Unit 3 Review 8th grade Science

Front

What is the process by which rocks are broken down into smaller pieces?

Back

Weathering is the process by which rocks are broken down into smaller pieces by natural forces such as wind, rain, and temperature changes.

Front

What type of rock is formed from cooled magma or lava?

Back

Igneous rock is formed from the cooling and solidification of magma or lava.

Front

What is sedimentary rock?

Back

Sedimentary rock is formed from the accumulation and compaction of mineral and organic particles.

Front

How does metamorphic rock form?

Back

Metamorphic rock forms when existing rock is subjected to heat and pressure, causing physical and chemical changes.

Front

What is the rock cycle?

Back

The rock cycle is the continuous process of rock formation and transformation, including the formation of igneous, sedimentary, and metamorphic rocks.

Front

What determines the type of rock formed?

Back

The type of rock formed is determined by how it is formed, including the processes of cooling, compaction, and metamorphism.

Front

What is the significance of fossils found in sedimentary rock?

Back

Fossils found in sedimentary rock indicate that the area was once a habitat for living organisms.

Front

What role do tectonic activities play in rock formation?

Back

Tectonic activities can lead to the formation of metamorphic rocks and the creation of sedimentary layers through processes like uplift and subsidence.

Front

What is the difference between intrusive and extrusive igneous rocks?

Back

Intrusive igneous rocks form from magma that cools slowly beneath the Earth's surface, while extrusive igneous rocks form from lava that cools quickly on the surface.

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from one location and transported to another, often by wind, water, or ice.