The measure of a material's resistance to flow

The composition of the magma

The temperature of the magma

The dissolved gases in the magma

Composition of the magma

Temperature of the magma

Dissolved gases in the magma

Slide to the left, take it back now ya'll. One hop this time, two hops this time.

Its viscosity increases

Its composition changes

Its viscosity decreases

It does not affect the magma

Temperature

Pressure

Humidity

Altitude

Ocean Trench

Freeze! Everybody clap your hands!!

Crater

Vent

Water vapor and carbon dioxide

Oxygen and nitrogen

Methane and sulfur dioxide

Hydrogen and helium

It flows easily

It produces more violent eruptions

It produces less violent eruptions

It does not affect the eruption

Dissolved gases

Magma composition

Viscosity of magma

Temperature of magma