Question 1

What happens to the acceleration when an object is moving with uniform velocity?

Accepted Answer

zero

Answer

negative

Answer

uncertain

Answer

uniform

Question 2

How is the speed related to the distance travelled when a vehicle travels at constant time?

Accepted Answer

The greater the distance travelled, the greater the speed of travel.

Answer

The shorter the distance travelled, the greater the speed of travel.

Answer

The greater the distance travelled, the lower the speed of travel.

Answer

The speed of travel does not affect the distance covered.

Question 3

Which of the following is TRUE about an object that travels 5 meters to the left, then 2 meters up, then another 5 meters to the right?

Accepted Answer

The total distance travelled by the object is equal to 12 meters.

Answer

The displacement of the object is equal to 12 meters down.

Answer

The displacement of the object is equal to 12 meters.

Answer

The total distance travelled by the object is equal to 12 meters down.

Question 4

You walked from your house to the main gate 3 m/s North. Which of the following quantities is used to describe your motion?

Accepted Answer

velocity

Answer

acceleration

Answer

displacement

Answer

speed

Question 5

The Philippine Eagle accelerates from 26 m/s to 47 m/s in 7 seconds. What is the eagle’s average acceleration?

Accepted Answer

3 m/s2

Answer

4 m/s2

Answer

2 m/s2

Answer

5 m/s2

Question 6

What is the speed of the object from 20s to 40s of its travel time?

Accepted Answer

10 m/s

Answer

15 m/s

Answer

20 m/s

Answer

5m/s

Question 7

What is the acceleration of the object from 40s to 60s of its travel time?

Accepted Answer

0.4 m/s2

Answer

3 m/s2

Answer

2 m/s2

Answer

1 m/s2

Question 8

What can be inferred about the motion of the object in position A?

Accepted Answer

The object is moving in a constant speed.

Answer

The object is decelerating.

Answer

The object is accelerating.

Answer

The object is not moving.

Question 9

Which of the following describes the object from 40s to 80s of its travel time?

Accepted Answer

The object is accelerating.

Answer

The object is moving in a constant speed.

Answer

The object is not moving.

Answer

The object is decelerating.

Question 10

Which part of the motion graph indicates that the object is decelerating?

Accepted Answer

D

Answer

C

Answer

A

Answer

B

Question 11

Which of the following BEST describes the object in position D?

Accepted Answer

The velocity of the object is decreasing. Therefore, the object is decelerating.

Answer

The object is changing its direction.

Answer

The velocity of the object is increasing. Therefore, the object is accelerating.

Answer

The object is moving in a constant velocity.

Question 12

Mechanical waves transport energy from one place to another through _________.

Accepted Answer

C. Alternately vibrating particles of the medium

Answer

Both A and B

Answer

A. Particles travelling with the wave

Answer

B. Vibrating particles and travelling particles

Question 13

What will happen as the frequency of a wave increases and its speed remains constant?

Accepted Answer

The wavelength decreases.

Answer

The wave period increases.

Answer

The amplitude increases.

Answer

The wavelength increases.

Question 14

How will you describe of the vibrations of a transverse wave?

Accepted Answer

At right angles to the direction of wave travel.

Answer

Opposite to the direction of wave travel.

Answer

Above and below the moving wave

Answer

In the same direction as the wave travels.

Question 15

The frequency of a wave is 2beats per second. What is the velocity of a wave if its wavelength is 4m?

Accepted Answer

8m/s

Answer

10m/s

Answer

4m/s

Answer

6m/s

Question 16

What will happen as the frequency of a wave increases and its speed remains constant?

Accepted Answer

The wavelength decreases

Answer

The wavelength increases

Answer

The wave period increases

Answer

The amplitude increases

Question 17

The amplitude of the wave in the diagram below is represented by letter ______.

Accepted Answer

D

Answer

A

Answer

C

Answer

B

Question 18

The speed of sound varies in different media. In which medium will sound travel the fastest?

Accepted Answer

steel

Answer

air

Answer

water

Answer

sound travels the same speed in all mediums.

Question 19

What is the source of a soundwave?

Accepted Answer

vibrations

Answer

conduction

Answer

light waves

Answer

electricity

Question 20

What do we call the region in the sound waves where molecules are bunched closer together?

Accepted Answer

rarefaction

Answer

compression

Answer

interference

Answer

polarization

Question 21

Which of the following statements is TRUE?

Accepted Answer

sound travels faster in water than in air.

Answer

sound travels faster in air than in water.

Answer

sound travels slowest in solids.

Answer

sound travels in a vacuum.

Question 22

Hertz (Hz) is the measure of sound wave frequency. It measures how many waves pass between two points in one second. If there are 30 waves that pass in one second, what is the sound’s frequency in Hz?

Accepted Answer

30 Hz

Answer

25 Hz

Answer

20 Hz

Answer

15 Hz

Question 23

Two sound waves are traveling through a container of unknown gas. Wave A has a wavelength of 1.2 m. Wave B has a wavelength of 3.6 m. The frequency of wave B must be __________ the frequency of wave A.

