Earth Sci L1-3 Review!!

Leap Year

Month of June

1. Earth has an oblate spheroid shape

2. unequal heat distribution due to axial tild (23.5 degrees)

365.24 days - one complete orbit around the sun

axis is tilted away from the sun

• equal length of day and night

• happens during month of September

Month of June

Month of June

Month of december

happens on March

Earth's thinnest and outermost layer.

upper layer that is granitic

lower and denser layer that is basaltic

region between crust and mantle

accumulation of materials

• beneath the crust that has 2 layers

• 2900 km thick (83% of Earth's volume)

Causes Earthquakes due to its weak layer

A layer of molten iron and nickel that creates magnitism and is made up of molten liquid.

Made up of solid, iron and nickel

Responsible for the Earth's magnetic field

developed the continental drift theory

Means "all land" and refers to the idea that the continents were once one large land mass that began to break millions of years ago

fit together like jigsaw puzzles

scratches in the surfaces of the continents that acts as proof of existence of glaciers

rocks underwent climatic regime

similar fossils found in several continents

similar type, age and sequence of layers of rocks such as igneous sedimentary and metamorphis

divergent, convergent, transform boundaries.

A plate boundary where two plates move away from each other in other words, divide.

(ex. n. american and eurosian plate)

hot air rises while cold air sinks

extreme heat

1. Underwater Mountain Ridges

2. Convection Currents

3. Magma Rising

4. Mid-Oceanic Ridges

1. Grabens

2. Space between highlands

3. Space between mountains

4. East African Valley

1. small segments in a single landmass

2. iceland - n. American and Eurasian

two plates collide.

oceanic plates descend in the mantle because it is denser

1. Oceanic-Oceanic

2. Continental-Continental

3. Oceanic-Continental

• two plates slide past each other.

• ex. san andreas fault

Natural shaking of ground that causes rapid release of stress in rocks, foreshocks and aftershocks.

fracture of one body of rocks that slide past each other

Point where earthquakes originate underground.

location or point of the earth's surface directly.

travels through solids and liquids

known as shear waves that travels through solids only

1. Love waves

2. Rayleigh waves

causes damage and destruction and travels only through the crust

Travels through the lithosphere that causes ripples

detect ground motion

reduction of stiffness and strength of soil

huge waves generated by an earthquake in coastal areas

energy released by an earthquake

causes fault scarps in the ground surface

locating the epicenter by using ground motion (atleast three)

amount of damage caused by the earthquake

planet Earth spins (wobbles) on its own axis.

June