Rocks
Any trace of a plant or animal left in a rock?
What is a fossil?
A metal that is a good conductor of electricity; two of its alloys are brass and bronze.
What is copper?
Any hollow space in the earth's crust that has formed naturally and is large enough for a person to enter.
What is a cave?
The area surrounding a magnet in which the force of the magnet affects other objects.
What is a magnetic field?
Most commonly used practical metal; used for thousands of years to make tools.
What is iron?
This rock is formed at the earth's surface, cools rapidly, and has a fine-grained appearance.
What is extrusive?
One of the most beautiful and most widely used rocks that began as limestone.
What is marble?
God designed this animal to live either in a cave or above a cave.
The magnetic field produced by the earth.
What is the magnetosphere?
A rock containing a metal together with impurities.
What is an ore?
A hard, shiny, black coal; expensive to mine.
What is anthracite?
The most common igneous rock that can be found everywhere on land?
What is granite?
A rock that consists of rounded pebbles in hardened clay or sand.
What is a conglomerate rock?
The study of caves.
What is speleology?
Rock formed when molten rock solidifies.
What is igneous?
Small deposits of igneous and metamorphic crystals.
What are gemstones?
A common type of coal, also know as "brown coal".
What is bituminous?
This rock is used to flavor food and salt roads.
This type of igneous rock remains in a pocket below the surface, cools slowly, and has a course-grained texture.
What kind of cave is formed by water and acid dissolving underground rocks.
What is a solution cave?
Rock formed from sand and mineral fragments that have been pressed together.
What is sedimentary rock?
The hardest known mineral; found in "pipes".
What are diamonds?
The poorest quality of coal, also known a "brown coal".
What is lignite?
Sedimentary rock used in the production of glass.
What is sandstone?
The earth's outer core produces this by circulation of its liquid metal.
Hint: There are two things produced.
What is the electricity that produces the earth's magnetic field.
A type of animal that visits a cave regularly but must return to the surface for food.
What is a trogloxene?
Rock that has been changed by extreme heat or pressure into a new kind of rock.
What is metamorphic rock?
The rarest, most durable and beautiful gems.
What are precious stones?
A thick, dark, flammable liquid; considered a liquid fossil fuel.
What is petroleum?
The only stone formed by living animals.
What is reef limestone?
This rock is formed at the earth's surface, cools rapidly, and has a fine-grained texture.
What is extrusive rock?
How is a stalagmite different from a stalactite? You do not have to answer in the form of a question.
A stalagmite grows up from a ground and a stalactite grows down from the ceiling.
Over 75% of the earth's surface is covered with this rock.
What is sedimentary?
This metamorphic rock began as shale, is very hard, and has leaflike layers.
What is slate?