The Earth's structure - SS1 Geography Past Questions and Answers - page 2
What is the primary color of sedimentary rocks like sandstone?
Red
Blue
Gray
Green
Which rock type is formed through the accumulation and compaction of sediments?
Igneous
Metamorphic
Sedimentary
Volcanic
What causes the formation of non-foliated metamorphic rocks?
High pressure and temperature
Rapid cooling
Accumulation of sediments
Organic material
Which layer of the Earth's core generates the planet's magnetic field?
Inner core
Mantle
Outer core
Crust
Which sphere of the Earth includes rocks, minerals, and geological processes?
Atmosphere
Hydrosphere
Geosphere
Biosphere
Describe the characteristics of an intrusive (plutonic) igneous rock.
An intrusive igneous rock forms beneath the Earth's surface and cools slowly, resulting in larger, visible crystals.
Provide an example of a sedimentary rock and describe its texture.
An example of a sedimentary rock is sandstone, which typically has a clastic texture with visible grains of sand cemented together.
Explain the primary difference between foliated and non-foliated metamorphic rocks.
Foliated metamorphic rocks have a layered or banded appearance with aligned minerals, while non-foliated rocks have a more uniform, granular texture.
How does the Earth's atmosphere protect the planet from harmful solar radiation?
The Earth's atmosphere absorbs harmful solar radiation, preventing it from reaching the surface, thus protecting life on Earth.
Discuss the role of the Earth's core, specifically the outer core, in generating the planet's magnetic field.
The movement of molten iron and nickel in the outer core generates the Earth's magnetic field, which shields the planet from harmful solar radiation and influences compasses.