Volcanoes

In which of the following locations do volcanoes not form?

• subduction zones

• divergent boundaries

• transform faults

• hot spots

Which of the following lava formations forms underwater?

• pahoehoe

• lava tube

• pillow lava

• AA

Which of the following lava formations is smooth and has a rippled appearance?

• pahoehoe

• lava tube

• pillow lava

• aa

Which of the following lava formations forms an underground tunnel?

• pahoehoe

• lava tube

• pillow lava

• aa

What property of magma describes its resistance to flowing?

• color

• lava

• viscosity

• melting point

Which type of magma tends to cause explosive eruptions almost every time it erupts?

• megalithic

• andesitic

• rhyolitic

• basaltic

Which of the following hazards is not usually associated with volcanoes?

• pyroclastic clouds

• tornados

• ash

• lahars

Which volcano type is the most cone shaped?

• cinder

• shield

• elliptical

• composite

Which of the following gases is not associated with volcanic eruptions?

• CO₂ (carbon dioxide)

• SO₂ (sulfur dioxide)

• O₂ (oxygen)

• CO (carbon monoxide)

Which of these is not a warning sign volcanic eruption?

• rising rock temperature

• elevation or shape change

• earthquakes

• lava flows