Rocks
Igneous rock that floats
What is pumice?
what all minerals eventually form
What are crystals?
best conductor of electricity
What is silver?
Studies minerals
What is a mineralogist?
two types of weathering
What are chemical and physical?
Sedimentary rock made of chalk
What is limestone?
"mudball"
What is a geode?
best low-cost conductor of electricity
What is copper?
Studies the surface of the earth
What is a geologist?
oil in its natural state
What is petroleum or crude oil?
Igneous "volcanic glass"
What is obsidian?
the hardest substance
What is a diamond?
is liquid at room temperature
What is mercury?
Explores caves
What is a spelunker?
durable, artificial rock
What is concrete?
Sedimentary rock that smells like mud when wet
What is shale?
hard minerals that have not been polished
What is gemstone?
is lightweight, nonmagnetic, and rustproof
What is aluminum?
scientists who study fossils
What is a paleontologist?
an underground spring that shoots streams of boiling water into the air
What is a geyser?
Metamorphic rock formed from limestone
What is marble?
colours are from impurities in it
What is quartz?
used as a source of nuclear power
What is uranium?
Used nature in his sermons
Who is Charles Spurgeon?
plants and animal remains that have turned to stone
What are petrified fossils?