Forces that Shape the Earth Sec. 3 Volcanoes

Edit Answers
1234567891011
Across
  1. 5. Definition: Lasting for a very short time. The beauty of the cherry blossoms was ephemeral, lasting only a few weeks. The word is ephemeral.
  2. 6. A ____ volcano is a volcano that is not currently erupting but is expected to erupt again in the future. Dormant volcanoes are different from extinct volcanoes, which are not expected to erupt again.
  3. 7. _____is molten rock that exists beneath the Earth's surface. It is a mixture of liquid rock, crystals, and dissolved gases. When magma erupts onto the surface, it is called lava.
  4. 9. An ____ volcano is a volcano that is no longer expected to erupt. Extinct volcanoes have typically been inactive for a very long time, and there is no geological evidence to suggest that they will become active again.
  5. 11. The ____ of Fire is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur. It is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and mountain belts.
Down
  1. 1. An _____ eruption is a volcanic eruption characterized by the violent ejection of fragmented magma and gases. Explosive eruptions typically involve high-viscosity lava, which is thick and sticky. This traps gas, leading to a buildup of pressure that can cause a powerful explosion.
  2. 2. _____ Eruption: A ___ eruption is a volcanic eruption characterized by the relatively slow outpouring of lava. Quiet eruptions typically involve low-viscosity lava, which flows easily and doesn't trap much gas. This results in effusive eruptions with minimal explosive activity.
  3. 3. A ____ chamber is a large underground pool of liquid rock beneath a volcano. The magma in the chamber is under pressure, and this pressure can eventually lead to a volcanic eruption.
  4. 4. A _____ is a rupture in the Earth's crust that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. Volcanoes are typically formed when tectonic plates collide or diverge.
  5. 8. The eruption sent a plume of volcanic ___ high into the atmosphere. This one is 3 letters that also happens to be the name of the most famous Pokemon trainer.
  6. 10. An _____ arc is a chain of volcanic islands formed at a subduction zone where one oceanic plate is forced beneath another. As the subducted plate melts, magma rises to the surface and creates a line of volcanoes, which can eventually emerge as islands.