Volcanoes around the World
Most volcanoes in the world create a pattern called _________________.
The Ring of Fire
What are two types of lava rocks?
Basalt and felsite
True or False: A mountain will last forever.
False!
True or False: If you are going camping, there is no way to tell if the spot you choose is safe from a landslide.
False. You can look at the weather forecast (for rain) and the slope of the hill.
Complete this sentence with an old Word of the Week:
When Allison broke her leg, she was _________ and needed a wheelchair for two weeks.
immobile
True or False: There are NO volcanoes in the United States.
False. There are volcanoes in Hawaii, Alaska, and along the west coast in California, Washington, and Oregon.
Explain how cone volcanoes get their shape.
Cone volcanoes have thick lava. After it erupts, the lava is heavy and drops to the sides. When it hardens it creates a steep hill.
Explain how the pyramids the Ancient Mayans built disappeared in the jungles of South America.
Root wedging caused the pyramids to break. Trees grew right in between the pyramids.
Landslides, hurricanes, tsunamis, and tornadoes are all known as _____________ hazards because they occur in nature.
natural
What is this number in standard form?
2,000,000 + 40,000 + 6,000 + 700 + 8
2,046,708
The Ring of Fire is a pattern of volcanoes that formed over time around the ______________ Ocean.
Pacific
Cone volcanoes produce __________ lava. Shield volcanoes produce ________ lava. (Thick or thin)
________________ is a natural occurrence that happens when rainwater falls into the cracks of rocks, eventually freezing and breaking them into smaller pieces.
Ice-wedging
False. In order to landslides to occur, there is usually massive amounts of rain and loose rock or soil.
In this sentence, which is the CAUSE and which is the EFFECT?
A volcano popped up on a farm in Mexico because the land was in the Ring of Fire.
CAUSE: the land was in the Ring of Fire
EFFECT: a volcano popped up on the farm
What percent (%) of the world's volcanoes are in the Ring of Fire?
75%
Explain which type of volcano explodes (cone or shield). Why does it explode?
Cone volcanoes explode. Since they have thick lava, gas bubbles get trapped inside at the top. After a long time, the pressure builds up. The pressure is so great that the volcano actually explodes and the top is blown off.
________________ is a natural occurrence that happens when seeds fall into the cracks of rocks, eventually growing and breaking them into smaller pieces.
When rain falls on the loose soil of a steep hill, a ___________ can occur.
Landslide
In this sentence, which is the CAUSE and which is the EFFECT?
If rocks tumble down a mountain, then their edges will become more round.
CAUSE: rocks tumble down a mountain
EFFECT: their edges will become more round
Paracutin, a volcano that suddenly popped up in a cornfield, is in what country?
Mexico
Why are some volcanoes shaped like a shield?
Shield volcanoes erupt thin lava. The thin lava is runny and spreads out. Then it hardens.
Describe how rocks at the bottom of a mountain look different from the rocks at the top of a mountain.
Explain how this happens.
Rocks at the bottom are usually rounder. Rocks at the top are sharp and jagged.
This is because as rocks fall and tumble down a mountain, their edges become rounder (just like the sugar cubes).
A landslide is most likely to happen when the slope of the mountain or hill is ______ degrees or more.
What game show was Miss Basile on?
Wheel of Fortune