Volcanoes
Where is the most active volcano on earth located?
Hawaii
What two things can cause a tsunami to start?
underwater volcanoes or earthquakes underwater.
What is an earthquake?
The shaking of the Earth's surface.
What is erosion?
When soil and rock are removed by wind or water.
What are the 3 sudden changes to the Earth's surface?
Landslides, mudslides, and avalanches.
What is lava?
Liquid rock that has come out of a volcano.
Explain how a tsunami starts and ends.
An earthquake underwater occurs, small waves form and travel and turn into big waves, big waves crash onto the land.
What causes an earthquake?
Pieces of Earth's crust move quickly.
Does erosion by wind happen quickly or over a long time?
Over a long time, it is slow.
What is a landslide?
a large amount of dry soil and rock that slides down a steep slope or mountain.
Where can we find volcanoes?
On many continents and countries or underwater.
In what ocean do most tsunamis happen?
Pacific Ocean
How long does an earthquake usually last?
Usually less than a minute.
How can rain cause erosion?
It splashes to the ground and moves small rocks or soil. A lot of rain can cause a flood.
What is a Mudslide?
A large amount of wet soil and rock, or mud, that slide down a steep slope or mountain.
How can volcanoes be a bad thing?
How can people protect land from tsunamis?
Build floodgates (big walls), planting mangrove trees to slow down the waves and catch the trash.
What are 3 effects of an earthquake?
Split roads, crumbling buildings, floods, people or animals get hurt.
What are the three causes of erosion?
Wind, water, and ice
What is an avalanche?
a large amount of snow, soil, and rock that slides down the side of a mountain.
How can volcanoes be a good thing?
Create new landforms, used to create tools, produce heat for energy.
What should people do if they see a tsunami coming?
Try to get to high ground, like a hill or mountain.
How can engineers design a building to remain standing during an earthquake?
Strong, flexible materials, wide base, triangle shapes
Name 2 ways that people prevent (or stop) erosion.
Planting trees, covering soil with rocks or mulch, or building walls.
How can a wildfire be very destructive?
It can burn away all the plants in an area, it can kill animals and people, it can cause a mudslide.