Science
Direction: Read and analyze each item carefully and choose the letter of the best answer
A. Gravity
D. Friction
1. Which kind of force opposes motion between two surfaces sticking or touching together?
B. Electric
C. Magnetic
2. Which activities are suited to be performed in a smooth surface or floor?
A. Playing soccer football and baseball
C. Playing tug of war and hide and seek
B. Ballet dancing and roller skating
D. Applying lubricant on it like oil or wax
3. What is always produced when energy is transformed from electrical to mechanical to sound?
D. light
A electricity
C. heat
B. chemical
4. Farther uses following simple machines below in farming and carpentry they are classified as —
Furty Wrench
D. Pulley
Phers
C. Lever
B. Inclined plane
A. Screw
5. A wheel and axle is a simple machine that is made up of a smaller cylinder (the axle) joined to a
larger cylinder (the wheel). Often a wheel and axle is used to make it much easier to move a load
An example of this is a trolley, or any other wheeled vehicle. Why is it useful for an old personipatient
in the hospital to use a wheelchair instead of walking?
1. It saves time and energy
II. It provides comfort on the person with disability
Ill. It makes the person lazy due to lack of exercise
IV. It prevents the person to suffer more pain or injuries
D. All of the above
C. I, II and IV
B. Il and 11
AI and II​