Accepted Answer

one-third

Answer

the same as

Answer

three times larger than

Answer

one-ninth

Question 24

Mechanical waves that are created through areas of compression and rarefactions are called_________________ waves.

Accepted Answer

longitudinal

Answer

diffracted

Answer

electrical

Answer

transverse

Question 25

If a wave has a frequency of 10 Hz and a wavelength of 100 m, what is its velocity?

Accepted Answer

1000 m/s

Answer

100 m/s

Answer

20 m/s

Answer

10 m/s

Question 26

A boy felt like the sound level of in his room was too high. He turned the knob of his music system to make it quieter. What physical property of the sound changed and how did it change?

Accepted Answer

The amplitude decreased

Answer

The frequency decreased

Answer

The frequency increased

Answer

The amplitude increased

Question 27

What type of electromagnetic radiation can damage cells of living things and is blocked by Earth’s ozone layers?

Accepted Answer

Ultraviolet

Answer

Visible

Answer

Infrared

Answer

Microwave

Question 28

Jed wants to list types of radiation on their energy levels. Which list shows the order of radiation types from highest to lowest energy?

Accepted Answer

gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.

Answer

infrared radiation, microwaves, radio waves, visible light, x-rays, gamma rays, UV rays

Answer

visible light, infrared radiation, UV rays, microwave, radio waves, x-rays, gamma rays

Answer

x-rays, gamma rays, infrared radiation, microwaves, radio waves, UV rays, visible light

Question 29

When white light shines through a prism, the light is separated into all its colors in what proper order?

Accepted Answer

red, orange, yellow, green, blue, indigo and violet

Answer

red, orange, yellow, blue, violet, green and indigo

Answer

red, orange, yellow, green, blue and violet

Answer

red, orange, yellow, green, blue, violet and indigo

Question 30

Which of the following statements about heat is correct?

Accepted Answer

It is the transfer of thermal energy from a hot object to a cold object.

Answer

It is absorbed by an object with a high temperature.

Answer

It is the transfer of thermal energy from a cold object to a hot object.

Answer

It is possessed by an object with a high temperature.

Question 31

The temperature of object A is 90 ⁰C and object B is 30⁰C. What will be the direction of the flow of heat between these two objects if they are in direct contact?

Accepted Answer

The heat will flow from object A to object B.

Answer

The heat will flow either from object A or object B.

Answer

The heat will flow from object B to object A.

Answer

Heat transfer will not occur between these two objects.

Question 32

If you stand near the stove, you will feel the heat even if you do not touch it directly. What method of heat transfer causes this situation?

Accepted Answer

C. Radiation

Answer

B. Convection

Answer

A. Conduction

Answer

Both A and B

Question 33

Why are the handles of cooking pans and kettles covered with wood or rubber?

Accepted Answer

Wood and rubber are good insulators of heat.

Answer

Wood and rubber are good conductors of heat.

Answer

Wood and rubber can facilitate the cooking process.

Answer

Wood and rubber can prevent convection.

Question 34

What is the condition necessary for heat transfer to happen between two substances or objects?

Accepted Answer

Difference in temperature

Answer

Movement of particles

Answer

Movement of fluids

Answer

Difference in density

Question 35

How do the warm air and cold air move during convection?

Accepted Answer

The warm air rises and the cold air sinks to replace the warm air.

Answer

The cold air remains on top while the warm air stays at the bottom.

Answer

Both the warm air and the cold air rise and sink in a circular pattern.

Answer

The cold air rises to replace the warm air that sinks.

Question 36

What happens when an object becomes negatively charged?

Accepted Answer

It loses proton.

Answer

It gains proton.

Answer

It loses electron.

Question 37

Which of the following statements about the charges of an atom is correct?

Accepted Answer

Electron can be found on the orbital and has a negative charge.

Answer

Proton has negative charge located inside the nucleus.

Answer

Electron can be found inside the nucleus and has a negative charge.

Answer

Proton has positive charge while neutron has negative charge.

Question 38

How does an atom become electrically charged?

Accepted Answer

When the number of protons and electrons are not equal.

Answer

When the number of proton and neutrons are equal.

Answer

When the number of protons and electrons are equal.

Answer

When the number of protons and neutrons are not equal.

Question 39

According to Electrostatic Law: Unlike charges ___________, like charges ____________. Which of the following is a correct pair of words to complete the statement?

Accepted Answer

attract; repel

Answer

retain; contract

Answer

contract; retain

Answer

repel; attract

Question 40

How is charging by induction different from charging by conduction?

Accepted Answer

Charging by conduction requires direct contact to object while charging by induction does not.

Answer

Charging by conduction can transform a neutral object to a charged to object.

Answer

Charging by induction distributes the electron from one object to another.

Answer

Charging by induction requires direct contact to object while charging by conduction does not.

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