Volcanoes

The Earth's crust is broken into pieces called

• glass

• rocks

• Tectonic plates

• lava

If lots of lava flows out in one spot on the surface of the Earth it forms a mountain and is called

• magma.

• an ocean.

• a volcano.

• a ring.

What is molten rock that has reached the Earth's surface?

• Aa
• Lava
• Magma
• Pahoehoe

What is molten rock that has formed deep within the Earth?

• Hot Spot
• Magma
• Lava
• Volcano

A subduction zone is...

• plates pull apart.
• the continental plate slides under the oceanic plate.
• where the oceanic plate slides under the continental plate.
• plates slap each other a high five.

Where are volcanoes most likely to form?

• along plate boundaries

• near the center of continents

• near water

• on the moon

One major belt of volcanoes that surrounds the Pacific Ocean

• Ring of Fire

• Ring of Asia

• Ring o' earthquakes

• Ring a ding ding

Magma that reaches the surface is called:

• Vent
• Hot spot
• Lava
• Cinders

The belt of volcanoes around the rim of the Pacific Ocean is called:

• Island arc
• Ring of Fire
• Lava plateau
• Hawaii

Shield volcanoes have:

• gently sloping sides
• a steep cone shape
• moderately sized sides
• long cracks along plate boundaries