Science

• Alfred Wegener; Continental Drift Theory - states the movements of the plate where the continents lie, that the continents move around on Earth's surface and that they were once joined together as a single supercontinent.
• Boundaries - it is the point where plates meet and that have created the world where we live today.
• Crust - The outermost layer where living things exist 
• Mantle - is the second layer
• Transform - the earth's plate slide past each other in opposite directions
•  Pangaea - one big super continent that existed million of years ago
•  Panthalassa - one single ocean that surrounds the Pangaea.
• Convergent - the plate moves towards each other and when they collide the land is pushed upward and form massive mountains.
• Plate Tectonics - the continuously moving of the plates of the earth with an estimated measurement of 10 cm per year
•  The lithosphere and the asthenosphere - where Plate tectonics happen
• Plate Tectonics Theory - replaced the continental drift theory due to lack of mechanisms on how it works.
• Divergent - two plates move apart. In this process the space between two plates widens and becomes a massive rift.
•  Focus - is the break in the ground caused by the pressure of the moving rocks
• Epicenter -  The ground above the focus
• Seismometer - is used to measure the motion of the ground during an earthquake
• Intensity - refers to the effects of the earthquake as shown in the destruction of buildings, infrastructures, crops, as well as number of casualties.
• Tectonic Earthquake - it is caused by the movement of the Earth's crust or crustal plates. It may occur above the ground or beneath the ocean.
• Volcanic Earthquake - is the shaking of the ground that happens when there is a strong volcanic eruption.
• Earthquake - a phenomenon which involves the shaking of the ground due to the crustal plates movement.
• Charles F. Richter - an American seismologist who developed the Richter Scale which has been used as a basis for measuring the earthquake's magnitude.
• Philippine Institute of Volcanology and Seismology (PHIVOLCS) - is a government agency that is concern with the earthquake and volcanic eruptions in the Philippines.
• Pacific Ring of Fire - It is a 25 000 miles chain of volcanoes and seismically active sites of earthquakes and volcanic eruptions.
• Vent - is where lava flows, pyroclastic materials consisting of volcanic ash, lapilli, or bombs, and fragmented rocks are erupted. Volcanic gases are also emitted here.
• Volcano - is an opening on the Earth's crust where lava, molten rocks and pyroclastic materials are ejected onto the surface during eruptions. - it is also called as the Earth's "chimney".
• Extinct - has not erupted for years and will probable never erupt again
• Explosive Eruption - occurs when gasses in magma are trapped, causing a build up of pressure in the magma chamber, the gasses expand very quickly and erupt violently. It can last for several hours and even for days.
• Active - a volcano that has recently erupted and may erupt again soon. It has a record of eruption within 50 years. It also shows regular activity like earthquake and gas emissions.
• Dormant - Volcanoes that have erupted and then entered a long period of inactivity. They are sometimes called as the "sleeping volcanoes".
• Magma chamber - the location beneath the vent of a volcano where molten rock (magma) is stored prior to eruption. Also known as a magma storage zone or magma reservoir.
• Crater - it is the opening of a volcano.
• Non-Explosive Eruption - lava just flows out of the crater and gaps of the volcano. This kind of eruption happens when there is less pressure in the magma chamber
• Weather pattern - Repeating weather condition over a period of time
• Rotation - The movement of the Earth on its axis
• Revolution - The movement of the Earth around the Sun
• Spring equinox - March 21; the length of the day and night is equal
• Autumnal equinox - September 23; the day and night are again equal of length
• Terrestrial Planets - Mercury, Venus, Earth, and Mars (because like Earth, these planets have a rocky surface)
• Evening Star or Morning Star - a bright planet, especially Venus, when visible in the east before sunrise.
• Earth - Blue Planet
• Mars - Red Planet