Earth Movements (PowerPoint)

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					Earth Movements
   3rd Grade Review
Find the word that fits the clue.
A crack in Earth’s   A. Continent
crust                B. Plate
                     C. Fault
                     D. Magma
          Fault

Most fault lines are deep
in the crust, but some like
the San Andrea’s fault
can be seen on the
surface.
Find the word that fits the clue.
Hot, flowing rock       A. Vibration
below Earth’s surface   B. Plate
                        C. Magma
                        D. Fossil
  Magma


The crust and mantle have areas
 of molten rock called magma.
When a volcano erupts, magma
   comes to Earth’s surface.
Find the word that fits the clue.
Huge land mass that    A. Pangaea
may have existed 200   B. Volcano
million years ago      C. Continent
                       D. Plate
        Pangaea

Long ago, Earth had just one
   huge continent called
        Pangaea.
Find the word that fits the clue.
Rapid back and forth   A. Seismograph
movement               B. Focus
                       C. Plate
                       D. Vibration
         Vibration

  The energy given off in an
earthquake sets off vibrations.
Find the word that fits the clue.
Remains of an           A. Focus
organism that lived     B. Fossil
long ago preserved in   C. Fault
rock
                        D. Lava
                     Fossil


Fossils of tropical plants have
been found on an island in the
          cold Arctic.
Find the word that fits the clue.
A sheet of crust and   A. Plate
upper mantle that      B. Pangaea
covers Earth’s         C. Fault
surface
                       D. Continent
          Plate
The surface of the Earth has
 many moving parts called
  plates. They are made of
crust and upper mantle rock.
Find the word that fits the clue.
Place in Earth where   A. Magma
the energy of an       B. Fault
earthquake is first    C. Focus
released
                       D. Volcano
           Focus
 When an earthquake occurs,
 the crust shifts and energy is
released. The place energy is
   first released is the focus.
Find the word that fits the clue.
An instrument for   A. Seismograph
measuring the       B. Thermometer
strength of an      C. Vibration
earthquake
                    D. Anemometer
Seismograph

         Charles Richter
      developed the Richter
      scale to measure how
         much energy an
     earthquake releases. A
     seismograph is used to
     measure the strength of
         the earthquake.
Find the word that fits the clue.
One of the seven       A. Plate
large land masses on   B. Pangaea
Earth                  C. Fossil
                       D. Continent
        Continent
Continents are the parts of the
   curst that rise above the
    ocean. We live on the
 continent of North America.
Find the word that fits the clue.
Opening in Earth’s    A. Magma
crust through which   B. Volcano
melted rock reaches   C. Focus
the surface
                      D. Fault
             Volcano


 A volcano is a mountain with a vent.
 The vent goes down into the Earth’s
surface. Hot liquid called magma flows
   up through the vent to the Earth’s
                surface.
Choose the correct phrase to finish
         the sentence.
 The layers of Earth   A. magma, core, crust
 beginning with the    B. Crust, mantle, core
 hottest are           C. Mantle, crust, plate
                       D. Core, mantle, crust
Core, mantle, crust
Choose the correct phrase to finish
         the sentence.
 The force that           A. Flood
 changes Earth’s          B. Erosion
 surface most slowly is   C. Volcano
                          D. Earthquake
       Erosion
Sediments and soil may be
moved by wind, water, and
gravity. This movement is
      called erosion.
Choose the correct phrase to finish
         the sentence.
 Earth’s plates are   A. Convection currents
 always moving           in the mantle
 because of           B. Earthquakes
                      C. Currents in the core
                      D. Earth’s rotation
 Convection currents in the
          mantle

  Heat from the mantle makes the
    plates move. This heat forms
convection currents. The convection
current is the movement of a headed
              substance.
Choose the correct phrase to finish
         the sentence.
 New crust forms      A. Deposition
 where magma rises at B. Continental Drift
 mid-ocean ridges.    C. Subduction
 This is known as
                      D. Ocean-floor
                         Spreading
Ocean-floor spreading
 As magma cools it hardens
 and forms new crust. This
process is called ocean-floor
         spreading.
Choose the correct phrase to finish
         the sentence.
 Examples of      A. Mountains
 landforms are    B. Valleys
                  C. Canyons
                  D. All of the above
         All of the above

Valley




                            Mountain


               Canyon
Choose the correct phrase to finish
         the sentence.
 Subduction occurs   A. A magma chamber
 when                   fills with molten rock
                     B. Fossils are created
                     C. Two plates collide
                        and one slides under
                        the other
                     D. Erosion takes place
Two plates collide and one
  slides under the other
 The light continental crust slides up
 over the heavier oceanic crust. The
 oceanic crust is forced down. It slips
    into the mantle. This is called
            subduction.
Choose the correct phrase to finish
         the sentence.
 The term Ring of Fire   A. The center of an
 refers to                  earthquake
                         B. A seismograph
                            reading
                         C. The crater of a
                            volcano
                         D. An area of volcanic
                            activity around the
                            Pacific Ocean
An area of volcanic activity
around the Pacific Ocean
Choose the correct phrase to finish
         the sentence.
 Weathering is the    A. Wind, waves, water,
 breaking down of        and plants
 rocks into smaller   B. Cast fossils and
 particles by            trace fossils
                      C. Plates rubbing
                         against each other
                      D. Heat and pressure in
                         the Earth
Wind, waves, water, and
        plants
Choose the correct phrase to finish
         the sentence.
 Evidence of an        A. Lava flowing down a
 earthquake includes      mountain
                       B. Buildings falling
                       C. Cracks in Earth’s
                          crust
                       D. Fields buried in ash
Buildings falling and
 cracks in Earth’s
        crust
Choose the correct phrase to finish
         the sentence.
                  A. The Polar Region
 What is the      B. A place where
 Ring of Fire?       tornados occur
                  C. An area of volcano
                     and earthquake
                     activity.
                  D. A area with an
                     unusual amount of
                     wild fires.
An area of volcano and earthquake
              activity.
Good luck on your test!!!!

				
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