SCIENCE
Directions: Read and understand the questions. Write your answer on the answer sheet.
1.It is defined as a push or pull that starts, stops or changes the direction of a moving object.
A.
Effort
B. Force
C. Machine
D. Work
2. It is a force that opposes motion between two surfaces sticking or touching together.
A. Energy
B. Friction
C. Gravity
D. Magnet
3. The ________ makes all objects fall toward the center of Earth.
A.
Electricity B. Friction
C. Gravity
D. Sun
4. Which has the greatest friction?
A. Rough floor
B. Smooth floor
C. Tiled floor
D. Wet floor
5. What force does the brakes on a car produce to stop moving?
A. Friction
B. Gravity
C. Magnet
D. Weight
6. Which of the following statements best describes friction?
A. It is a force that occurs when surfaces touch each other.
B. It is a force that occurs between solids and liquids.
C. It is a force that occurs only on rough surfaces.
D. It is a force that occurs in smooth surfaces.
7. Why is it difficult for us to go up in a mountain than go down?
A. We are moving towards gravity.
B. We are moving against gravity.
C. We are pulled by the wind.
D. None of the above
8. Which is an example of an object that can produce rolling friction when rolls over a surface?
A. Ball
B. Cabinet
C. Shoe box
D. Table
9. Riding a bicycle and using of wheelbarrow (kariton) are examples of.
A. Fluid friction
C. Sliding friction
B. Rolling friction
D. Static friction
10. Which of the following shows an example of rolling friction?
A. A kite flying.
B. A paper boat floating.
C. A picture frame on the table.
D. A soccer ball rolling on the ground.
11. It is produced from a vibrating body that travel through the air or another medium as an
audible mechanical wave.
A. Force
B. Heat
C. Radio
D. Sound
12. It is a form of energy that travels in a straight line.
A. Heat
B. Light
C. Sound
D. Wind
13. The form of energy due to the movements of the molecules.
A. Heat energy
C. Mechanical Energy
B. Nuclear Energy
D. Sound Energy
14. What energy is produced by vibrating objects?
A. Light energy
C. Sound energy
B. Mechanical energy
D. Thermal Energy
15. A dry cell is useless unless it is changed to
A. Chemical energy
C. Nuclear Energy
B. Electrical energy
D. Potential Energy
16. What kind of energy is involved when ice melts ?
A. Chemical energy
C. Light energy
B. Heat energy
D. Nuclear Energy
17. What energy is used in different industries and at home that makes appliances work?
A. Chemical energy
C. Mechanical energy
B. Electrical energy
D. Nuclear energy
18. What energy changes are shown when you turn on the flashlight?
A. Chemical to light
C. Light to chemical
B. Electrical to heat
D. Sound to Light
19. What kind of energy does bread possess?
A. Chemical
B. Kinetic
C. Mechanical
D. Solar
20. The transfer of energy from one form to another is called ______________
A. Law of Transfer
B. Thermal Transfer
C. Energy Transformation
D. Law of Conservation of Energy
21. Which is NOT one of the uses of radiant energy?
A. It is used in medicine.
B. It is used for making food.
C. It is used in transportation.
D. It is used for drying and heating.
22. What energy can be transferred through conduction, convection, or radiation?
A. Electrical energy
C. Nuclear energy
B. Heat energy
D. Sound energy
23. These are simple tools that multiply the force to make work faster and easier.
A. Compound machines
C. Simple gadgets
B. Electric Machines
D. Simple machines
24. Tools that consist of two or more simple machines are called__________.
A. Compound machines
C. Latest machines
B. Electronic machines
D. Simple machines
25. It is a simple machine that has tilted surface that lessens the effort exerted in transporting
weight over a distance and height.
A. Inclined plane
B. Pulley
C. Screw
D. Wheel and axle
26. A simple machine consisting of a rigid bar pivoted at a fixed henge or fulcrum is called
________.
A.
Lever
B. Pulley
C. Screw
D. Wedge
27. The _________ is a double inclined plane that is sharpened to an end.
A. Lever
B. Pulley
C. Screw
D. Wedge
28. Which of the following is not a simple machine?
A. Pulley
B. Sewing machines
C. Screw
D. Pulley
29. It is a form of inclined plane that is wrapped around a central shaft.
A. Lever
B. Pulley
C. Screw
D. Wheel and axle
30.It is a modified wheel and axle that carries a flexible rope, cord, cable, chain or belt on its rim.
A. Lever
B. Pulley
C. Screw
D. Wedge
31. What simple machine has the same appearance with a pulley, but it has a wheel that is fixed
to the axle.
A. Inclined plane
B. Lever
C. Pulley
D. Wheel and axle
32. Why can machines make our work easier and faster?
A. Machines resists force.
B. Machines can stand wear and tear.
C. Machines conquers great force with less effort.
D. All of the above
33. Which machine would help a construction worker lift a heavy steel bar to the top of the
building?
A. Fixed Pulley
B. Inclined plane
C. Lever
D. Wedge
34. Which simple machine is double inclined plane used for cutting wood?
A. axe
B. Lever
C. Pulley
D. Wedge
35. Mark opened a can of biscuit with a spoon. What kind of simple machine is the spoon?.
A. Inclined plane
B. Lever
C. Screw
D. Wedge
36. Mr. Cruz bought a horse. How could he make the horse go up to the truck?
A. use a lever
C. use a wedge
B. use a pulley
D. use an inclined plane
37. What simple machines can you identify in a wheelbarrow?
A. Wedge and inclined plane
C. Lever and Wedge
B. Screw and pulley
D. Wheel and axle and lever
38. What kind of simple machine is a scissors?
A. Lever and pulley
C. Pulley and wedge
B. Lever and screw
D. Wedge and lever
39. What simple machine has been believed to be use in structuring ancient structures with heavy
stones?
A. Inclined plane
C. Wedge
B. Lever
D. Wheel and axle
40. Identify what kind of simple machine is in the given picture?
A. Wheel and axle
B. Lever
C. Wedge
D. Inclined Plane