Rocks and Minerals Review

What sized sediment makes shale?

• Sand
• Clay
• Cobble

Which is bigger?
Silt, Cobble, or Sand

• Silt
• Cobble
• Sand

How is sediment classified/grouped?

• By color
• By hardness
• By size

Sedimentary rocks are formed by

• Cooling of lava or magma
• Heat and pressure
• Compacting and cementing

How is sediment formed?

• Weathering and Erosion
• Melting
• Pressure

Which of the following is a metamorphic rock?

• obsidian
• granite
• gneiss
• sandstone

When metamorphic rocks are formed, the extreme pressure is usually caused by the _______.

• gravity in the atmosphere
• collision of tectonic plates
• the fiery hot magma in the Earth's mantle
• weight of the mountains

When metamorphic rocks are formed, the extreme heat is usually caused by the _______.

• gravity in the atmosphere
• collision of tectonic plates
• the fiery hot magma in the Earth's mantle
• weight of the mountains

Metamorphic rocks are formed by ___.

• existing rocks are baked and squeezed by pressure
• small pieces of rock are compacted and cemented together
• magma or lava cools and hardens
• igneous rocks are broken into pieces

Igneous rocks are formed by ___.

• existing rocks are baked and squeezed by pressure
• small pieces of rock are compacted and cemented together
• magma or lava cools and hardens
• igneous rocks are broken into pieces