3. What energy is being transformed when the man struck his fingers across the strings of a harp?
A Mechanical + Sound
B. Mechanical
Heat
+ Sound
C. Electrical
Sound
D. Electrical
Sound
4. You switch on a lamp in your room. Which sequence of energy transformations takes place?
A Heat electrical
light
B. Electrical
heat
C. Electrical *heat
D Light
heat
→ electrical
5. When a radio is turned on what energy transformation occurs?
A Heat energy is change to light energy.
8. Kinetic energy is change to sound energy.
C. Electrical energy is change to sound energy.
D. Chemical energy is change to mechanical energy.
6. Harp became famous all over Ireland because it is commonly found in many homes. Which of
the following DOES NOT describe a harp?
A. It has an upright frame.
B. It is a stringed instrument.
C. It is the biggest member of the stringed family.
D. It is played by plucking the string using the fingers.
7. Exposing yourself to noise pollution like unpleasant sound of rock concert, vehicles, factories.
construction works and many others can harm your health. The following are the effects of
noise pollution EXCEPT ONE.
A Blood pressure is too high.
B. It is pleasant to one's ear.
C. It reduces the ability to hear sounds.
D. Pain is arising from the head or upper neck of the body.
8. Harp is the only plucked-string instrument to be a regular member of the orchestra. This
instrument needs innovation and enhancement to improve the durability, quality, and
marketability. Why do you think fillers is commonly used in finishing products?
A. It will make more attractive.
B. It is used to beautify the object.
C.It is used to fill up cracks and grooves.
D. It is used in colouring a material or object.
9. Policies are definite causes of action adopted for the sake of expedient facility. The following are
the policies on sustainable development in constructing a project plan EXCEPT ONE. What is it?
A. Choose the simple project.
B. Master the procedure of the project.
C. Choose a project in which the materials are found in the locality,
D. Plan first the expensive materials to be used to earn more.
For number 10-12. Read and analyze each item. Then, solve and write your answers on the blank.
10. Andrea paid the cashier P 648 for the 2 blouses. Let b be the price of each blouse. How much did
each blouse cost?
11. Lorna bought 4 kilograms of mango for her mango float ice cream at n price. What is the
algebraic expression for this situation?
12. What is the value of x-10-227​