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mineral rocks earth science
| Question | Answer |
|---|---|
| The process of breaking down of rocks into smaller particles is called | weathering |
| Three main rock types are sedimentary, igneous and | metamorphic |
| Sedimentary rocks are formed by the | deposition, compaction and cementing of sediments |
| In a river, deposition of sediments occurs most in water flow which is | slow |
| The name given to layers of sedimentary rock is | strata |
| Cementation of sedimentary rocks is the result of the chemical named | calcium carbonate |
| Examples of sedimentary rocks are | sandstone, shale and conglomerate |
| Limestone is formed from | crushed shells or coral |
| Molten rock beneath the earth's surface is | magma |
| Igneous rocks that cool deep beneath the earth's surface are | plutonic |
| Igneous rocks that cool quickly from lava are called | volcanic |
| Igneous rocks such as basalt that cools quickly have crystals that are | small |
| An example of an igneous rock that cooled slowly beneath the earth's surface is | granite |
| Talc is the softest mineral. The scale used to test hardness of minerals for identification is | Moh's Scale |
| Rocks that were originally either sedimentary, igneous or metamorphic and have been changed further by heat and pressure are called: | metamorphic |
| How many oxygen atoms are in a silicon-oxygen tetrahedron? A. 2 B. 3 C. 4 D. 5 | 4 |
| The ten most common minerals make up what percentage of the earth's crust? A. 90% B. 50% C. 20% D. 10% | 90% |
| The two most abundant elements in common minerals are A. calcium & manganese B. silicon & oxygen C. iron & magnesium D. carbon & potassium | silicon & oxygen |
| The heft or relative weight of a mineral sample is directly related to the mineral's A. luster B. cleavage C. density D. hardness | density |
| A mineral that splits into even sheets shows which of the following properties? A. low density B. consistent streak C. good cleavage D. triclinic crystal shape | good cleavage |
| The most common magnetic mineral is A. hematite B. magnatite C. halite D. uranium | magnatite |
| Diamond has which of the following types of luster? A. metallic B. brilliant C. glassy D. pearly | brilliant |
| Which of the following is an example of a mineral? A. coal B. concrete C. steel D. quartz | quartz |
| The minerals gold and copper are examples of A. silicate minerals B. organic minerals C. native minerals D. radioactive minerals | native minerals |
| Is quartz a mineral? Yes or No Think about it. Does anybody make quartz? Where do you think it is found? Click on the answer you think is correct - Yes or No | Yes |
| Is granite a mineral? Yes or No Think about it. What do you think it is made of? It has lots of different types of crystals and they are all jumbled up together. Click on the answer you think is correct - Yes or No | no, it's a rock. |
| Is gold a mineral? Yes or No Think about it. Can you make gold? You make gold jewellery, but where do you find gold nuggets? Click on the answer you think is correct - Yes or No | yes |
| Is amber a mineral? Yes or No Think about it. Do you know where amber comes from? We do not make amber, but something else can. Click on the answer you think is correct - Yes or No | no, not a mineral. It may look like a mineral, and it is often used as a gemstone, like citrine or topaz, but it is actually the fossilised resin from prehistoric trees. It is organic, and the chemical composition can vary |
| Is charcoal a mineral? Yes or No Think about it. You find it after you have had a fire. It is black and looks like a mineral, but where does it come from? Click on the answer you think is correct - Yes or No | no |
| Is hematite a mineral? Yes or No Think about it. It may not look like a gemstone, but where do we find it? What do you think it looks like? Do you think people make it? Click on the answer you think is correct - Yes or No | Yes |
| Are icebergs minerals? Yes or No Think about it. They are not found in underground mines, but do icebergs occur naturally? Are icebergs solid? What are they made of? Click on the answer you think is correct - Yes or No | yes |
| ______ is a solid in which the atoms are arranged in closely repeating patterns. a. A crystal b. An ore c. A mineral d. An element | A crystal, Crystals have a repeated, orderly pattern of atoms. |
| You find a red gemstone that is from Sri Lanka. What gem is this most likely? a. emerald b. ruby spinel c. sapphire d. topaz | ruby spinel, Rubies are red gemstones from the element spinel. |
| What is the easiest way to tell if a sample is gold or pyrite? a. streak b. hardness c. appearance d. luster | streak, A streak test with pyrite will leave a black streak, and gold leaves a yellow streak. |
