Rock Cycle
This type of rock forms when magma cools and hardens.
Igenous
This giant wave can form after an underwater earthquake.
A tsunami
What is created when two tectonic plates crash into each other?
Mountains
What is a deep crack or crevice in the ground?
A trench
What is weathering?
When objects are broken down by wind, water or ice into smaller pieces.
This type of rock forms from extreme heat and pressure.
Metamorphic Rocks
Which type of volcano is considered dead?
An extinct volcano
What happens when two tectonic plates rub past each other?
An earthquake
What is the deepest trench on earth?
The Mariana Trench
What is erosion?
When smaller pieces of rocks and sand are moved from place to place by water, wind and ice.
This type of rocks are formed from pieces of sediment that break down and form layers.
Sedimentary Rock
This type of volcano has erupted in the past 10,000 years.
Active volcano
What happens when two tectonic plates pull away from each other?
Sea floor spreading, or the creation of baby land.
Why is much of the ocean undiscovered by people?
It is difficult to travel to the bottom of the ocean due to pressure and lack of sunlight.
Where are there more volcanos on land or under the ocean?
Under the ocean
Why is obsidian so smooth?
Because it cools so quickly.
Where does pressure build up and cause a volcanic eruption?
Magma Chamber
When one tectonic plate goes under the other which one goes on top and which one goes on the bottom?
The lighter plate goes on top and the heavier goes on the bottom
Why do many bizarre and unique creatures live near hydrothermal vents at the bottom of the ocean?
There is no sunlight that deep under water, so they have to adapt to life without it.
What is the area around the Pacific Ocean called where most of the world's Volcanos are?
The ring of fire
Which kind of rock is the most abundant (common) on earth?
Igneous
What is the difference between magma and lava?
Magma is inside the volcano, lava is outside the volcano.
What is it called when one tectonic plate goes under another?
Subduction
Explain what happens when a volcano erupts under the ocean floor.
There is seafloor spreading as the magma comes up from the core of the earth. This can trigger tsunamis and earthquakes that reach land.
These mountains formed when India collided with Asia.
The Himalayas