3rd Grade Rocks and Minerals- CCGPS Study Stack
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| _______ is a solid object that is formed in nature and has never been alive. | Mineral
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| What are the properties used to identify minerals? | Color, Luster, Streak Color, Texture, Hardness
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| Why is size not a property to identify materials? | You can have a large or small sample of the mineral and a large piece can be broken into a smaller piece.
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| What are rocks made of? | Minerals
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| What is the MOHS Hardness Scale? | A scale that measures the hardness of a mineral.
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| What is the hardest mineral? | Diamond
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| What is the softest mineral? | Talc
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| What test is used to determine the hardness of a mineral? | The Scratch Test
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| What does weathering and erosion have to do with rocks forming? | Weathering is the way rocks are broken down into smaller pieces and erosion is the movement of weathered rock.
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| What are 3 types of rock? | Igneous, Metamorphic and Sedimentary
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| How are igneous rocks formed? | When melted rock (magma and lava) cools and hardens.
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| How are sedimentary rocks formed? | When minerals are broken by wind and water the bits of pieces are carried away and settled in layers after a long time the layers harden.
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| How are metamorphic rocks formed? | Formed deep inside the Earth's crest when heat and pressure changes a rock.
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| In which type of rock would you find a fossil? | Sedimentary
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| What does the rock cycle show us? | The rock cycle is an endless process in which rocks are changed from one type to another- rocks are always changing.
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| Why are rocks not on the MOHS Hardness Scale? | Rocks are made up of more than one mineral.
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| Soil with smallest grains and feels smooth? | Clay
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| Soil has many nutrients but packed so close together the roots can't push through it easily | Clay
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| Soil made from dead plants and animals and is dark blackish/ brown color | Humus
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| Soil that adds a lot of nutrients to the soil and is very rich and it soaks up water to keep the soil moist | Humus
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| Soil good for growing things but should be mixed with other types of soil | Humus
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| Soil of tiny bits of rock- mostly quartz and has the largest grains | Sand
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| Soil that is loose and easy to dig in, feels rough and gritty | Sand
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| Soil that does not have many nutrients and does not hold water well | Sand
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| ________ is not good for growing because the plant roots can't grip it unless they have special adaptations | Sand
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| _______ is a mixture of soils - clay, silt, sand and humus. | Loam
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| _______ is a soil that is dark brown in color and holds water well and has many nutrients. | Loam
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| _______ is a soil that is lighter and looser than clay and most plans can grow well in it | Loam
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| _______ is a mixture of minerals, weathered rocks, and other bits of decayed plants and animals. | Clay
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| ______ is a very small particle size, holds water. | Soil
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| ______ is a very large particle size and does not hold water. | Sand
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| ______ is the best soil to use for plants. | Loam
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| _______ is created when an organism leaves its imprint behind in soft mud, either from its remains or by touching the ground. | Fossil
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| Where are fossils usually found? | Sedimentary Rocks
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| Hard parts of _____ and _____ are most likely to leave a fossil. | animals and plants (bones and stem)
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| _(#)_ is the rating for the softest mineral and _(#)_ is the rating for the hardest mineral | _1_ is the rating for the softest mineral and _10_ is the rating for the hardest mineral
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