| Glass is not a crystal because __________. a. it is not crystalline b. it fractures c. it is transparent d. it is a solid | it is not crystalline, Glass, also not produced naturally, is not a crystal because it does not have a crystalline structure in its atoms. |
| Large crystals can form when magma __________. a. melts b. erupts from a volcano c. cools quickly d. cools slowly | cools slowly, When magma cools slowly into rock, large crystals can form. |
| Which is an example of a mineral with a nonmetallic luster? a. quartz b. gold c. pyrite d. graphite | quartz, Quartz has luster, but it is not metallic. |
| All minerals are __________. a. naturally occurring b. unordered c. organic solids d. made in a lab | naturally occurring, Minerals are naturally occurring inorganic solids with a definite chemical composition and orderly arrangement. |
| Why are gems valuable? a. They are hard. b. They are minerals. c. They are rare. d. They are crystals. | They are rare., Gems are rare versions of minerals that are attractive. |
| Amethyst is a variation of which mineral? a. diamond b. garnet c. topaz d. quartz | quartz, Amethyst is a purple-colored gem, which is a variant of quartz. |
| All of the following are some other property used to identify minerals except __________. a. the ability for the mineral to create a double image b. magnetism c. boiling point d. reaction to hydrochloric acid | boiling point, The boiling point is not used to identify minerals. |
| Some gems have __________. a. fracture b. no color c. a crystalline structure d. a low Mohs number | a crystalline structure, Many gems are crystals that can be cut to look beautiful. |
| Salt from evaporated seawater has been formed from __________. a. artificial means b. volcanoes c. solution d. magma | solution, The salt, NaCl, in the seawater is left behind to form a rock when the solution evaporates. |
| A mineral that is hard __________. a. can be scratched with your fingernail b. will not break c. is hard to scratch d. will not shatter | is hard to scratch, Hard minerals will not scratch easily but can easily break or shatter. |
| Streak measures the color of a mineral's __________. a. crystals b. powder c. surface d. atoms | powder, When a streak is made, it leaves a line of colored powder. |
| The hardest mineral, with a 10 on the Mohs scale, is __________. a. iron b. quartz c. diamond d. talc | diamond, Diamond is the hardest mineral around. |
| An inorganic crystalline solid is formed in a lab. Why is it not a mineral? a. It is inorganic. b. It is a solid. c. It is a crystal. d. It is not naturally occurring. | It is not naturally occurring. Minerals are classified as such only when they occur naturally. |
| Whether a mineral has cleavage or fracture is determined by the __________. a. hardness of the mineral b. specific gravity c. arrangement of its atoms d. shape of its surface | arrangement of its atoms, Cleavage is determined by the arrangement of the mineral's atoms. |
| The specific gravity of a mineral compares its weight with an equal volume of __________. a. water b. diamond c. rock d. air | water, Water is used as a standard for specific gravity. |
| Hardness:7 (cannot be scratched by anything) Streak: none (scratches the streak plate) Color: varies.)Easily confused with: Fluorite (softer, has cleavage), olivine (heavier, usually green) | Quartz |
| Hardness: 6 (can scratch glass, not scratch streak plate)Clarity: opaque Color: pearly white to light grayish Cleavage: 2 directions at 90*. Easily confused with: Quartz (milky quartz is also white-gray, but is more cloudy/translucent) | Potassium Feldspar |
| Hardness: 6 (can scratch glass, cannot scratch streak plate) Clarity: always opaque Color: pearly white to light grayish Cleavage: 2 directions at 90*. Easily confused with: Quartz(milky quartz is also white-gray, but more cloudy/translucent | Plagioclase Feldspar |
| Effervescence: reacts with acid Hardness: 3 cannot be scratched by nail, can be scratched by a penny) Color: usually colorless, but occasionally impure with other colors Clarity: usually clear, but often cloudy or has surfaces damaged by scratches/acid. | Calcite |
| Hardness: 4 (cannot be scratched by fingernail or penny, can be scratched by a steel knife) Cleavage: 4 directions, but your sample may be bad Clarity: naturally translucent, but often has cracks or impurities under the surface | Fluorite |
| Hardness: 7 (cannot be scratched by anything)Streak: none (scratches the streak plate)Gravity: very dense, so it’s heavy for its size Color: moss-green to yellow-green, Easily confused with: Quartz (rarely green, and much lighter the hand) | Olivine |
| Color: black to dark green Clarity: always opaque Cleavage: 90 degrees, usually looks more “blocky” or “squarish” than hornblende Easily confused with hornblende but pay attention to cleavage | Augite |
