[DOC] [TLE] The types of rock: igneous, metarmorphic and sedimentary [PAR] Jan 12, 2015 ... Sedimentary; they are formed through the solidification of sediment. ... what is 
called a volcanic rock  not really igneous, but also originating from lava. ... can 
even float, and was called by ancient sailors the foam of the sea. [DOC] [TLE] Three Types of Rock - Rock Formed by Cooling and Hardening ... [PAR] One type forms when melted rock cools and hardens. ... Because magma is less 
dense (and lighter in weight) than the solid rock around it, it flows upward. [DOC] [TLE] Chapter 4 Rocks and Minerals - Volcano World [PAR] Chapter 4 focuses on Rocks and Minerals, looking at types of rocks. Lessons 
included in .... Granite forms as magma cools far under the earth's surface. 
Because it hardens ... A mineral is a solid material, made of one substance, that 
occurs naturally on Earth. Most of the ..... Pumice is so light that it actually floats 
on water. [DOC] [TLE] Pumice - Wikipedia [PAR] Pumice called pumicite in its powdered or dust form, is a volcanic rock that 
consists of highly ... It forms when volcanic gases exsolving from viscous magma 
form bubbles that remain within the ... Pumice varies in density according to the 
thickness of the solid material between the bubbles; many samples float in water. [DOC] [TLE] Magnetism in Rocks [PAR] As magma or lava cool, these minerals begin to form. At this point the molten rock 
has not completely solidified, so the magnetic minerals floating in the molten... [DOC] [TLE] The Rock Cycle - Denton ISD [PAR] a cycle that continuously forms and changes rocks ... Molten rock is called 
magma when it is below the Earth's surface ... igneous rock. Igneous rocks form 
when molten rock cools and becomes solid. ... pumice rocks will actually float in 
water. [DOC] [TLE] Scoria: Igneous Rock - Pictures, Definition & More - Geology.com [PAR] Scoria forms when magma containing abundant dissolved gas flows from a 
volcano or ... If the molten rock solidifies before the gas has escaped, the bubbles 
become ... The vesicles in pumice contain enough air that the rock will float on 
water. [DOC] [TLE] The Rock Cycle - Rocks for Kids [PAR] ... into 3 Types. They are classified by how they were formed: IGNEOUS, 
SEDIMENTARY and METAMORPHIC ... is made. Igneous rocks form when 
molten lava (magma) cools and turn to solid rock. ... It is the only rock that floats. 
There are 5... [DOC] [TLE] Unit 3 Rock Cycle Sedimentary Igneous Metamorphic Rocks 2.1.1.ppt [PAR] Explain the formation and destruction of the 3 types of rocks; Explain how 
physical ... Igneous rocks form when molten rock cools and becomes solid. ... 
Pumice rocks are igneous rocks which were formed when lava cooled quickly 
above ground. ... This rock is so light, that many pumice rocks will actually float in 
water. [DOC] [TLE] The Rock Cycle - Home Science Tools [PAR] 'Solid as a rock. ... Just like the water cycle, rocks undergo changes of form in a 
rock cycle. ... Igneous rocks are formed when hot magma (melted rock) is rapidly 
cooled, either by ... Because of all those air pockets, pumice can actually float! [DOC] [TLE] magma - National Geographic Society [PAR] Oct 31, 2014 ... This mixture is usually made up of four parts: a hot liquid base, called the melt; 
minerals ... This magma solidifies in the air to form volcanic rock called tephra. In 
the ... The densest magma sinks near the bottom of the chamber. [DOC] [TLE] ROCKS [PAR] Intrusive igneous rock is formed within the earth when magma becomes trapped 
in pockets and then cools slowly. ... This rock is so light, that many pumice rocks 
will actually float in water. Pumice is actually a kind of glass and not a mixture of 
minerals. Because this rock ... It is under so much pressure that it is solid. It has a
... [DOC] [TLE] Igneous Rocks - Tulane University [PAR] Sep 3, 2015 ... Igneous Rocks are formed by crystallization from a liquid, or magma. ... Magma 
Type,

Question: Formed from solidified lava, this type of rock actually floats
Answer: pumice