# Electromagnetic Radiation and Infrared Waves

Topics: Electromagnetic radiation, Electromagnetic spectrum, Wavelength Pages: 5 (815 words) Published: December 25, 2013
﻿Republic of the Philippines
DEPARTMENT OF EDUCATION
REGION IV-A CALABARZON
Division of Batangas City
Batangas City

Third Periodical Test in SCIENCE I

I. MULTIPLE CHOICE:
Choose the letter of the best answer.

1. Mechanical waves transport energy from one place to another through ___.
a. Alternately vibrating particles of the medium
b. Particles travelling with a wave
c. Vibrating particles and travelling particles
d. None of the above

2. In a transverse wave, the individual particles of the medium ____.
a. Move in circlesc. Move parallel to the direction of the travel
b. Move in ellipsesd. Move perpendicular to the direction of the travel

3. The higher the frequency of wave, ___.
a. The lower its speedc. Greater its amplitude
b. The shorter its wavelengthd. The longer its period

4. Energy from the sun reaches the earth through ___.
a. Ultraviolet wavesc. Mechanical waves
b. Infrared wavesd. Electromagnetic waves

5. Which of the following objects will produce sound?
a. Soft objectc. Vibrating object
b. Radio stationd. Object under pressure

6. Which of the following best describe a high frequency sound?
a. Low pitchc. Low energy
b. High pitchd. A and C

7. Compared to a thin string of the same length and tightness, a thick string produces sounds of ___.
a. The same pitchc. Higher pitch
b. Lower pitchd. Lower then higher pitch

8. A sound wave is a ___.

a. Longitudinal wavec. Standing wave
b. Transverse waved. Shock wave
9. Which of the following would most likely transmit sound best?

a. Steel in cabinetc. Air in your classroom
b. Water in the oceand. Water in swimming pool

10. Which of the following is NOT an electromagnetic wave?
a. Infraredc. Sound

11. In terms of wavelength, which of the following best compare infrared waves from ultraviolet waves?
a. Infrared waves have longer wavelength
b. Infrared waves have shorter wavelength
c. IR waves have the same wavelength as the UV waves
d. IR waves is not comparable in wavelength with the UV wave

12. Among all the electromagnetic waves, which has the highest frequency?

13. ROYGBIV is the basic component of white light, which of the following has the highest frequency?
a. Bluec. Orange
b. Greend. Red

14. Which of the following is true about an object that travels 5 meters to the left, 2 meters up, then 5 meters to the right?
a. The displacement of the object is equal to 12 meters
b. the total distance travelled by the object is equal to 12 meters
c. The displacement of the object is equal to 12 meters down.
d. The total distance travelled by the object is equal top meters down

15. Which of the following graphs show that the object’s motion is accelerating?
a. c.

b. d.

16-19 The illustration on the right shows a lady
making a noodle soup using a pan made of metal.
Use this in answering the following questions.

16. How does the heat travel from the stove to the pan?
b. convectiond. conduction

17. How does heat travel through the soup?
b. convectiond. conduction

18. In what direction does the heat travel through the soup?
a. from top to bottomc. both A and B
b. from bottom to topd. neither A nor B

19. Which of the following explains why a lady is able to hold the handle of the pan with her bare hands?
a. The handle is made of good insulator of heat
b. The handle has high conductivity
c. The handle has high thermal expansion

II. Identification:
Identify the word or phrase being described.

______1. Ability of the materials to conduct heat.
______2. It is mostly good conductor of heat.
______3. Waves that occur when the individual particles of a medium vibrate from...