Volcanoes
Types of Volcanoes
What is an earthquake
An earthquake is a shaking of the ground caused by the sudden movement of rock along a plate boundary
Main layers of the Earth
crust, mantle, outer core, and inner core
How long does it take the moon to make one rotation
27.3 days
What is the solar system
Consists of the sun, eight planets, and several types of smaller bodies
Difference between magma and lava
What is magnitude
is a number given to an earthquake based on it's strength
what are the 4 seasons of earth
spring, summer, fall, and winter
how long does it take the moon to make 1 revolution
29 days
Three characteristics of the inner planets
small, high density, rock surface
What are two types of lava
Aa Lava and Pahoehoe Lava
What is the Focus of an earthquake
The point below the surface where rocks first begin to move
What are the two ways in which earth move
rotation and revolution
What causes the moon phases
the angle of sunlight on the moon when it rotates around the sun
Three characteristics of the outer planets
large, low density, gaseous surface
Why do volcanoes occur along the distinct belts on earth?
At these boundaries, the crust fractures, allowing magma to rise to the surface
3 types of boundaries
what is the state of matter of the inner core
Solid
What occurs when the moon directly blocks the suns light and casts a shadow on earth
A solar eclipse
What is a comet
loose collections of ice, dust, and rocks that orbit the sun in eccentric paths
Anatomy of a Volcano
magma chamber, pipe, crater, rock fragments, ash cloud, vent, and lava flow
What are the 3 types of seismic waves
Primary waves, Secondary Waves, Surface Waves
How long does it take for earth to make one revolution
365 1/4 days
What are the phases of the moon
new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, waning crescent
Characteristics of a true planet
spherical, has cleared its orbital neighborhood of other objects or debris