Mixed 1
The line of powder left by a mineral when rubbed against unglazed porcelain is called its:
Streak
The point on Earth's surface directly above where an earthquake begins is the:
Epicenter
Which metal is refined using blast furnaces?
Iron
What is the general term for a mass of volcanic rock beneath the surface?
Magma chamber
Intrusion
A volcano that will likely never erupt again is classified as:
Extinct
The way a mineral reflects light from its surface is called its:
Luster
A mineral that remains glowing after UV light exposure exhibits:
Phosphorescence
Which precious metal is considered the most valuable?
Platinum
What scale measures the explosiveness of a volcanic eruption?
VEI scale
The structure that ejects solid materials from a volcano is the:
Vent
What scale rates mineral hardness from 1 to 10?
Mohs Scale
Which is the red variety of corundum?
Ruby
Which reddish-orange metal is a good conductor of electricity?
Copper
The narrow zone of active volcanoes around the Pacific basin is called:
Ring of Fire
What type of volcano is broad and gently sloping with mild eruptions?
Shield volcano
The group of minerals containing fluorine, chlorine, bromine, or iodine is called:
Halides
When magma bulges rocks upward to produce a dome-like intrusion, it forms a:
Laccolith
Magnetite belongs to which mineral group?
Oxides
The final step of metallurgy is:
Shaping
Volcano ejecta that hardens to form a smooth or ropy surface is called:
Pahoehoe
The large group of minerals containing silicon and oxygen is called:
Silicates
Which is the green form of beryl?
Emerald
Which metal is used in radiation shielding and automobile batteries?
Lead
What type of mining involves removing pillars in a specific order?
Retreat mining
What are large pieces of solid volcanic ejecta that solidify before ejection called?
Volcanic blocks