Plate Tectonics
How are mountains formed?
When two plates collides with each other
The closest planet to the sun
Mercury
What are the 3 types of Volcanos
Active
Dormant
Extinct
The four main layers
crust
mantle
outer core
inner core
364 and 1/4
Heat from Earth's interior causes convection currents in Earth's...
Mantle
Names the 4 gas planets
Jupiter, Saturn, Uranus, Neptune
What is a dormant volcano
A volcano that is not active, but may become active
What are the two types of Crust
Continental and Oceanic Crust
________ effects how all things grow and change every year
Earth's axis
A depression in the ocean floor where subduction takes place is called...
Trench
What does AU stand for?
Astronomical Units
What is the different about lava and magma
Lava is at the surface
Magma is under the crust
What two layers make up the lithosphere
Crust and upper Mantle
The tilt in the Earth causes ...
the sun to appear in the sky at slightly different spot every day
Description of a Divergent Plate
Where two plates move apart
The planet with the least gravitational factor
Mercury
Describe Pahoehoe Lava
-Low in silica
-Flows very easily
- Weak eruptions
-Frequent eruptions
Which layer is the thickest
Mantle
The ________ are the longest days of the year
Solstices
Describe the Richer magnitude scale
Rates earthquakes according to the size of their seismic waves
What is Neptune's AU
30.10 AU
Define a Volcano
A volcano is a weak spot in the Earth's crust where molten magma, rock fragments and hot gases erupt
What is the inner core made out of
Mostly iron and it is soild
What are the dates of the Equinox
March 20, Sep 22