Rock Cycle and Types of Rocks

The video explains the rock cycle, starting with magma in a volcano, which cools to form igneous rock. This rock undergoes weathering and erosion, breaking down into sediment. The sediment is transported and deposited, forming sedimentary rock under pressure. With heat and pressure, sedimentary rock transforms into metamorphic rock. Eventually, metamorphic rock melts back into magma, completing the cycle. The video covers the formation and transformation of igneous, sedimentary, and metamorphic rocks.

What is magma primarily composed of?

• Ice

• Melted rock

• Solid rock

• Water

What type of rock is formed when magma cools and solidifies?

• Limestone

• Sedimentary rock

• Metamorphic rock

• Igneous rock

What is the process called when rocks are broken down by wind, rain, and ice?

• Compaction

• Weathering

• Erosion

• Sedimentation

How is sedimentary rock formed?

• By volcanic eruption

• By melting of metamorphic rock

• By cooling of magma

• By compaction and cementation of sediments

What is the main factor that causes sediment to be transported by rivers?

• Gravity

• Wind

• Water flow

• Earthquakes

What causes sedimentary rock to transform into metamorphic rock?

• Weathering

• Cooling

• Erosion

• Heat and pressure

What happens to metamorphic rock when it melts?

• It forms igneous rock

• It turns into magma

• It becomes sedimentary rock

• It remains unchanged

Which of the following is NOT a part of the rock cycle?

• Weathering

• Photosynthesis

• Sedimentation

• Erosion

What is the term for the series of changes that rocks undergo over time?

• Water cycle

• Carbon cycle

• Rock cycle

• Nitrogen cycle

Which type of rock is formed under extreme heat and pressure?

• Basalt

• Metamorphic rock

• Sedimentary rock

• Igneous rock