Revewer in Science PT

• Earthquake


  Trembling of the Earth's surface
• Effects of Earthquake


  • Great damage to buildings, bridges, roads, and other structures
  • Landslide
  • Mudslide
  • Liquefaction
  • Tsunamis
  • Formation of new rocks
• Several buildings and houses will collapse when a strong and successive earthquake occurs
• You should not run to the elevator when an earthquake occurs
• What to do during an earthquake

  Duck, cover and hold
• Emergency plan and emergency kit should be prepared BEFORE Earthquake
• Be ready for aftershocks; check yourself and others for injuries AFTER an Earthquake
• Volcano


  An opening in the earth's crust through which lava, volcanic ash, and gases escape
• Magma


  Molten rock beneath Earth's surface
• Vent


  An opening in Earth's surface through which volcanic materials escape
• Crater


  Mouth of a volcano - surrounds a volcanic vent
• Lava


  Molten rock that erupts from a volcano that solidifies as it cools
• Effects and changes of volcanic eruption on earth's surface


  • Build-up of land around a volcano
  • Change the landscape and shape of mountain
  • Ashfall
  • Lahar
  • Formation of fertile soil
• Volcanic eruptions will destroy agricultural lands and vegetation
• Volcanic eruptions can lead to destruction of landforms, infrastructures and loss of lives
• Emergency plan and emergency kit should be prepared BEFORE volcanic eruption
• Stay indoors until authorities say it is safe to go outside AFTER volcanic eruption
• Weather


  The condition of the atmosphere of a particular place in a short period of time
• Weather changes from time to time. The weather today maybe different from that of tomorrow
• Changes in the temperature and humidity affect the other elements and cause changes in weather
• Weather data


  Information or numbers about the state of the atmosphere including temperature, wind speed, rain, humidity, and pressure
• Manila Philippines Average Monthly Rainfall


  • Blue lines represent the amount of rainfall/precipitation in each month per mm
  • Yellow lines represent the amount of temperature in each month
• The Philippines has two seasons as it is located in the tropical region of the earth
• The two seasons


  • Wet
  • Dry
• Dry season


  Characterized by a very hot temperature, and trade winds prevail from January to May
• Wet season


  Characterized by heavy rainfall and thunderstorm throughout the country from June to December
• Rotation


  The movement of the earth on its own axis

  
• The Earth rotates from west to east. The direction of its movement is counterclockwise

  
• Axis


  An imaginary or invisible line around which an object rotates or spins
• Earth's rotation may result to the occurrence of day and night

  
• The period of one complete rotation is a "DAY" and takes 23 hours, 56 minutes, and 4.2 seconds or 24 HOURS

  
• Earth's rotation is "TILTED" or "INCLINED" 23.5 degree relative to its plane of revolution around the sun

  
• Revolution


  The movement of an object around bigger object. Earth revolves around the sun
• Earth's orbit around the sun is in the form of a slightly flattened circle called ELLIPSE

  
• Earth is closest to the sun at 147 million kilometers when it is in its orbit's perihelion

  
• Earth is farthest from the sun at 152 million kilometers when it is in its orbit's aphelion

  
• One complete revolution of earth is 365.24 solar days or 365 days, 5 hours, 48 minutes, and 46 seconds (365 ¼ days)
• 366 days when it is Leap year
• The result from Earth's revolution is the "Occurrence of Seasonal Changes"
• Seasons


  • Winter
  • Summer
  • Spring
  • Autumn or Fall