Lesson 1: "Could a Volcano Pop Up Where You Live?"
Do volcanoes usually pop up close together in a pattern, or scattered all over the place in no pattern?
In a pattern
What type of volcanoes explode?
tall cone shaped volcanoes or shield shaped volcanoes
tall cone volcanoes
What is this process called: lava cooled, and now it's solid rock. As it cooled, it left some little cracks. Those are its weak spots. Seeds can land in cracks. And when those seeds get rained on, they grow. It keeps growing. As the root grows bigger, it pushes outwards like this until, eventually, crack, it breaks the rock, making the crack wider and deeper
root wedging
What gives us clues about what the past was like long before humans?
fossils
What natural disaster occurs when rocks fall from the mountainside?
A landslide
Is it likely to find a volcano in our state? Why or why not?
No, because we live inland and not near the coast
What kind of rocks do exploding volcanoes have and what kind of rocks do non-exploding volcanoes have?
light colored or dark colored
exploding: pale, light colored
non-exploding: dark colored
What is this process called: As rainwater freezes in the crack of a rocky surface, the water expands, which pushes the rock apart-crack
ice wedging
True/False: Several animal fossils have been found that remind us of animals alive today
True
Where are landslides most likely to occur?
a. near the coast
b. near volcanoes
c. near mountains
d. anywhere
c. near mountains
Where are you most likely to find volcanoes?
near the coast
What kind of lava does an exploding volcano have? What kind of lava does a non-exploding volcano have?
thin and runny or thick and pasty
exploding: thick and pasty
non-exploding: thin and runny
What can both root wedging and ice wedging do to rocks?
Split them into smaller rocks
In our Colossal Canyon activity, what type of fossils were found at the bottom of the canyon? What clue does this give about the type of environment it was at that time?
aquatic creatures- animals that live underwater
covered with water- maybe an ocean
What makes mountainsides slippery which causes rocks to slide down the mountain all at once?
rain
What percentage of the world's volcanoes are found in the Ring of Fire?
a. 25%
b. 50%
c. 75%
d. 100%
c. 75%
What causes volcanoes to eventually explode? (think about what you had to do to your "lava" in our experiment)
Bubbles
What happens to a rock once it's broken away from the mountain and now begins to tumble downhill? (think about our sugar cube experiment)
It becomes smoother
In our Colossal Canyon activity, what kind of fossils were found at the top of the canyon? This gives us a clue that the environment was like what during this time?
leaves and land animals
dry land, maybe a forest
Fill in the blank: An angle of about __________ degrees or more are usually what worries scientists the most
a. 25
b. 35
c. 45
d. 55
b. 35
What is the line of volcanoes around the Pacific Ocean (that is one of Earth's major features) called?
The Ring of Fire
What happens to bubbles in exploding volcanoes over time?
They get trapped at the top, but can't escape until the pressure builds up and up until it's too much and the volcano explodes
Where can you find root wedging in your neighborhood?
sidewalks
Fill in the blanks: Over time, _____ and _____ can move dust, dirt, and tiny pieces of rock long distances. It then settles over bones, gets buried, and stays preserved
wind; water
True or False: The worst kind of landslides occur with rocks that are on the top of hills/mountains
False: The worst kind of landslides occur with rocks that have already tumbled down