals is a source of lead? w) Bauxite x) Hematite y) Malachite z) Galena

Last Answer : ANSWER: Z -- GALENA

A geologic feature called a kimberlite indicates the possibility of thepresence of which of the following? w) rubies x) diamonds y) sapphires z) opals

Description : A geologic feature called a kimberlite indicates the possibility of thepresence of which of the following? w) rubies x) diamonds y) sapphires z) opals

Last Answer : ANSWER: X -- DIAMONDS

The wind-chill index outside is -10 F when the wind blows at 20 mph and the air temperature is 20 F. To what temperature will a dry object cool when placed outside? w) 20 F x) 10 F y) -10 F z) -20 F

Description : The wind-chill index outside is -10 F when the wind blows at 20 mph and the air temperature is 20 F. To what temperature will a dry object cool when placed outside? w) 20 F x) 10 F y) -10 F z) -20 F

Last Answer : ANSWER: W -- 20 F

The principal mineral in most sand beaches is w) quartz x) orthoclase y) magnetite z) muscovite

Description : The principal mineral in most sand beaches is w) quartz x) orthoclase y) magnetite z) muscovite

Last Answer : ANSWER: W -- QUARTZ

The air around a high pressure area circulates: w) clockwise in the Northern Hemisphere x) counterclockwise in the Northern Hemisphere y) clockwise in the Southern Hemisphere z) in either direction regardless of hemisphere

Description : The air around a high pressure area circulates: w) clockwise in the Northern Hemisphere x) counterclockwise in the Northern Hemisphere y) clockwise in the Southern Hemisphere z) in either direction regardless of hemisphere

Last Answer : ANSWER: W -- CLOCKWISE IN THE NORTHERN HEMISPHERE 

On the Richter scale, a magnitude 6 earthquake is how much larger than a magnitude 4 earthquake? w) 1.5 times x) 4 times y) 15 times z) 100 times

Description : On the Richter scale, a magnitude 6 earthquake is how much larger than a magnitude 4 earthquake? w) 1.5 times x) 4 times y) 15 times z) 100 times

Last Answer : ANSWER: Z -- 100 TIMES

The rock in which ground water is LEAST likely to form caverns is: w) sandstone x) limestone y) salt z) rock gypsum

Description : The rock in which ground water is LEAST likely to form caverns is: w) sandstone x) limestone y) salt z) rock gypsum

Last Answer : ANSWER: W -- SANDSTONE