Essay about water pollution




do somethings easy first.

Animal cell has no cell wall but plant cell have cell wall.


in science 10 unit 1 module 1 activity 1, the title of the activity is "finding the center". the location of the hypothetical earthquake with the given data presented in the activity is in cebu city. we can find the earthquake epicenter using triangulation method. step 1, obtain record from the three seismic recording station. step 2, determine the time difference in the arrival time of p-wave and s-wave. step 3, compute for the distance of the epicenter from each seismological station using the formula d= td/ 8 seconds × 100. step 4, use triangulation method to find the earthquake epicenter.

solving for distance (d = td/8 s × 100)


                d = 44.8 s / 8 s × 100 = 560 km

puerto princesa

                d = 32 s / 8 s × 100 = 400 km


                d = 38.4 s / 8 s × 100 = 480 km

recording station     time difference (s)     distance from station in (km)

batangas                     44.8 seconds                       560   km

puerto princesa         32 seconds                           400   km

davao                           38.4 seconds                         480 km      

location of the epicenter using triangulation method is cebu city.

earthquake epicenter

is the area on the surface of the earth which is directly above the focus in which the origin of earthquake occur. focus is the origin of slippage that produces earthquake, directly above on it is the epicenter. since the focus is under the crust and we cannot see it on the surface, we put a reference on it on the surface for us know that earthquake occurs in this area and we called it as epicenter


slippage along the fault or the plate boundary, releases tremendous amount of energy which causes vibration on the surface of the earth which is commonly known as earthquake.

types of earthquake

tectonic earthquake

volcanic earthquake

tectonic earthquake

tectonic earthquake is the result of the movement of the plate which produces tremendous amount of energy that travels in all direction away from the epicenter causing shaking on the surface.

volcanic earthquake

volcanic earthquake occurs due to the volcanic activity of erupting volcanoes. volcanic activity due to the rising of magma on the surface of the earth causes shaking in surrounding areas known as volcanic earthquake.

to know more about volcanic earthquake and tectonic earthquake, you can visit the link:

types of seismic waves produce during earthquake

body wave

surface wave

body waves can travel in the interior of the earth known as primary wave and secondary wave. primary wave is the fastest to travel and it can travel in both solid and liquid medium. secondary wave travel's slower than primary wave and it can only travel in solid not in liquid. the information provided by body waves gives ideas on what made up the inner layer of the earth.

surface wave on the other hand is composed of love wave and rayleigh wave. love wave is faster than rayleigh wave but, it causes majority of the damage on the surface of the earthquake. love wave moves the ground in a side to side horizontal motion, like that of a snake's causing the ground to twist which is the main reason why it causes more damage compared to the rest of the waves released during earthquake. on the other hand, rayleigh wave rolls along the ground just like a wave rolls across the ocean.

to know more about seismic wave released during earthquake, you can visit the link:

studying earthquake's epicenter is one of the basis of the scientist in dividing the earth's lithosphere into several segments called plates. majority of the earthquake occur the plate boundary.

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i duuno if this is correct cause i don't speak malayalam but i did my


വിട്രോയിൽ (അർത്ഥം: ഗ്ലാസിൽ) പഠനങ്ങൾ സൂക്ഷ്മജീവികൾ, കോശങ്ങൾ അല്ലെങ്കിൽ ജൈവ തന്മാത്രകൾ ഉപയോഗിച്ച് അവയുടെ സാധാരണ ജീവശാസ്ത്രപരമായ സന്ദർഭത്തിന് പുറത്താണ് നടത്തുന്നത്. "ടെസ്റ്റ്-ട്യൂബ് പരീക്ഷണങ്ങൾ" എന്ന് പൊതുവായി വിളിക്കപ്പെടുന്ന ഈ പഠനങ്ങൾ പരമ്പരാഗതമായി ടെസ്റ്റ് ട്യൂബുകൾ, ഫ്ലാസ്ക്കുകൾ, പെട്രി വിഭവങ്ങൾ, മൈക്രോടൈറ്റർ പ്ലേറ്റുകൾ എന്നിവ പോലുള്ള ലാബ്‌വെയറുകളിൽ പരമ്പരാഗതമായി നടക്കുന്നു.

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