Science "Rocks" Test Study guide Flashcards
What is the hardest substance of all?
Diamond
The molten rock in the mantle?
Magma
Pencils contain what substance?
Graphite
People that study the earth’s structure are called?
Geologists
_______is often used to make chalkboards
Slate
Rare, beautiful minerals that are very hard but have not yet been polished are called _______.
Gemstones
All minerals form a special kind of solid called ___
crystals
A ________is a rocklike object that looks like a mud ball on the outside but is filled with crystals on the inside
Geode
What is the most useful metal?
Iron
The rarest gemstone (our birthstone)
Rubies
_________is an example of a very durable artificial rock
Concrete
The only metal that is liquid at room temperature
Mercury
A rock that smells like mud
Shale
Decaying plant and animal matter is called
Hummus
_____is the best conductor of electricity
silver
_________ is a lightweight, nonmagnetic rust proof metal
Aluminum
Two types of weathering?
Chemical and Physical
Oil in it’s natural state is called
Petroleum or crude oil
_____are fossils that form when mud buries plant or animal and then quickly hardens around it
Mold
An underground spring is called a _____
Geyser
A person who explores caves
Spelunker
Fossils were most likely formed by
The great Flood
Plant and animal remains that have turned to stone are called
Petrified
Radioactive metal
Uranium
Scientists who study fossils
Paleontologists
Category of rocks
- Granite= igneous
- Limestone= sedimentary
- Marble= metamorphic
- obsidian= igneous
- pumice= igneous
- sandstone =sedimentary
- shale= sedimentary
- Slate= metamorphic
