Unit 5 Chapter 4: "Earth's Fiery Volcanoes" Quiz

1.) What happens when lava from a volcano flows down to the ocean?

• a.) It sets the ocean on fire.
• b.) It cools to form rock and makes the shore bigger.
• c.) It creates hotspots and geysers.
• d.) nothing

2.) Many people called 1816 "the year without a summer." Why?

• a.) because the Earth stopped spinning
• b.) because a volcano caused a large glacier to slide into the ocean
• c.) because a geyser caused lots of snow to fall around the world
• d.) because ash from a volcano blocked sunlight around the globe

3.) Which words best describe a volcano?

• a.) a hill or a mountain with a magma chamber
• b.) a river or a stream inside of a crater
• c.) a cave or a canyon with a geyser
• d.) a lake or a pond with warm water

4.) Describe how a volcano grows bigger.

5.) Mount Vesuvius and Mount Fuji are both...

• a.) extinct volcanos
• b.) dormant volcanos
• c.) active volcanos
• d.) the world's largest volcanos

6.) Where do you mostly find volcanos?

• a.) at the bottoms of canyons craved by rushing rivers
• b.) at the boundaries of tectonic plates moving apart or colliding
• c.) at the bottoms of valleys covered with tall trees
• d.) at the boundaries of glaciers moving into the ocean

7.) How many active volcanos lie around the edges of the Pacific Plate to form the Ring of Fire?

• a.) 45
• b.) more than 450
• c.) 4,500
• d.) more than 45,000

8.) Hotspots allow volcanos to...

• a.) exist outside of tectonic plate boundaries
• b.) only exist in the Pacific Ocean's Ring of Fire
• c.) gradually cool and become glaciers
• d.) become extinct

9.) Describe how a hotspot formed the Hawaiian Islands.

10.) What are geysers?

• a.) islands formed by volcanos in the middle of the ocean
• b.) places where tectonic plates meet
• c.) volcanos that erupt daily at the bottom of the ocean
• d.) water erupting from the ground that’s heated by a magma chamber