Earth Movements

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Earth Movements

• 3rd Grade Review

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Find the word that fits the clue.

• A crack in Earths crust

• Continent
• Plate
• Fault
• Magma

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Fault
Most fault lines are deep in the crust, but some
like the San Andreas fault can be seen on the
surface.
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Find the word that fits the clue.

• Hot, flowing rock below Earths surface

• Vibration
• Plate
• Magma
• Fossil

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Magma

• The crust and mantle have areas of molten rock
  called magma. When a volcano erupts, magma comes
  to Earths surface.

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Find the word that fits the clue.

• Huge land mass that may have existed 200 million
  years ago

• A. Pangaea
• Volcano
• Continent
• Plate

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Pangaea

• Long ago, Earth had just one huge continent
  called Pangaea.

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Find the word that fits the clue.

• Rapid back and forth movement

• Seismograph
• Focus
• Plate
• Vibration

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Vibration

• The energy given off in an earthquake sets off
  vibrations.

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Find the word that fits the clue.

• Remains of an organism that lived long ago
  preserved in rock

• Focus
• Fossil
• Fault
• Lava

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Fossil

• Fossils of tropical plants have been found on an
  island in the cold Arctic.

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Find the word that fits the clue.

• A sheet of crust and upper mantle that covers
  Earths surface

• Plate
• Pangaea
• Fault
• Continent

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Plate

• The surface of the Earth has many moving parts
  called plates. They are made of crust and upper
  mantle rock.

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Find the word that fits the clue.

• Place in Earth where the energy of an earthquake
  is first released

• Magma
• Fault
• Focus
• Volcano

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Focus

• When an earthquake occurs, the crust shifts and
  energy is released. The place energy is first
  released is the focus.

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Find the word that fits the clue.

• An instrument for measuring the strength of an
  earthquake

• Seismograph
• Thermometer
• Vibration
• Anemometer

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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.

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Find the word that fits the clue.

• One of the seven large land masses on Earth

• Plate
• Pangaea
• Fossil
• Continent

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Continent

• Continents are the parts of the curst that rise
  above the ocean. We live on the continent of
  North America.

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Find the word that fits the clue.

• Opening in Earths crust through which melted
  rock reaches the surface

• Magma
• Volcano
• Focus
• Fault

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Volcano

• A volcano is a mountain with a vent. The vent
  goes down into the Earths surface. Hot liquid
  called magma flows up through the vent to the
  Earths surface.

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Choose the correct phrase to finish the sentence.

• The layers of Earth beginning with the hottest are

• magma, core, crust
• Crust, mantle, core
• Mantle, crust, plate
• Core, mantle, crust

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Core, mantle, crust
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Choose the correct phrase to finish the sentence.

• The force that changes Earths surface most
  slowly is

• Flood
• Erosion
• Volcano
• Earthquake

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Erosion

• Sediments and soil may be moved by wind, water,
  and gravity. This movement is called erosion.

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Choose the correct phrase to finish the sentence.

• Earths plates are always moving because of

• Convection currents in the mantle
• Earthquakes
• Currents in the core
• Earths rotation

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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.

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Choose the correct phrase to finish the sentence.

• New crust forms where magma rises at mid-ocean
  ridges. This is known as

• Deposition
• Continental Drift
• Subduction
• Ocean-floor Spreading

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Ocean-floor spreading

• As magma cools it hardens and forms new crust.
  This process is called ocean-floor spreading.

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Choose the correct phrase to finish the sentence.

• Examples of landforms are

• Mountains
• Valleys
• Canyons
• All of the above

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All of the above
Valley
Mountain
Canyon
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Choose the correct phrase to finish the sentence.

• Subduction occurs when

• A magma chamber fills with molten rock
• Fossils are created
• Two plates collide and one slides under the other
• Erosion takes place

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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.

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Choose the correct phrase to finish the sentence.

• The term Ring of Fire refers to

• The center of an earthquake
• A seismograph reading
• The crater of a volcano
• An area of volcanic activity around the Pacific
  Ocean

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An area of volcanic activity around the Pacific
Ocean
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Choose the correct phrase to finish the sentence.

• Weathering is the breaking down of rocks into
  smaller particles by

• Wind, waves, water, and plants
• Cast fossils and trace fossils
• Plates rubbing against each other
• Heat and pressure in the Earth

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Wind, waves, water, and plants
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Choose the correct phrase to finish the sentence.

• Evidence of an earthquake includes

• Lava flowing down a mountain
• Buildings falling
• Cracks in Earths crust
• Fields buried in ash

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Buildings falling and cracks in Earths crust
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Choose the correct phrase to finish the sentence.

• What is the Ring of Fire?

• The Polar Region
• A place where tornados occur
• An area of volcano and earthquake activity.
• A area with an unusual amount of wild fires.

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An area of volcano and earthquake activity.
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Good luck on your test!!!!