The white lines in this piece of rock were straight when the formed. Later, the rock was squeezed by tremendous pressure that compressed the layers into squiggles. What kind of rock is it?.
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Igneous
No. Igneous rocks formed from magma or lava. The original rock was igneous, but it has been changed and is no long an igneous rock. -
Sedimentary
No. Sedimentary rocks are bits of other rocks that have been moved and deposited. This rock was squeezed, not moved and deposited. It is not sedimentary. -
Metamorphic
Yes! Rocks that are changed by pressure and/or heat are classified as metamorphic rocks. The wavy, white lines show us that the rock has been squeezed by tremendous pressure. That tells us it is a metamorphic rock. -
None of the above.
No. All rocks are classified as either igneous, sedimentary, or metamorphic.
Click to see which state standards this question tests, and which of my videos, experiments, and other resources support that topic.
Florida
SC.4.E.6.1 Identify the three categories of rocks: igneous, (formed from molten rock); sedimentary (pieces of other rocks and fossilized organisms); and metamorphic (formed from heat and pressure).
Sedimentary Rocks | video, learnalong |
What is a Rock? | video, learnalong, checked |
Bioclastics: Rocks With No Minerals | video |
Evaporites | video, learnalong, checked |
Igneous Rocks and Bubbles | video, free, learnalong, Updated |
Foliated and Unfoliated Rocks | text page, learnalong |
Identifying Igneous Rocks | text page, learnalong |
Intrusive and Extrusive Igneous Rocks | text page, learnalong |
Light and Dark Minerals | text page, learnalong |
Homemade Fossil Dig | text page |
Review Rocks-1 | practice |
Review Rocks-2 | practice |
Review Rocks-3 | practice |
Review Rocks-4 | practice |
Review Rocks-5 | practice |
Review Rocks-6 | practice |
Review Rocks-8 | practice |
Review Rocks-9 | practice |
Review Rocks-7 | practice |
Review Rocks-10 | practice |
Review Rocks-10 | practice |
Review Rocks-10 | practice |
SC.7.E.6.2 Identify the patterns within the rock cycle and relate them to surface events (weathering and erosion) and sub-surface events (plate tectonics and mountain building).
The Rock Cycle | video, learnalong |
Change: Fast and Slow | video |
Erosion | video, checked |
Continuous Change | video, checked |
Bioclastics: Rocks With No Minerals | video |
Weathering and Erosion | video, learnalong, checked |
Evaporites | video, learnalong, checked |
What is a Rock? | video, learnalong, checked |
Review Rocks-1 | practice |
Review Erosion-1 | practice |
Review Erosion-2 | practice |
Review Erosion-3 | practice |
Review Erosion-4 | practice |
Review Erosion-5 | practice |
Review Rocks-4 | practice |
Review Rocks-5 | practice |
Review Rocks-6 | practice |
Review Rocks-8 | practice |
Review Rocks-9 | practice |
Review Rocks-7 | practice |
Review Rocks-10 | practice |
Review Rocks-10 | practice |
Utah
UT.4.III.1.c Sort rocks by appearance according to the three basic types: sedimentary, igneous and metamorphic (e.g., sedimentary–rounded-appearing mineral and rock particles that are cemented together, often in layers; igneous–with or without observable crystals that are not in layers or with or without air holes or glasslike; metamorphic –crystals/minerals, often in layers).
Identifying Minerals | video, learnalong |
Sedimentary Rocks | video, learnalong |
What is a Rock? | video, learnalong, checked |
Definition of a Mineral | video, checked |
Igneous Rocks and Bubbles | video, free, learnalong, Updated |
What is a Mineral? | video, checked |
Review Rocks-10 | practice |
UT.4.III.1.d Classify common rocks found in Utah as sedimentary (i.e., sandstone, conglomerate, shale), igneous (i.e., basalt, granite, obsidian, pumice) and metamorphic (i.e., marble, gneiss, schist).
Sedimentary Rocks | video, learnalong |
What is a Rock? | video, learnalong, checked |
Evaporites | video, learnalong, checked |
Igneous Rocks and Bubbles | video, free, learnalong, Updated |
Light and Dark Minerals | text page, learnalong |
Review Rocks-2 | practice |
Review Rocks-3 | practice |
Review Rocks-10 | practice |
Review Rocks-10 | practice |
NGSS
MS-ESS2-1 Develop a model to describe the cycling of Earth’s materials and the flow of energy that drives this process.
What is a Mineral? | video, checked |
Identifying Minerals | video, learnalong |
Sedimentary Rocks | video, learnalong |
What is a Rock? | video, learnalong, checked |
The Rock Cycle | video, learnalong |
Bioclastics: Rocks With No Minerals | video |
Evaporites | video, learnalong, checked |
Definition of a Mineral | video, checked |
Igneous Rocks and Bubbles | video, free, learnalong, Updated |
Light and Dark Minerals | text page, learnalong |
Review Rocks-1 | practice |
Review Rocks-2 | practice |
Review Rocks-3 | practice |
Review Rocks-4 | practice |
Review Rocks-5 | practice |
Review Rocks-6 | practice |
Review Rocks-8 | practice |
Review Rocks-9 | practice |
Review Rocks-7 | practice |
Review Rocks-10 | practice |
Review Rocks-10 | practice |
Review Rocks-10 | practice |
MS-ESS2-1 Develop a model to describe the cycling of Earth’s materials and the flow of energy that drives this process.
What is a Mineral? | video, checked |
Identifying Minerals | video, learnalong |
Sedimentary Rocks | video, learnalong |
What is a Rock? | video, learnalong, checked |
The Rock Cycle | video, learnalong |
Bioclastics: Rocks With No Minerals | video |
Evaporites | video, learnalong, checked |
Definition of a Mineral | video, checked |
Igneous Rocks and Bubbles | video, free, learnalong, Updated |
Light and Dark Minerals | text page, learnalong |
Review Rocks-1 | practice |
Review Rocks-2 | practice |
Review Rocks-3 | practice |
Review Rocks-4 | practice |
Review Rocks-5 | practice |
Review Rocks-6 | practice |
Review Rocks-8 | practice |
Review Rocks-9 | practice |
Review Rocks-7 | practice |
Review Rocks-10 | practice |
Review Rocks-10 | practice |
Review Rocks-10 | practice |