Unit C Vocabulary. Howard Middle School Earth Science 6 th grade. Inference – To conclude by reasoning from evidence. Landform – A feature of the earth’s surface such as a lake, stream, valley, canyon, hill, ridge, or mountain. Marsh – An area of low-lying wet land; swamp or bog.
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13. Mean – The central value of a numerical data set calculated by adding up all the data points in the data set and dividing this sum by the total number of data points in the data set.
15.Mode – The most frequently occurring data point of a numerical data set.
16.Sample size – The number of data points in a data set.
18.River Channel – The depression in the land through which a river flows.
19.Earth Processes – Dynamic actions that occur both on earth’s surface and inside the earth.
21.Deposit – Earth materials that have been left in a particular location as a result of an earth process that drops sediments that were previously suspended in air, water, or ice.
23.Destructive – A force or earth process that breaks down or removes earth material.
24.Erode – To remove earth materials from one place and transport them elsewhere, commonly by moving water or wind.
26.Floodplain – The relatively level area on either side of a river that becomes covered with water when the water level in the river rises above its banks and overflows.
28.Ecologist – Scientist who studies the interactions between organisms and their environment.
29.Engineer – A professional who uses science to solve practical problems, make equipment, and build structures.
30.Geologist – Scientist who studies the earth and the changes that take place on and beneath its surface.
32.Tested Variable – A variable that is changed in a systematic way in an experiment in order to determine its effect.
33.Uncontrolled Variable – A variable in an experiment or investigation that the experimenter either ignores or is unable to hold constant.
35.Breakwater – A rock structure parallel to the shore that is used to slow erosion by reducing wave energy hitting the shore.
36.Disadvantage – A property that, in your opinion, is not good.
38.Jetty – A rock structure built perpendicular to the shore that prevents deposition in a particular area, such as a harbor.
39.Longshore Current – A stream of water in the ocean that runs parallel to the shore.