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?
The ends of magnets.
What are poles?
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 "soft 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?
Electricity is produced in the outer core creating the earth's what?
What is magnetic field?