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3-Rocks and Minerals
3rd Grade Rocks and Minerals- CCGPS Study Stack
| Quesiton | Answer |
|---|---|
| _______ is a solid object that is formed in nature and has never been alive. | Mineral |
| What are the properties used to identify minerals? | Color, Luster, Streak Color, Texture, Hardness |
| 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. |
| What are rocks made of? | Minerals |
| What is the MOHS Hardness Scale? | A scale that measures the hardness of a mineral. |
| What is the hardest mineral? | Diamond |
| What is the softest mineral? | Talc |
| What test is used to determine the hardness of a mineral? | The Scratch Test |
| 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. |
| What are 3 types of rock? | Igneous, Metamorphic and Sedimentary |
| How are igneous rocks formed? | When melted rock (magma and lava) cools and hardens. |
| 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. |
| How are metamorphic rocks formed? | Formed deep inside the Earth's crest when heat and pressure changes a rock. |
| In which type of rock would you find a fossil? | Sedimentary |
| 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. |
| Why are rocks not on the MOHS Hardness Scale? | Rocks are made up of more than one mineral. |
| Soil with smallest grains and feels smooth? | Clay |
| Soil has many nutrients but packed so close together the roots can't push through it easily | Clay |
| Soil made from dead plants and animals and is dark blackish/ brown color | Humus |
| 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 |
| Soil good for growing things but should be mixed with other types of soil | Humus |
| Soil of tiny bits of rock- mostly quartz and has the largest grains | Sand |
| Soil that is loose and easy to dig in, feels rough and gritty | Sand |
| Soil that does not have many nutrients and does not hold water well | Sand |
| ________ is not good for growing because the plant roots can't grip it unless they have special adaptations | Sand |
| _______ is a mixture of soils - clay, silt, sand and humus. | Loam |
| _______ is a soil that is dark brown in color and holds water well and has many nutrients. | Loam |
| _______ is a soil that is lighter and looser than clay and most plans can grow well in it | Loam |
| _______ is a mixture of minerals, weathered rocks, and other bits of decayed plants and animals. | Clay |
| ______ is a very small particle size, holds water. | Soil |
| ______ is a very large particle size and does not hold water. | Sand |
| ______ is the best soil to use for plants. | Loam |
| _______ is created when an organism leaves its imprint behind in soft mud, either from its remains or by touching the ground. | Fossil |
| Where are fossils usually found? | Sedimentary Rocks |
| Hard parts of _____ and _____ are most likely to leave a fossil. | animals and plants (bones and stem) |
| _(#)_ 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 |
Created by:
mrs.khenson
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