Department of Education

Kinalangay Viejo Integrated School

GENERAL DIRECTIONS: Write legibly. Avoid erasures and keep the test paper clean. Use only black
and blue ballpen.

Test 1. MULTIPLE CHOICES: Choose the letter of the correct answer. Write the letter of the correct answer.
1. What do you call the continuum of electromagnetic waves that are arranged according to frequency and
wavelength?
a. Vacuum c. Electromagnetic Field
b. Magnetic field d. Electromagnetic Spectrum
2. What is the frequency of radio waves with wavelength of 20 m?
a. 1.5 X107 Hz b. 20 X107 Hzl c. 5 X107 Hz d. None of the above
3. Which of the following statements is/are true?
I. Electromagnetic waves transfer energy through vacuum
II. Most EM waves are invisible and undetectable
III. Electromagnetic wave is a gradual progression from the waves of lowest frequencies to the
waves of highest frequencies
a. I only b. II and III c. I and III d. III only
4. Which electromagnetic wave carries more energy than the others?
a. microwaves b. radio waves c. UV radiation d. visible light
5. What electromagnetic wave is sometimes called heat rays?
a. gamma rays b. Infrared c. radio waves d. visible light
6. What type of electromagnetic wave is used in texting?
a. Radio b. Microwave d. UV d. Visible light
7. Which of the following is a useful application of IR radiation?
a. Communication c. Night-vision goggles
b. Navigation d. Sterilizing medical apparatus
8. How does a microwave oven cook food?
a. The microwaves penetrate the food.
b. The microwave oven makes fire inside.
c. The microwave frequencies chop the food.
d. All of the above
9. Which of the following electromagnetic waves has the shortest wavelength and the highest frequency?
a. Visible light b. Ultraviolet c. X-ray d. Gamma Ray
10. What is the main source of UV?
a. It is artificially prepared. c. The white light that passes through a prism.
b. The sun. d. The outer space.
11. Which color of the visible light has the highest temperature?
a. Red b. green c. blue d. violet
12. Who discovered the X-ray?
a. James Maxwell b. Wilhelm Roentgen c. William Oersted d. Michael Faraday
13. He formulated the principle behind electromagnetic induction.
a. James Maxwell b. Wilhelm Roentgen c. William Oersted d. Michael Faraday
14. Which electromagnetic wave has the longest wavelength and lowest frequency?
a. Visible light b. Ultraviolet c. X-ray d. Gamma Ray
15. What do you call the phenomenon where light rays bounce off when it hits a surface?
a. dispersion b. Scattering c. reflection d. refraction
16. What is the value of the reflected ray if the angle of incidence is 45o?
a. 40 b. 45 c. 50 d. 90
17. It is an imaginary line that can be drawn perpendicular to the surface of the mirror.
a. incident ray b. reflected ray c. normal line d. none of the above
18. What is the ray of light which leaves the mirror?
a. incident ray b. reflected ray c. normal line d. none of the above
 19. Which of the following is true about the laws of reflection?
a. The reversal effect is the inversion of the image from right to left
b. The normal line, incident ray, and the reflected ray lie on different planes.
c. the angle of incidence is equal to the angle of reflection.
d. all of the above
20. A classification of reflection of light on smooth surfaces is called _______.
a. specular reflection b. Diffused reflection c. irregular reflection d. both b and c
21. Another classification of reflection if light hits rough surfaces is called ______.
a. specular reflection b. Diffused reflection c. irregular reflection d. both b and c
22. It is the basic unit of the nervous system.
a. Nerve cell b. Neuron c. Both a and b d. none of the above
23. This gland is located at the bottom of the neck and secretes a hormone that regulates metabolism, or the release
of energy to the body.
a. Adrenal Gland b. Thyroid Gland c. Pancreas Gland d. Pituitary Gland
24. What body system consists of glands that secrete chemicals to control various body processes?
a. Muscular system b. Endocrine system c. reproductive system d. Nervous system
25. Which of the following is a function of hormones?
a. They influence your mood. c. They help you grow.
b. They help you in time of danger. d. all of the above

Test II. MATCHING TYPE. Match the glands in Column A with its corresponding function in Column B. Match the
functions in Column B with the hormones released in Column C.
COLUMN A COLUMN B COLUMN C
1. Adrenal A. Regulates body metabolism, and Oxytocin
2. Parathyroid causes storage of calcium in bones. Thyroxin
3. Ovaries B. Enables the body to produce certain Parathyromone
4. Thymus antibodies. Estrogen
5. Thyroid C. Controls the calcium levels in your Adrenaline
body, and normalizes bone growth. Insulin
D. prepares the body for action, controls
the heart rate and breathing in times
of emergency.
E. Influence female traits, and support
reproductive function.

Test III. SHORT EXPLANATION. Answer the question comprehensively.

1. Brain, a major part of the nervous system, functions as the main processor of information. Explain how the
nervous system works.

2. The endocrine system is composed of glands that secrete different types of hormones. Explain how the endocrine
system works.