Review Rocks-8

This is called Pumice. It is formed when magma reaches the surface, and reduced pressure lets gas bubbles escape. When it cools, it has so many trapped air bubbles that it will actually float in water. What kind of rock is it?.

  1. Igneous

    Yes! Igneous rocks formed from magma or lava. This is an igneous rock.
  2. Sedimentary

    No. Sedimentary rocks are deposited by wind, water, ice, or gravity, and they often contain fossils. This is not a sedimentary rock.
  3. Metamorphic

    No. Metamorphic rocks have been changed by heat and pressure from a different kind of rock. Instead of being changed, this got hot enough to completely melt, so it is not metamorphic.
  4. Pumice is not a rock.

    No. Pumice is a naturally occurring solid that forms large layers in the Earth. Pumice is a rock.



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).
Evaporites video, learnalong
Igneous Rocks and Bubbles video, learnalong
Sedimentary Rocks video, learnalong
What is a Rock? video, learnalong
Bioclastics: Rocks With No Minerals video
Homemade Fossil Dig text page
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
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
Review Rocks-1 practice
Review Rocks-2 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).
Evaporites video, learnalong
What is a Rock? video, learnalong
The Rock Cycle video, learnalong
Change: Fast and Slow video
Erosion video
Continuous Change video
Bioclastics: Rocks With No Minerals video
Weathering and Erosion video, learnalong
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-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 Erosion-6 practice

Utah


UT.4.III.1.a Describe the differences between minerals and rocks.
What is a Mineral? video, free
Identifying Minerals video, learnalong
What is a Rock? video, learnalong
Bioclastics: Rocks With No Minerals video
Definition of a Mineral video, free
Review Rocks-1 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

NGSS


4-ESS1-1 Identify evidence from patterns in rock formations and fossils in rock layers to support an explanation for changes in a landscape over time.

MS-ESS2-1 Develop a model to describe the cycling of Earth’s materials and the flow of energy that drives this process.
Definition of a Mineral video, free
Evaporites video, learnalong
Igneous Rocks and Bubbles video, learnalong
What is a Mineral? video, free
Identifying Minerals video, learnalong
Sedimentary Rocks video, learnalong
What is a Rock? video, learnalong
The Rock Cycle video, learnalong
Bioclastics: Rocks With No Minerals video
Light and Dark Minerals text page, learnalong
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
Review Rocks-1 practice