The __-_____The __-_____cc Ridge is the Ridge is thelargest tectonic featurelargest tectonic feature

on our planet.on our planet.

Mid-Atlantic

These transverseThese transverseseismic waves seismic waves cancan NOTNOTtravel through Earth'stravel through Earth's

liquid outer core.liquid outer core.

S-waves

These compressionalThese compressionalseismic waves seismic waves cancan

travel through travel through bothboth of of Earth's inner & outer cores.Earth's inner & outer cores.

P-waves

In the past, most of theIn the past, most of thelandmass on Earth waslandmass on Earth was

concentrated in aconcentrated in asingle, large c________.single, large c________.

continent

From igneous rock dating,From igneous rock dating, we have found that the we have found that the

_____y of Earth's magnetic_____y of Earth's magneticfield has undergone manyfield has undergone many unexplained changes in unexplained changes in

periods ofperiods ofthousands of years.thousands of years.

polarity

The crust of the Earth isThe crust of the Earth iscovered by about __% of covered by about __% of

water in the hydrosphere.water in the hydrosphere.(within + or – 5%)(within + or – 5%)

70%

Which of the followingWhich of the followinglayers of the Earth is layers of the Earth is

unique among the unique among the terrestrial planets?terrestrial planets?

A) hydrosphere A) hydrosphere B) mantleB) mantleC) crustC) crust D) core D) core

A) hydrosphereA) hydrosphere

The Earth’s average overallThe Earth’s average overalldensity is about __ times density is about __ times

denser than water.denser than water.(a number from 2-9)(a number from 2-9)

5

List the Earth’s layersList the Earth’s layersfrom the center outward.from the center outward.

(do (do NOTNOT include includethe atmosphere)the atmosphere)

Inner core, outer core,mantle, crust

What is the primary gasWhat is the primary gasof Earth’s atmosphere?of Earth’s atmosphere?(highest percentage)(highest percentage)

nitrogen

What is the primary gasWhat is the primary gasof Earth’s atmosphereof Earth’s atmospheremainly derived frommainly derived from

life processes on the Earth?life processes on the Earth?

oxygen

This atmospheric componentThis atmospheric componentis vital for protecting life is vital for protecting life on Earth’s surface fromon Earth’s surface fromexcessive ultraviolet excessive ultraviolet

radiation.radiation.

the ozone layer

In which layer of Earth’sIn which layer of Earth’satmosphere do we live?atmosphere do we live?

troposphere

Which 2 parts of the Sun'sWhich 2 parts of the Sun'sradiation are responsibleradiation are responsible

for heating Earth's surface?for heating Earth's surface?(pick 2 of these)(pick 2 of these)gamma x-raygamma x-ray

ultraviolet visibleultraviolet visibleinfrared radioinfrared radio

visible & infrared

The principal greenhouseThe principal greenhousegases in our presentgases in our present

atmosphere areatmosphere are____ _____ & ____ ____.____ _____ & ____ ____.

carbon dioxide &water vapor

The ________The ________ee ____ ____tt works by trapping works by trapping

outgoing infrared radiationoutgoing infrared radiationfrom the Earth.from the Earth.

Greenhouse Effect

What percentage of Earth'sWhat percentage of Earth'satmosphere (by volume)atmosphere (by volume)is carbon dioxide (COis carbon dioxide (CO22)?)?

A) 77 B) 33 C) 21A) 77 B) 33 C) 21D) 3D) 3 E) 0.03 E) 0.03

E) 0.03%E) 0.03%

clouds

What forms when waterWhat forms when watervapor condenses out atvapor condenses out at

the cool tops ofthe cool tops ofconvection cells?convection cells?

Seismic wave(or earthquake)

SS______ ______ ww___ data is___ data isuseful in determining theuseful in determining the

structure of the Earth.structure of the Earth.

Why the sky is blue

The atmosphere’s scatteringThe atmosphere’s scatteringof light from the Sunof light from the Sun

helps explain thishelps explain thisphenomena.phenomena.

differentiated

The Earth’s layers vary inThe Earth’s layers vary incomposition and density.composition and density.Because of this, we sayBecause of this, we say

that the Earth isthat the Earth isdd________________________dd..

P, S

During an earthquake,During an earthquake,__ waves travel faster__ waves travel faster

and thus arrive sooner and thus arrive soonerthan do the __ waves.than do the __ waves.

tectonic plates

When two ______When two ______cc ____ ____sscollide, they continuecollide, they continue

moving, producing a varietymoving, producing a varietyof large deformations.of large deformations.

magnetic field

When strong solar windsare displaced poleward

by our _______c ____,we get intense

auroral displays.

The region around EarthThe region around Earthwhere the magnetic fieldwhere the magnetic fieldtraps charged particles istraps charged particles is

the __the __nn ____ ____nn Radiation RadiationBelts.Belts.

Van Allen

liquid

The presence of aThe presence of amagnetic field is a goodmagnetic field is a good

indication that we have aindication that we have a________dd metal outer core, metal outer core,

spinning rapidly asspinning rapidly aswe rotate.we rotate.