Science Q4

Cards (69)

  • Earthquake - A sudden shaking of the ground caused by the sudden release of energy
  • The Earth has 12 tectonic plates
  • Tectonic Plates are the reason why we have earthquakes, tsunamis, etc
  • Epicenter - is the point in the surface of the Earth locate directly above the center of an earthquakes origin
  • Hypocenter/Focus - Is the point on the earth's crust where an earthquake begins
  • Magnitude - How big or small the earthquake was
  • Tectonic Earthquake - Occurs when the plates move against each other.
  • Seismograph - A device that measures seismic waves from earthquakes
  • Volcanic Earthquake - Occur when magma moves beneath the ground
  • Artificial Earthquake - Caused by human activity such as mining, drilling, blasting, construction, etc.
  • Ring of Fire or Circum-Pacific Belt - the worlds destructive seismic events of earthquakes and 75% of the Earth seismic energy are produced in this Region
  • Intensity - Measurement of how strongly an earthquake is felt at different locations
  • PHIVOLCS - Philippine Institute of Volcanology and Seismology
  • Richter Magnitude Scale - used to describe the strength of an Earthquake based on the height of the wave measured in the seismograph
  • Modified Mercalli Scale - measures the shaking (intensity) of an earthquake
  • the Modified Mercalli Scale was invented by an Italian Scientist, Giuseppe Mercalli, in 1902
  • Volcano - A mountain shaped crater that is formed when magma rises through the Earth's crust.
  • crater - the opening of a volcano
  • volcanic vent - the place at the Earths surface where lava flows; pyroplastic materials and fragmented rocks are erupted
  • Pyroplastic Materials - these consists of lava, ashes, volcanic gases and rocks
  • explosive volcano - a volcano that erupts explosively and produces a large amount of ash and gas
  • non-explosive volcano eruption - lava just flows out of the crater and gaps pf the volcano.
  • active volcano - a volcano that is currently erupting or has recently erupted
  • dormant volcano - a volcano that has not erupted in a long time, it's also called "Sleeping Volcano"
  • extinct volcano - a volcano that has been erupted and is no longer active
  • seasons - is a subdivision of the year, marked by changes in the weather, ecology, and hours of daylight
  • wet season
    • takes place from June-Nov
    • bring flood, frequent rainfall
    • Hanging Habagat (South-West Moonsoon)
    • warm and moist air
    • heavier and stronger typhoon
  • Weather - condition of the atmosphere over a short period of time
  • Climate - weather pattern over a long period of time
  • preciption - is the highest in the area where the south west moonsoon strikes
  • South West Moonsoon (Hanging Habagat) - warm moist winds from the southwest causing rains over the western portion of the country from June to November
  • Northwest Moonsoon (Amihan) - cold winds from the Northeast that bring rains over the eastern side of the country
  • Dry Season
    • takes place during Dec-May
    • infrequent rainfall, dusty soil
    • insufficient water supply
    • Hanging Amihan (Northeast Moonsoon)
    • cool and dry air
  • Earths Rotation - the movement of the Earth on its axis
  • The period of one complete rotation is defined as a day and takes 23 hours, 56 minutes, and 1.2 seconds
  • Earths Revolution - is the movement of the Earth around the Sun
  • The Earth revolves around the Sun in a Counter-Clockwise direction
  • it takes the Earth a year or 365 and 1/4 days to revolve around the Sun
  • to keep the calendar in sync with the revolution of the Earth, a leap year is used in every four years; a leap year is a year with 366 days. February 29 is added on the calendar
  • the Earth is an ellipse or an elliptical shape