BJU 6th Grade - Chapter 2
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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| Sedimentary | Rock formed when layers of sediment and organisms harden; one of three main categories of rocks
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| Igneous | Rock formed as magma and lava harden
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| Metamorphic | Rock formed deep below the earth's crust by heat and pressure
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| Rock cycle | The changing and transforming of the rock as it undergoes weathering, heat and pressure
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| Weathering | The process of breaking down rocks
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| Mechanical weathering | The process of breaking down rock into smaller and smaller pieces
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| Chemical weathering | The process of decomposing rocks into new substances
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| Uniformitarianism | People who believe that studying the present processes in nature explain the past
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| Carbonic acid | A weak acid formed from water and carbon dioxide
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| Speleothem | Various formations in caverns that form as dissolved calcite is deposited out of the water
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| Stalagmite | A cave formation that builds on the floor of a cave; made from the drippings of dissolved calcite
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| Stalactite | A cave formation that hangs from the ceiling of a cave; made from the dripping of dissolved calcite
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| Soil | The loose material at the surface of the earth
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| Humus | Decayed organic material found in soil
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| Pedologist | A scientist who studies soil
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| Sand | The largest particle of soil; It does not retain water in the soil
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| Clay | The smallest particle of soil; holds nutrients and water but does not have room for air
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| Silt | A tiny particle of soil that allows water and air to mix in the soil
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| Texture | The amount of each kind of particle in a soil sample
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| Loam | Soil that has properties of all three soil particles-sand, silt, and clay
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| Horizon | The multiple layers of soil
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| Topsoil | The layer of soil in which most plants germinate and where roots grow
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| Subsoil | The layer of soil that contains nutrients from the humus that have washed down through the upper layers and weathered minerals from the parent rock below
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| Bedrock | The layer underneath the soil that consists of unweathered rock; also called regolith
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| Sediment | Small particles produced by the weathering of rocks
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| Erosion | The action of weathered material moving from one location to another
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| Agents of erosion | A vehicle, such as gravity, water, wind, or ice, that causes erosion
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| Deposition | The dropping of sediment and rocks in a new location by gravity, wind, water, or ice
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| Mass movement | Erosion that occurs where gravity is the primary factor
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| Load | The sediment that a stream carries
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| Delta | The area at the mouth of a river where sediment is deposited
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| Birdfoot delta | The name of an unusual-shaped delta that sprawls in all directions
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| Deflation | The action of the wind blowing and picking up loose sediment and carrying it away
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| Dust storm | A storm caused by wind blowing small, loose particles high into the air
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| Sandstorm | A storm caused by wind blowing sand particles along the ground
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| Glacier | Ice formation formed where layers of unmelted snow compact into ice
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| Plucking | The action of a glacier pulling a huge piece of bedrock loose as the glacier slides down a mountain
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| Moraine | The pile of sediment deposited by a glacier as it melts and recedes
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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