| Color: black to dark green Clarity: always opaque Cleavage: broken surfaces may seem more “jagged” than Augite or have “stair-steps” Easily confused with: Augite, different cleavage | Hornblende |
| Color: greenish yellow Cleavage: 1 direction - so it comes off in stacked sheets Clarity: translucent in a stack, clear if looking through a single sheet Luster: non-metallic, but still shiny Easily confused with: Biotite (much, much darker color) | Muscovite |
| Color: black, dark brown Cleavage: 1 direction -comes off in flexible sheets Clarity: translucent, but difficult to see through because it’s so dark Luster: non-metallic, but still shiny Easily confused with: Muscovite (much lighter color) | Biotite |
| Hardness: 1 1 of 2 minerals that can be scratched by nail) Touch: soapy feeling Clarity: opaque, but can be translucent Color: cream or ivory color Easily confused with: Gypsum (can also be scratched with nail, but can be crystalline) | Talc |
| Cleavage:3 directions, cubic,rectangular brick Hardness: 2.5 (cant be scratched by nail) Color: colorless, unless impure Clarity: clear or cloudy. Confused with: Calcite effervescent, rhomboid, gypsum (scratched by nail), fluorite (cannot be scratched by | Halite |
| Hardness: 2 (one of two minerals that can be scratched by a fingernail) Texture: if your sample is clear, look for a fibrous texture all running in a single direction Easily confused with Talc | Gypsum |
| Color: pale gold (almost silver) up to full, rich gold Luster: metallic Streak: dark, almost black, and smells like sulfur (similar to matches) Clarity: always opaque | Pyrite |
| Luster: metallic Color: gray You can write your name with it on a sheet of paper Touch: feels silky smooth; glides across the skin | Graphite |
| Magnetic: will easily pick up a magnet if you move the magnetite in slowly from above Luster: metallic Color: very dark – usually black Streak: black Clarity: always opaque | Magnetite |
| V1 Color: dark grayish-blue Luster: metallic, shimmers when rotated V2 Streak: red-brown rust-colored Color: red-brown rust-colored Luster: dull V3 Streak: red-brown (rust-colored), maybe darker than v2 Color: dark red-brown, little bits of rust-red | Hematite |
| Based on its abundance in the earth's crust, most rocks will contain a mineral composed of oxygen and the element A) sulfur. B) carbon. C) silicon. D) iron. | silicon |
| The most useful clue to the identity of a mineral is its A) color. B) hardness. C) streak. D) crystal structure. | crystal structure |
| The most common rock in the earth's crust is A) igneous. B) sedimentary. C) metamorphic. D) None of the above. | igneous |
| An intrusive igneous rock will have which type of texture? A) fine-grained B) coarse-grained C) neither fine- nor coarse-grained | coarse-grained |
| Which of the following igneous rocks would have the greatest density? A) fine-grained granite (rhyolite) B) coarse-grained granite C) one composed of nonferromagnesian silicates D) basalt | basalt |
| Which of the following formed from previously existing rocks? A) sedimentary rocks B) igneous rocks C) metamorphic rocks D) All of the above are correct. | All of the above are correct |
| Rocks making up the ocean basins and much of the earth's interior have the same chemical composition as A) granite. B) basalt. C) halite. D) water. | basalt |
| Sedimentary rocks are formed by the processes of compaction and A) pressurization. B) melting. C) cementation. D) heating, but not melting. | cementation |
| A rock might be a metamorphic rock if it has A) large crystals that can be seen with the unaided eye. B) strata. C) a composition consisting of more than two minerals. D) foliation. | foliation |
| Which of the following has undergone the greatest extent of metamorphic changes? A) gneiss B) schist C) slate | schist |
| Which type of rock probably existed first, starting the rock cycle? A) metamorphic B) igneous C) sedimentary D) All of the above are correct. | igneous |
| Which is an example of matter? A) lightning B) electricity C) heat D) wood | Feedback: Wood is an example of matter. |
| Which of the following is the smallest particle that makes up all matter? A) atoms B) molecules C) cells D) isotopes | Feedback: Atoms are the smallest unit of an element. |
| An element is a substance that contains __________. A) only one type of atom B) many types of atoms C) different molecules D) only one type of molecule | Feedback: Only one type of atom makes up any given element. |
| How do scientists study atoms? A) microscopes B) telescopes C) models D) magnifying glasses | Feedback: Models are used to show how atoms behave. |
| Protons and neutrons are found in the __________. A) nucleus B) electron cloud C) orbitals D) bonds | Feedback: Protons and neutrons are packed tightly together in the nucleus of an atom. |
