Rocks and Minerals

Metamorphic rock is

• Rock that has been changed by heat, pressure, or both deep inside the Earth.

• matter that settles to the bottom of a liquid; dregs.

• the processes through which the three main rock types (igneous, metamorphic, and sedimentary) transform from one type into another.

What is a sedimentary rock?

• the formation, breakdown, and reformation of a rock as a result of sedimentary, igneous, and metamorphic processes.

• Rock with smaller bits of rock or shells (sediments) that have been compacted and cemented together.

• started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form.

• the ability to resist being scratched

What is an Igneous rock-

• Igneous rock is a rock that is formed from hot molten rock material that has cooled and hardened.

• A type of rock created by the erosion of other rocks.
• A rock that forms only under extreme pressure.
• A type of rock formed from sedimentary layers.

What is the rock cycle?

• The rock cycle is a method of cooking rocks.
• The rock cycle refers to the movement of rocks in space.
• The ongoing process of recycling of old rock into new

• The rock cycle is a type of musical genre.

What is a sediment?

• Formed from weathering and erosion by water, wind, ice, and gravity.

• Sediment is a gas that forms in the atmosphere.
• Sediment refers to the process of evaporation.
• Sediment is a type of liquid found in oceans.

What must happen before a rock cools and hardens into an Igneous rock?

• The rock must be exposed to air.
• The rock must first melt in magma or lava

• The rock must be underwater.
• The rock must be compressed by layers of soil.

Where do rocks change from heat and pressure?

• In the Earth's crust during erosion.
• In the atmosphere due to weathering.
• In the ocean floor from sedimentation.
• Rocks change into metamorphic rocks deep inside the Earth

Is there any type of rock that cannot become another type of rock?

• No, because there are arrows going from each rock type to the other rock types.

• No, because the rock cycle is an on-going process.

• Sedimentary rocks are permanent and cannot transform.
• Some rocks can only remain as igneous.