SCIENCE 8

multiplem://The pushback is caused by the inertia of your body that experiences an applied force from the car.|2: It is caused by inertia which states that the body at rest will remain at rest unless an external force is applied.|4: The applied force of the car disturbs the inertia of the body at rest regardless of the mass. The greater the mass of the person, the greater the inertia.|3

The sudden step of the driver on the gas pedal maintains the forces acting on your body.

Both the hammer and the nail receive unbalanced forces exerted byeach other.

multiplem://The direction of the forces is opposite from each other.|2:  Since the external forces act on different objects therefore the magnitude equals tozero.|4:Thehammer and the nails are interacting, and they follow action-reaction withequal magnitude of forces.|3

multiplem:// 39.20 is the resulting product following the formula PE=mgh.|2: 39.20 joules is the stored energy of the object due to the virtue of gravity.|4: 39.20 is the computed product and joule as the unit upon calculating the potential energy.|3

39.20 kgŸm/s² is the potential energy of the 2kg suitcase that is raised in 2m.

The propagation of sound during nighttime is faster.

multiplem://The sound waves refracted downward and travel slowly at night.|3:The sound waves travel faster in daytime compared to nighttime.|2:The sound waves spread widely on the lower areas due to colder temperature.|4

Red has shorter wave length than violet.

multiplem://Red has lower frequency than violet.|2: Red has lower frequency therefore it has lower energy.|4:Red has lower energy but with longer wavelength as compared to violet.|3

multiplem://It has a resulting obtuse angle on the surface after the movement.|2:The hanging wall slides down relative to the footwall due to the sudden release of energy.|4: It is considered  normal fault wherein one side of the fault moves downward with respect to the other side.|3

The illustration shows the compressional type of stress that occurred in the inner layers of the earth.

multiplem:// Heavy objects and furniture overturn and topple.|2: Most people are frightened due to the strong vibrations of the ground.|4: Many people feel dizzy and may find it difficult to stand on the upper floors.|3 

Buildings may collapse due to strong intensity of the earthquake.  

multiplem://The classification of tropical cyclones depends on its sustained wind speed.|2:To be able to develop as a tropical cyclone, it must sustain the wind speed and requires a continuous flow of warm moist air.|3: If warm moist air flows into a preexisting atmospheric disturbance, further development occurs, and it will be classified as the next category which is more destructive.|4

When winds sustain its speed up to 61 kilometers per hour, it causes heavy rainfall in the inland and classifies it as typhoon.

multiplem://The typhoon Ompong enters the Philippine Area of Responsibility on September 13, 2018 at 8AM.|2:On September 16, 2018 typhoon Ompong is already outside the PAR because it is located 19.8°N, 115.7°E.|3:Typhoon Ompong enters the PAR at 8 AM on September 13, 2018, stays for three days, and moves in westward direction.|3

The typhoon Ompong lasts from September 13 to 15, 2018 but did not affect much the country because it traversed the uppermost part of Luzon.

multiplem://They come in varied sizes, shapes, and compositions.|1: They vary in size and the meteoroids are the smallest.|2:They are not usually seen in the sky because they do not follow a specific orbit.|3

They have the same chemical composition because comets and meteoroids are remnants of asteroids.

Same as solid, liquid has very strong interparticle forces of attraction.

multiplem://Solid has very strong interparticle forces of attraction.|1: Gas has very weak interparticle forces of attraction thus it can be compressed.|3: Among the three states of matter, solid has compact particles with very strong forces of attraction.|2

The resulting liquid is considered as a pure substance.

multiplem://It is a mixture of salt as solute and water as solvent.|1: The resulting liquid is a compound due to the mixture of NaCl andH₂O.|2:It is a homogeneous mixture because its composition is even all throughout and distributed uniformly.|3

multiplem://Melting process takes place when solid turns into liquid.|2: Physical change occurs to solid when its particles absorb heat.|3:  Asthe melting process takes place, the inter molecular spaces become greater thus the forces of attraction between the particles become weaker.

Liquid particles show greater intermolecular energy than solid.

When the water vapor reaches the upper part of the troposphere, it forms water droplets forming rain.

multiplem://Water from the surface of the ocean evaporates due to increase in temperature.|2: If the air is saturated and the radiated heat is enough, it precipitates forming water droplets and falls on the ground as rain.|4: Water from different bodies changes into vapor, condenses to form clouds and precipitate back to the earth surface in the form of rain.|3

Adding sugar and milk to hot water.

multiplem://Rusting of iron due to exposure to oxygen.|3: Adding calamansi juice to evaporated milk.|1:Ripening of fruit results in a sweet taste and change in color.|2