Question | Answer |
The hardest of all substances | diamond |
The rarest gemstone | ruby |
Scientists who study minerals | mineralogists |
The brown or black rocklike substance used for fuel | coal |
Oil in its natural state is called crude oil or | petroleum |
The preserved remains of plants or animals are called | fossils |
Person who explores caves | spelunker |
Used in plaster of Paris | gypsum |
Easily broken into flat sheets | mica |
"Mud Ball" filled with crystals inside | geode |
Used in pencils | graphite |
Used for arrow heads | flint |
Best conductor of electricity | silver |
Most useful metal | iron |
Metal that is liquid at room temperature | mercury |
Radioactive metal used as a source of nuclear power | uranium |
Lightweight, silvery colored, rustproof metal | aluminum |
Two types of weathering | chemical and physical |
Three types of rocks | igneous, sedimentary, metamorphic |
Examples of igneous rocks | obsidian, pumice, granite, basalt |
Examples of sedimentary rocks | limestone, shale, sandstone |
Examples of metamorphic rocks | marble, slate |
Scientist who studies the earth | geologist |
Name the four layers of the earth | crust, mantle, outer core, inner core |
Is the crust solid, liquid, or both? | solid |
Is the mantle solid, liquid, or both? | both |
Is the outer core solid, liquid, or both? | liquid |
Is the inner core solid, liquid, or both? | solid |
Molten rock in the earth's mantle | magma |
Decaying plant and animal material found in the soil | humus |
Very durable artificial rock | concrete |
This rock smells like mud when it is wet | shale |
Rock used to make chalkboards | slate |
All minerals form a special kind of solid called a | crystal |
Rare, beautiful minerals that are very hard but have not yet been polished | gemstones |
Underground spring that shoots streams of boiling water and steam up into the air from time to time | geyser |
Plant and animal remains that have turned to stone are called | petrified fossils |
Fossils that form when mud buries a plant or animal and them quickly hardens around it | mold fossils |
Scientist who studies fossils | paleontologist |
Most fossils were probably formed | During Noah's Flood |