Earth Science Quiz 2 Unit 2

Front 1

magma that is a mix of basaltic and rhyolitic; eruption may or may not be explosive

Back 1

andesitic magma

Front 2

magma that has low viscosity and low silica and gas content; eruption is non-explosive

Back 2

basaltic magma

Front 3

volcano formed of volcanic rock and ash; erodes quickly

Back 3

cinder cone volcano

Front 4

volcano that is steep and tall; formed of lava and volcanic debris

Back 4

composite volcano

Front 5

non-explosive or very mild volcanic eruption

Back 5

Hawaiian eruption

Front 6

an active area of volcanoes due to a consistent source of magma in the asthenosphere

Back 6

hot spot

Front 7

the most powerful, most explosive volcanic eruption

Back 7

plinian eruption

Front 8

volcanic flow that contains a high concentration of gases, ash, and small rocks

Back 8

pyroclastic flow

Front 9

magma that has a high viscosity and high silica and gas content; eruption tends to be very explosive

Back 9

rhyolitic eruption

Front 10

volcano that has tall, broad slopes; formed by repeated, gradual lava flows

Back 10

shield volcanoes

Front 11

an intermittent explosive volcanic eruption

Back 11

strombolian eruption

Front 12

ability of a substance to resist flowing

Back 12

viscosity

Front 13

the three parts of a volcano:

Back 13

magma chamber, central vent, crater

Front 14

the lava least likely to form a pyroclastic flow

Back 14

basaltic

Front 15

the height of a volcano determines its explosive power t/f

Back 15

false

Front 16

volcanic eruptions occur because of : (3)

Back 16

magma that needs to be released, plate tectonics, and stress and pressure

Front 17

The ring of fire is where many volcanoes occur because the ____ plate is subducted in nearly every region

Back 17

pacific

Front 18

plinian eruption

Back 18

rhyolitic

Front 19

hawaiian eruption

Back 19

basaltic

Front 20

strombolian eruption

Back 20

andesitic

Front 21

energy produced from the heat of magma and other volcanic materials

Back 21

geothermal energy

Front 22

an avalanche of water, mud, and other materials that a volcanic eruption can produce

Back 22

lahar

Front 23

volcanic rock and debris that is blasted from a volcano during an eruption

Back 23

tephra

Front 24

what state was formed by volcanic explosions?

Back 24

hawaii

Front 25

the respiratory system can be injured by inhaling ___

Back 25

ash

Front 26

Determine if these are hazardous, beneficial, or both.
pyroclastic flows

Back 26

h

Front 27

volcanic ash

Back 27

hb

Front 28

geothermal energy

Back 28

b

Front 29

lahars

Back 29

h

Front 30

lava flows

Back 30

h

Front 31

volcanic materials

Back 31

b

Front 32

an areas climate can be altered by a volcanic eruption t/f

Back 32

true

Front 33

what are lahars?

Back 33

mud flows

Front 34

what is tephra?

Back 34

solid material blasted into the air

Front 35

volcanic eruptions can ________

Back 35

help create land

Front 36

they also form ______

Back 36

our atmosphere

Front 37

Volcanic eruptions help make soil _____

Back 37

fertile

Front 38

makes useful products like _________

Back 38

metals, gems, and building supplies

Front 39

instrument used to measure volcanic gases

Back 39

correlation spectrometer

Front 40

gassy smoke released by a volcano

Back 40

plume

Front 41

instrument used to measure ground swelling

Back 41

tiltameter

Front 42

what kind of volcano is most expected to erupt?

Back 42

active

Front 43

how can a scientist predict how explosive a volcano will be?

Back 43

by studying the composition of the rock

Front 44

warning signs that a volcano will soon erupt? (3)

Back 44

earthquakes or tremors, ground swelling, smoke plumes

Front 45

volcano is emitting gases.

Back 45

COSPEC

Front 46

small tremors are occurring.

Back 46

seismograph

Front 47

The ground by a volcano is moving upward.

Back 47

tiltameter

Front 48

Through monitoring, scientists can predict a volcanic eruption; the problem is that they don't always have the resources to enable them to do so. t/f

Back 48

true

Front 49

a large mass of hardened igneous rock beneath all layers of sedimentary rock

Back 49

batholith

Front 50

vertical intrusion of magma between rock layers

Back 50

dike

Front 51

igneous rock that forms on Earth's surface

Back 51

extrusive

Front 52

a volcanic island undersea that has been cut off by wave erosion

Back 52

guyot

Front 53

intrusive rock that pushes its way between sedimentary strata in the shape of a dome

Back 53

laccolith

Front 54

an underwater volcano

Back 54

seamount

Front 55

horizontal intrusion of magma between rock layers

Back 55

sill

Front 56

tall feature that forms when the sides of a volcano erode, leaving the rock that filled the central vent of the volcano

Back 56

volcanic neck

Front 57

Which intrusive feature may start as a sill but, as more magma builds, push upward like a lens?

Back 57

laccolith

Front 58

you can usually tell the difference between calderas and craters by studying ________

Back 58

a feature's size and formation

Front 59

If you see a very tall, rock feature that looks like a jagged, rectangular block sticking out of the ground, you're probably observing a _____.

Back 59

volcanic neck

Front 60

what is the ring of fire?

Back 60

a ring of volcanoes around the pacific