| Electrons carry __________. A) a positive charge B) a neutral charge C) a negative charge D) no charge at all | Feedback: Electrons carry negative charges. |
| The atomic number of an atom is the number of __________. A) neutrons B) electrons C) protons and neutrons D) protons | Feedback: The number of protons determines the atomic number. |
| Helium has two protons and two neutrons. What is its mass number? A) 2 B) 0 C) 4 D) 22 | Feedback: Helium has a mass number of 4, which includes two protons plus two neutrons. |
| Two isotopes of carbon, carbon-12 and carbon-14, have different numbers of __________. A) protons B) neutrons C) electrons D) isotopes | Feedback: Carbon-12 has six protons and six neutrons. Carbon-14 has six protons and eight neutrons. |
| An example of a compound is __________. A) O2 B) N2 C) CO2 D) He | Feedback: Carbon dioxide is a compound of carbon and oxygen. |
| Electrons that are shared are called ___________. A) ionic B) bonding C) strewn D) valence | Feedback: In a covalent bond, valence electrons are shared between atoms. |
| When an ionic bond is formed, electrons are __________ another atom. A) given to B) given to or taken from C) taken from D) destroyed in | Feedback: Ionic bonds form when electrons are gained and lost between two atoms. |
| Describe the electrons in a bar of gold. A) orbiting their nuclei B) being shared in covalent bonds C) found in the nucleus D) moving freely through the metal | Feedback: In a metal, the electrons move freely through the material in a sea of electrons. |
| Water and alcohol contain hydrogen bonds; therefore, they have __________ molecules. A) polar B) nonpolar C) metallic D) ionic | Feedback: Water contains some of the strongest hydrogen bonds, which produce polar molecules. |
| Mud is a(n) __________ because it contains two or more substances mixed together. A) compound B) solution C) element D) mixture | Feedback: Mud is a mixture but not a solution because the particles can settle. |
| Which is easiest to separate? A) solution B) compound C) mixture D) element | Feedback: A mixture is easiest to separate because the mixture does not occur on an atomic level. |
| What happens chemically when an apple browns? A) Oxygen interacts with the apple. B) Nitrogen interacts with the apple. C) Carbon dioxide interacts with the apple. D) The apple loses protons. | Feedback: Oxygen is highly reactive and causes apples and other fruits to brown. |
| An example of a chemical property is __________. A) color B) flammability C) melting point D) hardness | Feedback: To test flammability, you must try to burn something, thus changing its chemistry. |
| An example of a physical property is __________. A) density B) flammability C) combustibility D) ability to rust | Feedback: Density is a physical property because it can be observed without changing the substance's properties. |
| Mass divided by volume describes __________. A) melting point B) state of matter C) how well mixed a substance is D) density | Feedback: Density is calculated by determining mass and dividing it by the volume. |
| Which state of matter do you not observe readily in your daily life? A) plasma B) solid C) liquid D) gas | Feedback: You see solids, liquids, and gases every day, but plasma is relatively rare in your daily life. |
| In which of the following states of matter are the atoms and molecules farthest apart? A) liquid B) solid C) solution D) gas | Feedback: Gas particles move the fastest and are the farthest from each other. |
| Which state of matter, found in stars, is most common? A) plasma B) solid C) liquid D) gas | Feedback: Even though it is rare to see in your daily life, plasma is the most common state of matter in the universe because it makes up most stars. |
| What type of property is a change of state? A) chemical B) solution C) bonding D) physical | Feedback: A change of state is an example of a physical property. |
| What type of energy is used to change states of matter? A) electrical B) thermal C) magnetic D) gravitational | Feedback: Thermal energy is added to or taken away from any change of state. |
| A rock is a (an) __________. A) compound B) element C) mixture D) atom | Feedback: A rock is a mixture of different common minerals as well as volcanic glass and organic matter. |
| The rock cycle suggests that __________. A) rocks are always being added to Earth's mass B) rocks are continually recycled into different forms C) rocks disappear from Earth as they go underground D) rocks always stay in the same form | Feedback: The rock cycle suggests that rocks are continually recycled into different forms. |
| What does the term rock removal mean? A)Rock carried away by the wind or water is lost from Earth forever. C)Rock may be carried away by the wind or water, but it is never lost. | Feedback: Rock removal means that rock may be carried away by the wind or water& |