ROCK TYPES
I form when magma or lava cools and hardens. I often have visible crystals. What am I?
What is igneous rock?
This is the breakdown of rock into smaller pieces by wind, water, ice, or chemical action. What is it?
What is weathering?
This rock has no layers and no visible crystals. It looks like black glass. What is it?
What is obsidian?
Any rock can become this when exposed to extreme heat deep in the Earth. What is it?
What is magma?
True or False: Weathering and erosion are the same process.
What is False? (Weathering breaks rocks; erosion moves them)
I'm made from weathered pieces of other rocks that have been compacted and cemented together. I often have layers. What am I?
What is sedimentary rock?
This process moves weathered rock pieces from one place to another. What is it?
What is erosion?
This rock is lightweight, has many visible holes from trapped gas, and can float on water. What is it?
What is pumice?
This is what magma becomes when it erupts onto Earth's surface. What is it?
What is lava?
How many main types of rocks are there?
What is three? (Igneous, sedimentary, metamorphic)
I form when existing rocks are exposed to extreme heat and pressure deep in the Earth, but I don't melt. What am I?
What is metamorphic rock?
When sediments are dropped and settle in layers by wind or water, this process occurs. What is it?
What is deposition?
This rock is mostly white with colored streaks. It's often used in sculptures and buildings. What is it?
What is marble?
For a metamorphic rock to become an igneous rock, it must go through this process first. What is it?
What is melting?
In the Starburst Lab, when you chopped the candy with a knife, what rock cycle process were you modeling?
What is weathering?
I'm a type of igneous rock that cooled slowly underground, so I have large, visible crystals. I'm often white with streaks of color. What am I?
What is granite?
Layers of sediment press down on each other, removing air spaces and squeezing them together. What is this process called?
What is compaction?
This rock has visible layers and feels gritty. You can scrape sand off it with your fingernail. What is it?
What is sandstone?
This is why the Rock Cycle is called a "cycle" and not a "line." What is the reason?
What is because rocks continuously transform and recycle, with no beginning or end? (or similar)
This type of igneous rock has large, visible crystals because it cooled slowly. This type has small or no crystals because it cooled quickly. What are they?
What is intrusive and extrusive? (or granite and basalt)
I'm an igneous rock that looks like black glass with no visible crystals. I cooled so quickly that crystals didn't have time to form. What am I?
What is obsidian?
Minerals like silica glue sediment pieces together to form solid rock. What is this process called?
What is cementation?
This rock has colorful bands and wavy stripes running through it. It's metamorphic. What is it?
What is gneiss (pronounced "nice")?
Trace this path: Sedimentary Rock → Weathering → Sediment → Compaction/Cementation → ? What type of rock do you get?
What is sedimentary rock? (It's a shortcut/loop in the cycle)
A rock has visible layers but NO fossils. According to the identification key, what type of rock is it most likely?
What is metamorphic rock? (Layers suggest sedimentary origin, but no fossils suggests metamorphic change)