Abeka Earth Science Chapter 2

Question 1

the opening in the surface through which gases ash and rock are ejected from the interior

Accepted Answer

volcano

Question 2

The underground _______________________________ is the actual source of a volcanic eruption.

Accepted Answer

magma chamber

Question 3

the plastic rock on which the tectonic plates float is called the _________________

Accepted Answer

upper mantle

Question 4

solid ejecta larger than 2 mm in diameter

Accepted Answer

pahoehoe

Question 5

what is the boundary line between the crust and the mantle called?

Accepted Answer

moho (mohorovic discontinuity)

Question 6

the type of mountain that forms when molten rock erupts from a hole in the Earth crust is a(n)

Accepted Answer

volcano

Question 7

what is the fracture zone between stationary and moving rocks called

Accepted Answer

fault

Question 8

the idea that rocks on a fault spring to a position of little or no stress after an earthquake

Accepted Answer

elastic rebond theory

Question 9

What is the main difference between a dike and a sill

Accepted Answer

A dike is vertical, and a sill is horizontal

Question 10

large, irregularly shaped lump made of lava that Hardens before being thrown out of the volcano

Accepted Answer

volcanic block

Question 11

a volcano that probably will not erupt again

Accepted Answer

extinct volcano

Question 12

an underground channel that formed when surface lava Harden before the lava underneath it

Accepted Answer

lava tunnel

Question 13

hardened lava that forms rough Jagged rocks with a crumbly texture

Accepted Answer

ash

Question 14

A volcano that is inactive but can erupt again

Accepted Answer

dormant volcano

Question 15

slickenside a cliff along fault has been polished. How do slickensides provide evidence for it

Accepted Answer

the rocks have a fault that runs smooth fault scarfs

Question 16

The fastest type of earthquake wave are _________ waves

Accepted Answer

p waves

Question 17

small earthquakes that often follow a larger earthquake at frequent intervals are called ______

Accepted Answer

aftershock

Question 18

The strength of a volcanic eruption is measured using a scale called the

Accepted Answer

richter scale

Question 19

superheated cloud of gas and small particles that travels as an avalanche

Accepted Answer

pyroclastic flow

Question 20

who won the volleyball game for jv?

Accepted Answer

the other team...

Question 21

the general name for a mass of underground volcanic rock is a ____________________________

Accepted Answer

igneous intrusions

Question 22

volcanologist placed instruments near volcano to predict when volcano rocks Which is chosen

Accepted Answer

Seismometer, to detect earthquakes by underground pressure

Question 23

the molten rock beneath the surface of the Earth is called _________________________

Accepted Answer

lava

Question 24

What is the bottom of the mantle called

Accepted Answer

mantle-core space

Question 25

What is a computer system that stores and processes Geographic data from various sources?

Accepted Answer

GIS, geographic information system

Question 26

ShakeMap shows strength of an earthquake varies throughout area Which earthquake scale is used?

Accepted Answer

Modified mercalli scale because location has its own value

Question 27

A mass of underground volcanic rock that is similar to a laccolith but much larger is a _______

Accepted Answer

batholith

Question 28

how does the existence of the Ring of Fire provide evidence for plate tectonics?

Accepted Answer

most volcanoes appear to be located along subduction zones

Question 29

what is a cinder-cone volcano

Accepted Answer

a steep hill of loose fragments, either cinders, or ash

Question 30

what is the study of earthquakes called

Accepted Answer

seismology

Question 31

what is a composite volcano?

Accepted Answer

built up by many layers of hardened lava, tephra,and ash.

Question 32

lava and water solidifies almost instantly, forming rounded structures

Accepted Answer

pillow lava

Abeka Earth Science Chapter 2

Questions 32

Abeka Earth Science Chapter 2

Questions 32