Chemistry
A _____________ is a substance formed by the chemical combination of 2 or more different elements
Compoud
Is O2 a Molecule, a Compound, or Both?
Molecule
Classify the (sleeping) volcanoes that are not erupting, but the record of past eruptions suggests they may erupt again.
Dormant
____________molten rock outside the Earth's crust
Lava
Formation of magma depends on what three things
Heat, Pressure, and Water
The number of __________________ is the same number of ______________ in an atom.
Protons - Electrons
Name the subatomic particles of an atom.
Protons, Neutrons, and Electrons
Name the type of volcano that has moderately explosive eruptions of pyroclastic flow
Cinder Cone Volcano
Magma erupts as either ___________ or ____________ _________
Lava or Pyroclastic Flow
A ____________________ is created by an outward explosion of rock and other materials from a volcano
Crater
Protons location in an atom ______________________
Nucleus
Is the chemical formula NH4 a compound, molecule, or both?
Both
Name the type of volcano that forms from non-explosive eruptions with runny, less viscous lava flows.
Shield Volcano
_________________ is an inward collapse after the magma chamber has emptied from a volcanic eruption.
Caldera
Give two examples of ways one could die from a volcanic explosion
1. by being buried under a landslide or a massive amounts of ash during catastrophic eruptions
2. by suffocating on ash
3. By being knocked on the head by rocks, known as volcanic bombs, hurled out of the crater
4. by burning to death in a pyroclastic flow
5.by drowning in a tsunami generated by the shock waves of a massive eruption
6. by enormous landslides created when a cone is built up too steeply or part of the volcano collapses or breaks off
7. by being buried or swept away by a lahar
8. by dying of starvation when crops are destroyed by a blanket of ash
Electrons location in an atom _____________________
Around the nucleus
________ ______________ describe the characteristic ability of a substance to react to form new substances
Chemical Reactions
Name the type of volcano that erupts very explosively spewing out pyroclastic material followed by periods of calm lava flows.
Composite / Strato Volcano
___________ is the resistance to flow and can affect the explosivity of a volcanic eruption
Viscosity
____________ are volcanically active places on Earth’s surface that are far from tectonic plate boundaries.
Hot Spots
What is the charge of an atom?
Neutral
Name the number of elements for the chemical formula:
NaHCO3
Na 1
H 1
C 1
O 3
Volcano that has not erupted in recorded history and probably never will erupt again
Extinct
____________ _______________ ____________ is a numeric scale that measures the relative explosivity of historic eruptions. Volume of products, eruption cloud height, and qualitative observations
Volcanic Explosivity Index
Most volcanic eruptions are _____________ and help build the crust
non-explosive