Show:
Earth
Volcanoes
Glaciers
Earthquakes
Earth Layers
100
Changes in the Earth's surface usually happen at this speed.
Slow speed
100
What is the name of the melted rock that comes out of a volcano?
Lava
100
Glaciers only form in places where the weather is...
cold and snowy
100
How do you stay safe in an earthquake?
drop, cover, and hold on. avoid falling objects
100
This is the outer layer of the Earth.
The crust
200
The Earth is made up of many sections called...
Plates
200
What is the melted rock under the surface of the volcano?
Magma
200
Glaciers move in this direction.
Downwards
200
Earthquakes are caused by...
pressure building as plates shift
200
This is the second and largest layer of the Earth.
The mantle
300
These are cracks in the Earth made by moving plates.
Faults
300
What is the local volcano that had a huge eruption in 1980?
Mt. St. Helens
300
How fast do glaciers move?
Very slowly. (speed of fingernails!)
300
How often are earthquakes happening?
every minute
300
These are the two innermost layers of the Earth.
The inner core and the outer core.
400
Lava can melt rocks to form new rocks. What type of rock are these new rocks.
Igneous rocks
400
How can a volcano affect an area hundreds of miles away from where it explodes?
The ash floats in the air very far distances and can cause fog.
400
These used to cover the Earth millions of years ago in the ice age.
Glaciers
400
What is the scale that measures earthquakes from 1-12?
The Richter magnitude scale
400
The outer core of the Earth is (solid, liquid, gas).
liquid
500
What are the three directions that plates move in?
Towards each other (convergent) Away from each other (divergent) From side to side (transform)
500
How do volcanoes change the Earth's surface?
The lava can melt rocks and the explosion blast can physically destroy the land.
500
How do glaciers affect the Earth's surface?
Glaciers cause erosion as they go down the mountain. The debris they carry shapes the land.
500
How do earthquakes affect the Earth's surface?
rapid movement of plates can move and reshape the land
500
The inner core of the Earth is (solid, liquid, gas)
solid