WEEK 1- 3
When does an object considered to be in motion?
I. When its position changes with respect to a point of reference.
II. When its distance changes with respect to a point of reference.
III When its direction changes with respect to a point of reference.
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
D. I, II and III
8. In a transverse waves, the individual particles of a medium moves____________
A. in circular path
C. parallel to the direction of travel
B. in elliptical path
D. perpendicular to the direction of travel
D. perpendicular to the direction of travel
14. A satellite explodes in the outer space and can be seen quickly from a spaceship in lunar orbit but the explosion cannot be heard, because_____________
A. Light travels faster than sound
B. There is no air in the outer space
C. The light is reflected around the moon.
D. Sound waves don’t travel in straight line.
B. There is no air in the outer space
19. Plastic, wood and rubber are used as handles of metals because ___________.
A. They absorb heat
B. They are insulator
C. They are best materials for making handles
D. None of them
B. They are insulator
24. Which of the following can be attracted by a positively charged objects?
A. a neutral object
B. any other object
C. another positively charged objects
D. none of the above
C. another positively charged objects
2. How do you compute for the average speed of each athlete?
A. Divide 200 meters by recorded time of travel.
B. Divide the recorded time of travel by 200 meters.
C. Multiply 200 meters by the recorded time of travel.
D. Divide 200 meters by twice the recorded time of travel.
A. Divide 200 meters by recorded time of travel.
10. Compared to a thin string of the same length and tightness, a thick string produces sound of_____
A. higher pitch
B. lower pitch
C. lower then higher pitch.
D. the same pitch
B. lower pitch
15. Which of the following is a proof that light travels in a straight line?
A. formation of clouds
B. formation of color
C. formation of rainbows
D. formation of shadows
A. formation of clouds
20. How does heat travel to pan?
A. by conduction
B. by convection
C. by dispersion
D. by radiation
A. by conduction
25. What will happen when two like charges are brought together? They will __________.
A. attract each other
B. have no effect on each other.
C. neutralize each other
D. repel each other
A. attract each other
3. Which of the following is true about an object that travels 5 meters to the left then 2 meters up and then another 5 meters to the right?
A. The displacement of the object is equal to 12 meters.
B. The displacement of the object is equal to 12 meters down.
C. The total distance travelled by the object is equal to 12 meters.
D. The total distance travelled by the object is equal to 12 meters
down.
C. The total distance travelled by the object is equal to 12 meters.
11. Which of the following is NOT capable of transmitting sound?
A. air
B. ice
C. seawater
D. vacuum
D. vacuum
16. Radio waves and gamma rays are parts of the electromagnetic spectrum. Which of the following is TRUE about the energy carried by these waves?
A. All electromagnetic waves carry the same energy
B. Radio waves carry the lowest energy since it has the lowest frequency.
C. Gamma rays carry the lowest energy since it has the lowest frequency.
D. Radio waves carry the highest energy since it has the highest frequency
B. Radio waves carry the lowest energy since it has the lowest frequency.
21. Inside an air conditioned room, metallic objects generally feel cooler to touch than wooden objects. Why is that so?
A. Heat tends to flow from metal to wood.
B. Metal heats up and cools down faster than wood.
C. Wood contains more heat than a metal of the same mass.
D. The human body resembles wood more closely than it resembles
B. Metal heats up and cools down faster than wood.
TRUE OR FALSE
Grams is a unit for distance.
FALSE
5. The distance between two consecutive crests or trough of a wave is_________________.
A. amplitude
B. crest
C. trough
D. wavelength
D. wavelength
12. Which of the following would most likely transmit sound best?
A. air in your classroom
B. steel
C. water
D. water in a swimming pool
A. air in your classroom
17. Among all the electromagnetic waves(EM) which has the highest frequency?
A. Infrared
B. gamma rays
C. radio waves
D. ultraviolet light
C. radio waves
22. In what direction does the heat travel through the soup?
A. from top to bottom
B. from bottom to top
C. both A and B
D. neither A or B
B. from bottom to top
TRUE OR FALSE
The displacement is zero when an object’s initial and final position is the same.
TRUE
6. The disturbance in space that requires a medium to propagate.
A. sinusoidal waves
B. mechanical waves
C. electromagnetic waves
D. transverse waves
C. electromagnetic waves
13. The speed of sound is different in air, steel and water. Which of the following give the correct order of speed of sound from slowest to fastest?
A. air, steel, water
B. air, water, steel
C. steel, air, water
D. steel, water, air
B. air, water, steel
18. Which of the following is TRUE about the speed in a vacuum of these colors of light?
A. All colors of light have equal speed in a vacuum.
B. All colors of light have varying speed in a vacuum.
C. Red light has the highest speed while violet light has the lowest speed.
D. Violet light has the highest speed while the red light has the lowest speed.
A. All colors of light have equal speed in a vacuum.
23. Two unlike charges ___________.
A. attract each other
B. have no effect on each other.
C. neutralize each other
D. repel each other
D. repel each other
TRUE OR FALSE
Transverse mechanical waves are waves that travel parallel to an applied force.
FALSE