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Java Games: Flashcards, matching, concentration, and word search. |
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Chapter 9, Sections 2 and 3 Vocabulary Review -
4th grade review
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differential weathering,  | when one part of the landscape weathers more or faster than the rest |
surface area,  | the total area of an object |
parent rock,  | ck that breaks down into mineral fragments that form soil |
bedrock,  | the layer of rock beneath the soil |
soil texture,  | the amounts of sand, silt, and clay in a soil sample |
humus,  | organic material in soil |
soil horizons,  | layers of soil sorted by their composition |
pH scale,  | tells you how acid or alkaline soil is |
tropical climate,  | nutrient poor soil because frequent rains leach nutrients out of soil |
desert soil,  | the salty conditions in this type of soil make it difficult for some plants to grow |
temperate forest and grassland,  | these climates have excellent soil and allow many plants to grow |
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