6th Science Chap 3

Sand and mineral fragments that have been pressed together form this type of rock

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

T/F A volcano allows molten rock and hot gases to escape from within the earth.

Any trembling or shaking of the earth's crust is defined as this . . .

This metal is a good conductor of electricity.

The area surrounding a magnet where the force of the magnet effects other objects.

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

Earthquakes sometimes cause very large waves called this . . .

T/ F Chemical weathering occurs when natural acids slowly eat into a rock.

T/ F A magma chamber is created when trapped gases blast through earth's surface

A volcano that has not erupted in recorded history

The study of earthquakes is called this . . .

The rarest, most durable and beautiful gems are called this . . .

The ends of a magnet are called this . . .

Any trace of a plant or animal left in a rock

This is the scientist that studies the structures of the earth

The hardest known mineral. It is commonly found in volcanic pipes.

The process by which new soil is formed as rocks crumble and break apart

Small deposits of igneous and metamorphic crystals

A volcano that has erupted recently

T/ F The temperature of rocks decreases with depth

A volcano that produces lava fountains or fire curtains is called this . . .

Any rock containing a metal together with impurities

T/ F The Strength of an earthquake is called the magnitude.

The hardest material that composes the earths crust is called this . . .

When melted/molten rock solidifies, it forms this type of rock . . .

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

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

The boundary between the earth's crust and its mantle

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

The underwater mountain ranges are called this . . .

A volcano this was active but it has not been active recently is called this . . .

The magnetic field produced by the earth is called this . . .

The place at ground level that is directly above the focus of an earthquake is called this . .

Any hollow space in the earth's crust that is large enough for a person to fit into.