Show:
Earth & Soil
Rocks
Minerals
Metals
Fossils & caves
100
molten rock in the earth's mantle
What is magma?
100
very durable artificial rock
What is concrete?
100
the hardest substance
What is diamond?
100
most useful metal
What is iron?
100
oil in its natural state
What is petroleum
200
decaying plant and animal material in the soil
What is humus?
200
rock that smells like mud when it is wet
What is shale?
200
rocklike object that looks like a mudball
What is geode?
200
the only metal that is a liquid at room temperature
What is mercury?
200
underground spring that shoots streams of boiling water
What is a geyser?
300
scientist who studies the structure of the earth
What is a geologist?
300
granite, pumice, obsidian
What are igneous rocks?
300
rarest gemstone
What is ruby?
300
best conductor of electricity
What is silver?
300
plant and animal remains that have turned to stone
What are petrified fossils?
400
a person who studies minerals
What is a mineralogist?
400
limestone, sandstone, shale
What are sedimentary rocks?
400
all minerals forma special kind of solid called ___
What is crystal?
400
radioactive metal used for nuclear power
What is uranium?
400
fossils that form when mud buries a plant or animal and then quickly hardens
What are mud fossils?
500
scientists who study fossils
What are paleontologists?
500
slate, marble
What are metamorphic rocks?
500
rare, beautiful minerals that have not yet been polished
What are gemstones?
500
lightweight nonmagnetic metal
What is aluminum?
500
when most fossils were probably formed
What is during Noah's time