Investigating God's World Chapter 4 test
aluminum
a lightweight, silvery-colored metal that can be formed into almost any shape. It is strong, rustproof, and about one third the weight of iron.
uranium
a silvery-white, radioactive metal, is the primary source of nuclear power
crystal
a solid form of a substance having a definite shape, flat surfaces, and sharp edges
geyser
a spring from which columns of boiling water and steam erupt into the air at intervals
humus (definition)
decaying plant and animal material
gems
gemstones that have been cut and polished
graphite
is a mineral that is used instead of lead in our pencils
print fossil
is formed when the animal tracks of an animal in the mud that contained the print hardened into rock; they are important because they show the design of a bird's feathers or the structure of leaves and plants.
radio-active
it gives off rays of energy and tiny atomic particles
soil
loose earth
cement
one of our most important building materials. It is made by combining water, sand, and gravel in proper proportions
spelunker
people who enjoy exploring caves
petrified fossils
plant and animal remains that have turned to stone
gemstones
rare, beautiful minerals which are very hard
geode
rock-like object that looks like a hard mud-ball. It may be hollow or solid and contains beautiful crystal formations made of calcite, quartz, or other minerals.
Mineralogist
scientist who study minerals
paleontologist
scientists who study fossils
silver
the best conductor of electricity
iron
the most useful metal
mercury or quicksilver
the only metal which is a liquid at room temperature
Geologiest
the scientist who study the structure of the earth, are the treasure hunters of today
coal
A black or brown rock-like substance that is found in layers of rock. In many countries, it is used to heat homes.
chemical and physical
Geologist refer to two major forms of weather; __________________
concrete
Hardened cement makes an artificial rock called __________.
diamond
Hardest of all substances; crystals of carbon
sedimentary
Limestone, sandstone, shale are examples of what type of rock?
metamorphic
Marble and slate are examples of what type of rock?
igneous
Pumice, obsidian, and granite are examples of what type of rock?
humus
Soil contains ___________ and tiny pieces of weathered rock
slate
Some chalkboards are made from _______ and, in some countries, school-children still use ___________ instead of paper.
ruby
The rarest gemstone; red stone
shale
The sedimentary rock ___________ can be formed from mud (usually clay); ___________ even smells like mud when it gets wet.
molten
melted
magma
molten rock that moves like pliable (soft plastic)
petroleum or crude oil
names for oil in its natural state
