Science Test 5

What allows molten rock and hot gases to escape from within the earth?

A break that appears at the boundary between two moving masses of rock is known as this . . .

The outer most layer of the Earth is called the

A __ is a circle of volcanoes and earthquakes along the rim or outer edge of the Pacific Ocean.

Earth's inner core is

What scientist would study earthquakes?

Holes or cracks which serve as escape vents for underground gases are called this . .

Smaller fragments of molten rock that solidify almost instantly are called this . . .

What is the inner and outer core mostly made of?

Any trembling or shaking of the earth's crust is defined as a(n)

The ______________ is the innermost layer of the Earth.

volcano formed by eruptions of mostly tephra and very little lava

what is created when trapped gases blast through the earth's surface

volcano formed from large amounts of very fluid lava built up gradually

Temperature and pressure (increase, decrease) with depth beneath Earth’s surface.

Volcano that has been active at some time in recorded history but has not had a recent eruption

Compared to the other layers of the Earth, the crust is:

Underwater mountain ranges are called.....

A Volcano characterized by hot clouds of gas and dust that it expels.

Occurs when natural acids slowly eat into rock, breaking it apart

A volcano that has not erupted in recorded history

What is the Moho?

What is the liquid layer of the Earth's core that lies beneath the mantel?

Which of these is the depression found at the top of a volcano?

what is the measure of the strength of an earthquake called?

the process by which new soil is formed as rocks crumble and break into smaller pieces

Melted rock that has reached the Earth's surface through a vent is called...

a volcano that produces lava fountains or fire curtains

The ___ of and earthquake is located directly above the focus.

What is the name of the middle layer of the Earth?

Earth's thickest layer, lays just beneath the crust, made of hot rock and is has plasticity (flexibility) is the mantle

Largest portion of Earth's interior 

volcano formed by alternating layers of tephra and lava

What is the name of a scientist who studies Earth structure and processes inside it

Earthquakes sometimes cause monstrous waves called

The point underground where an earthquakes begins is called this . . .