Lesson 1
Volcanos form along the mid-ocean ridges, where two plates move _____.
apart
Is an opening through which molten rock and gas leave a volcano is called ____.
vent
Repeated floods of molten material can from from high, level plateaus called ____ plateaus.
lava
The Ring of Fire is a major belt of _____.
volcanoes
In Japan, they believe spring begins once their national flower, the ________, starts to bloom.
cherry blossom
_____ is molten material from the mantle that has reached Earth's surface.
Lava
A volcano erupts quietly if it's magma is ______.
low in silica
When a volcano collapses a hole called a ____ is left behind.
caldera
Volcanic belts form along the boundaries of Earth's _____.
plates
One of the full moons of the spring months is called the flower moon. Which month can you see it?
May
hot spot
What do geologist call a volcano that is not likely to erupt ever again?
extinct
A _____ volcano is tall, con-shaped, and made up of alternating layers of lava and ash.
composite
Forms from magma that squeezes between horizontal rock layers and later hardens is called?
sill
What begins at the North Pole on the spring equinox?
Six months of uninterrupted daylight
_____ is an underground molten mixture of rock-forming substances, gases, and water from the mantle.
Magma
From what kind of lava does a pahoehoe form?
runny
A ___ forms when magma cuts across rock layers and then hardens.
dike
A mixture of hot gases, ash, cinders, and bombs that erupt explosively are called a(n) ______ flow.
pyroclastic
What part of a rabbit never stops growing?
their teeth
Japan and New Zealand are examples of strings of volcanic islands known as _____.
island arc
A(n) ______ is the spread of lava that pours out of a volcano.
lava flow
A volcanic neck forms when magma hardens in a volcano's ____ and the surrounding rock later wears away.
pipe
A batholith forms from a(n) _______.
large body of magma
Which bird will bring warm weather and gentle south breezes according to an old weather proverb?
The bluebird