Rock Cycle and Soil Formation

Soil is a complex mixture of _______________________.

• mineral fragments
• air and water
• eroded rock
• all of the above 

How are sedimentary rocks formed?

• They are formed from tiny pieces of rock that collect in ocean beds
• They are formed over many years of pressure and heat
• They form from cooled magma
• They are hot magma erupted from a volcano

If you are digging in an area and find igneous rocks, what can you conclude?

• A glacier passed through at one time
• The area was once an ocean
• A volcano was near by at one time
• The rocks were probably carried there by ancient people

These rocks form as a result of heat and pressure.

• igneous rocks
• sedimentary rocks
• metamorphic rocks
• lava rocks

After rocks melt, what do they become?

• marble
• magma
• lava
• sandstone

How do igneous rocks form?

• Metamorphic rocks melted, then cooled
• Metamorphic rocks are deposited and cemented
• Sedimentary rocks erode
• Sedimentary rocks are compacted 

Which statement best describes the processes of weathering and erosion?

• Weathering and erosion are directly responsible for the breakdown of any type of rock into smaller particles and the carrying away of the loose sediments.

• Weathering and erosion are directly responsible for depositing loose sediments on the bottom of the ocean, forming layers of sediment.

• Weathering and erosion are directly responsible for the amount of water in a river that transports sediments to the sea.

• Weathering and erosion are directly responsible for the transportation, deposition and compaction of loose sediments on the seafloor.

Cooling & crystalization produce

• igneous rocks
• metamorphic rocks
• sedimentary rocks

What are the 3 major types of rocks?

• Igneous, Metamorphic, Sedimentary
• Metamorphic, Igneous, Cementation
• magma, lava, crystals

Which type of rock is made by small bits of rock, mud, or sand compacted and cemented together?

• Coal
• igneous
• metamorphic
• sedimentary