Soil Formation MCQ's Q & A PDF

What is the process by which rocks are broken down chemically? A. Formation of sedimentary rocks B. Weathering C. Formation of igneous rocks D. Formation of metamorphic rocks ANSWER: B What type of soil is found in bogs? A. Silty soil B. Peat C. Sandy soil D. Clay soil ANSWER: B What is...

What is the process by which rocks are broken down chemically? A. Formation of sedimentary rocks B. Weathering C. Formation of igneous rocks D. Formation of metamorphic rocks ANSWER: B What type of soil is found in bogs? A. Silty soil B. Peat C. Sandy soil D. Clay soil ANSWER: B What is the parent material of peat? A. Fully decomposed animals B. Remains of dead plants and animals C. Dead animals D. Decomposed plants ANSWER: B Why are the remains of dead plants and animals in peat not fully decomposed? A. Because of high humidity B. Because of lack of oxygen C. Because of high temperature D. Because of high pressure ANSWER: B What is an example of a metamorphic rock? A. Sandstone B. Quartzite C. Granite D. Basalt ANSWER: B What type of rock undergoes chemical weathering? A. Igneous rock B. Sedimentary rock C. Metamorphic rock D. All of the above ANSWER: D What is the result of freeze-thaw action on rocks? A. Chemical weathering B. Formation of soil C. Physical weathering D. Formation of metamorphic rocks ANSWER: C What is formed when sedimentary rock is subjected to high pressure and temperature? A. Metamorphic rock B. Sedimentary rock C. Igneous rock D. Soil ANSWER: A What is the primary component of soil? A. Weathered rock B. Magma C. Glacial drift D. Mineral crystals ANSWER: A Why are Irish soils considered young? A. They were formed after the last ice age B. They are composed of granite C. They are highly weathered D. They were formed from sedimentary rocks ANSWER: A What type of rocks are formed when magma cools slowly beneath the Earth\'s surface? A. Shale B. Granite C. Basalt D. Sandstone ANSWER: B What process is responsible for the alteration of the Earth\'s surface by a glacier? A. Weathering B. Erosion C. Glaciation D. Deposition ANSWER: C What is the primary factor that determines the size of mineral crystals in rocks? A. Cooling rate B. Chemical composition C. Pressure D. Temperature ANSWER: A Which of the following rocks is NOT a sedimentary rock? A. Limestone B. Granite C. Sandstone D. Shale ANSWER: B What is the primary importance of soil in agriculture? A. Soil regulates the Earth\'s climate B. Soil provides a habitat for microorganisms C. Soil acts as a filter for water D. Soil is a source of nutrients for plants ANSWER: D What type of rocks are formed from the cooling of magma on the Earth\'s surface? A. Granite B. Shale C. Basalt D. Sandstone ANSWER: C What is the primary purpose of determining soil texture? A. To evaluate the soil\'s mineral content B. To understand the soil\'s pH levels C. To measure the soil\'s water retention capacity D. To assess the nutrient holding capacity of the soil ANSWER: B Which of the following is a characteristic of young soil? A. Low levels of parent material B. Majority of parent material no longer available for soil formation C. High levels of parent material available for soil formation D. High levels of organic matter ANSWER: C What can be inferred about the topography of an area with high soil erosion? A. The area has a steep slope B. The area is heavily forested C. The area is flat and even D. The area has a gentle slope ANSWER: A What is the main difference between forests and grasslands in terms of soil formation? A. Grasslands have higher nutrient holding capacity than forests B. Forests have higher nutrient holding capacity than grasslands C. Forests have lower soil pH levels than grasslands D. Grasslands have lower soil pH levels than forests ANSWER: B What determines the mineral content of the soil? A. pH levels B. Soil texture C. Nutrient holding capacity D. Parent material ANSWER: D What is the primary source of fertility in old soil? A. Organic matter B. Soil texture C. Parent material D. Rock minerals ANSWER: A What is a key factor in determining soil drainage? A. pH levels B. Nutrient holding capacity C. Mineral content D. Soil texture ANSWER: D What can be inferred about an area with low levels of parent material available for soil formation? A. The area is likely to be heavily forested B. The area is likely to have old soil C. The area is likely to be a grassland D. The area is likely to have young soil ANSWER: B