Earth Layers
How many layers does the earth have?
4
What is the crust made of?
Soil, rocks, sediment, minerals
What is an earthquake?
Earth vibrations
What is a volcano?
A mountain with Lava
How do you measure Earthquakes?
Seismograph
What is the outer layer of the earth called?
Earth's crust
How thick is the Earth's crust?
5 kms
Can humans cause earthquakes?
Yes, fracturing
What do volcanoes erupt into the air?
Ash, gases, lava
How do we predict earthquakes?
We can't
What is the second layer called?
Mantel
What is the deepest humans have lived?
85 m, 279 ft
What can cause earthquakes?
Tectonic plates moving
What is the difference between magma and lava?
How do we predict volcanoes erupting?
Measuring pressure from lava
How dense is the core: liquid, solid, gas?
Solid
What do you call scientists that study Earth's crust?
Geologists
What would you feel in a 0-2 level earthquake?
Nothing
Why do volcanoes erupt?
Weakness against pressure of lava building
What is a tsunami?
Tidal wave
What do you call Erath's crust under the ocean?
Oceanic crust
What moves under the Earth to create earthquakes?
Tectonic Plates
Total descruction
What happens to lava in water?
Turns from liquid lava to solid rock
How does a seismograph work?
pen moves to earth's vibrations