Rocks and Soil Quiz - ICSE Class 6 Chemistry
Free practice quiz: Rocks and Soil (ICSE Class 6 Chemistry). 47 multiple-choice questions with answers and explanations. Play online, no sign-up needed.
This ICSE Class 6 Chemistry practice quiz has 47 multiple-choice questions on Rocks and Soil, and 47 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.
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Which type of rock is formed from the cooling and solidification of molten rock (magma or lava)?
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Answer: C. Igneous rock
Igneous rocks are formed when molten rock cools and solidifies. This molten rock can be magma (below the Earth's surface) or lava (on the Earth's surface).
The different horizontal layers of soil, characterized by distinct physical and chemical properties, are called:
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Answer: C. Soil horizons
Soil horizons are distinct layers that form in a soil profile as a result of soil-forming processes. These layers are typically labeled O, A, E, B, C, and R.
Slate is a metamorphic rock formed from which parent rock?
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Answer: B. Shale
Slate is a low-grade metamorphic rock formed from shale, a fine-grained sedimentary rock, under relatively low temperatures and pressures.
What is the primary weathering process that causes iron-rich minerals in rocks to rust?
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Answer: C. Oxidation
Oxidation is a chemical weathering process where minerals react with oxygen, often in the presence of water. This is responsible for the rusting of iron-bearing minerals, turning them reddish-brown.
A rock that has been changed in form by intense heat and pressure without melting is:
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Answer: C. Metamorphic
Metamorphic rocks are formed when existing rocks are transformed by heat, pressure, or chemical reactions, altering their mineral composition and texture.
More questions in this quiz
Answers and explanations are in the full quiz.
- Sedimentary rocks are typically formed by the accumulation and cementation of what?
- Metamorphic rocks are formed when existing rocks are transformed by which processes?
- Which of the following is an example of an igneous rock?
- What is the primary process that breaks down rocks into smaller pieces, a crucial first step in soil formation?
- The gradual wearing away and transportation of weathered rock material by agents like wind, water, and ice is called:
- Which of the following is a characteristic of soil?
- The 'parent material' for soil is:
- Which component of soil is derived from the decomposition of dead plants and animals?
- Which soil horizon is typically the top layer, rich in humus and organic matter?
- The B horizon, or subsoil, is generally characterized by the accumulation of which materials washed down from the A horizon?
- Which type of weathering involves the direct physical breakdown of rocks without changing their chemical composition?
- The process where water seeps into cracks in rocks, freezes, expands, and widens the cracks is called:
- Which chemical weathering process involves the reaction of minerals with water?
- The process of rocks dissolving in acidic water is an example of:
- Which of the following is an example of a sedimentary rock that forms from the accumulation of organic material?
- Marble is a metamorphic rock formed from which parent rock?
- The process by which sediments are bound together to form solid rock is called:
- Which rock type is characterized by the presence of fossils?
- What is the most abundant mineral in the Earth's crust, a common component of igneous rocks like granite?
- Which mineral is known for its hardness (7 on the Mohs scale) and is often found in both igneous and metamorphic rocks, as well as in sand?
- The C horizon of a soil profile consists mainly of:
- Which term describes the process of soil particles being carried away by wind or water?
- Which of these is a common intrusive igneous rock?
- Which of these is a common extrusive igneous rock?
- The process of 'lithification' refers to:
- Which soil particle size is the smallest?
- A soil with a good balance of sand, silt, and clay particles, often considered ideal for agriculture, is called:
- Which of the following is a characteristic of clay soil?
- Sandy soils are characterized by:
- The R horizon, the deepest layer in a soil profile, is:
- Which factor of soil formation refers to the climate conditions of an area, including temperature and precipitation?
- The slope and orientation of the land surface, which influences drainage and erosion, is known as:
- Which rock type is formed from fragments of other rocks cemented together?
- The 'rock cycle' describes:
- The biological weathering of rocks can occur through:
- Which of the following is NOT a factor in soil formation?
- The gradual process of rock breakdown and soil development can take:
- Which type of rock is formed from the accumulation and lithification of sediments derived from the breakdown of pre-existing rocks?
- Which of these is a well-known metamorphic rock known for its ability to split into thin, flat sheets?
- What is the term for the process where minerals are dissolved by acidic water, often leading to the formation of caves in limestone?
- The formation of soil from the weathering of rocks and the accumulation of organic matter is a process that involves multiple distinct layers, known as:
- Which of the following best describes the A horizon (topsoil)?