Quiz about Science 7: Quarter 3

Question 1

What do you call a propagation of disturbances through a medium in which energy is transferred?

Accepted Answer

Wave

Answer

Wave pulse

Answer

Wave train

Answer

Wave motion

Question 2

Which property of a wave describes the number of waves passing a point in one second?

Accepted Answer

Frequency

Answer

Wavelength

Answer

Amplitude

Answer

Speed

Question 3

How would describe the motion of a body represented on Illustration A?

Accepted Answer

Uniform motion

Answer

Body is at rest

Answer

Decreasing Velocity

Answer

Increasing Velocity

Question 4

Which of the following refers to the sound quality?

Accepted Answer

Tone

Answer

Pitch

Answer

Intensity

Answer

Frequency

Question 5

Which refers to a push or pull of an object?

Accepted Answer

Force

Answer

Speed

Answer

Displacement

Answer

Acceleration

Question 6

What do you call a section of longitudinal wave where particles are less crowded?

Accepted Answer

Rarefaction

Answer

Compression

Answer

Electromagnetic

Answer

Mechanical

Question 7

What type of wave is a sound wave?

Accepted Answer

Longitudinal wave

Answer

Transverse wave

Answer

Electromagnetic wave

Answer

Mechanical wave

Question 8

You're riding in a car with a friend who's driving. Suddenly, your friend slams on the brakes to avoid hitting a pedestrian. If you're not wearing a seat belt, what is the most likely outcome?

Accepted Answer

You will be propelled forward, potentially hitting the dashboard or windshield.

Answer

You will remain safely in your seat as the car comes to a stop.

Answer

You will be pulled backward, away from the dashboard.

Answer

You will experience no change in motion.

Question 9

Which of the following best describes the relationship between wavelength and pitch in sound waves?

Accepted Answer

Shorter wavelengths correspond to higher pitch.

Answer

Longer wavelengths correspond to higher pitch.

Answer

Wavelength and pitch are unrelated.

Answer

Wavelength and pitch are inversely proportional.

Question 10

Which SI unit is used to express speed?

Accepted Answer

Meter per Second (m/s)

Answer

Newton (N)

Answer

Meter per second squared (m/s2)

Answer

Second (s)

Question 11

What do you call the total length covered by a moving body?

Accepted Answer

Displacement

Answer

Force

Answer

Speed

Answer

Acceleration

Question 12

How would describe the motion of a body represented on Illustration B?

Accepted Answer

Uniform motion

Answer

Body is at rest

Answer

Decreasing Velocity

Answer

Increasing Velocity

Question 13

Which refers to a change that occurs in an object's speed or direction in a certain period of time and is measured as change in velocity over a period of time?

Accepted Answer

Acceleration

Answer

Force

Answer

Speed

Answer

Displacement

Question 14

Which type of wave that can transmit energy even without any material/medium?

Accepted Answer

Electromagnetic

Answer

Longitudinal

Answer

Transversal

Answer

Mechanical

Question 15

Which of the following best describes a transverse wave?

Accepted Answer

A wave in which particles of the medium vibrate perpendicular to the direction of wave propagation.

Answer

A wave in which particles of the medium vibrate parallel to the direction of wave propagation.

Answer

A wave that cannot propagate through a medium.

Answer

A wave that only travels in a straight line.

Question 16

Which of the following statements best evaluates the relationship between wavelength and energy in a wave?

Accepted Answer

Shorter wavelengths have higher energy than longer wavelengths.

Answer

Longer wavelengths have higher energy than shorter wavelengths.

Answer

Wavelength and energy are unrelated in a wave.

Answer

Wavelength and energy are directly proportional in a wave.

Question 17

Who is the scientist credited with the unit for frequency?

Accepted Answer

Heinrich Rudolf Hertz

Answer

Isaac Newton

Answer

Albert Einstein

Answer

Max Planck

Question 18

Which statement best analyzes the relationship between wavelength and energy in the electromagnetic spectrum?

Accepted Answer

B) Shorter wavelengths have higher energy than longer wavelengths because they carry more information.

Answer

A) Longer wavelengths have higher energy than shorter wavelengths because they travel faster.

Answer

C) Longer wavelengths have lower energy than shorter wavelengths because they vibrate more slowly.

Answer

D) Shorter wavelengths have lower energy than longer wavelengths because they require more time to propagate.

Question 19

What would be the man's displacement if he walks back to his original position (from Point C to Point D)?

Accepted Answer

0 (Zero)

Answer

50 steps

Answer

10 steps

Answer

5 steps

Question 20

Objects that emit or send off their own light are luminous objects. Which of the following is NOT luminous?

Accepted Answer

C) Moon

Answer

A) Sun

Answer

B) Stars

Answer

D) Light bulbs

Question 21

In the scenario described, why is it important to wear a seat belt?

Accepted Answer

To reduce the risk of injury during sudden stops or collisions by restraining your body and preventing you from being ejected from the vehicle.

Answer

To keep you comfortable during long car rides.

Answer

To prevent you from sliding around in your seat.

Answer

To follow traffic laws and regulations.

Question 22

Why do solid objects allow sound to travel faster compared to liquids and gases?

Accepted Answer

Because solids have tightly packed molecules, which allows sound waves to travel quickly through the material.

Answer

Because solids have more space between their molecules, allowing sound waves to move faster.

Answer

Because liquids and gases have higher densities, causing sound waves to slow down.

Question 23

Which refers to a form of electromagnetic radiation with frequency ranges from 4x104 to 8x1014 Hz and responsible for the sense of sight?

Accepted Answer

A) Visible Light

Answer

B) Radio wave

Answer

C) Micro wave

Answer

D) Ultraviolet

Question 24

Bats are fascinating mammals known for their ability to navigate and hunt in the dark. How do bats primarily rely on sound waves, rather than light waves, for navigation during nighttime?

Accepted Answer

D) Because bats emit high-frequency sound waves that bounce off objects, allowing them to detect obstacles and prey through echolocation.

Answer

A) Because bats have poor eyesight and cannot see in the dark, making it difficult to detect obstacles using light waves.

Answer

B) Because sound waves travel faster than light waves, allowing bats to quickly detect and avoid obstacles in their path.

Answer

C) Because sound waves have a longer wavelength than light waves, providing more detailed information about the surroundings.

Question 25

How does a thermos flask keep hot liquids hot and cold liquids cold?

Accepted Answer

A) By preventing heat transfer through conduction.

Answer

B) By allowing heat to escape through radiation.

Answer

C) By promoting heat transfer through convection.

Answer

D) By absorbing heat from the surroundings.

Question 26

How does an increase in amplitude affect the intensity of a sound wave?

Accepted Answer

An increase in amplitude increases the intensity of the sound wave.

Answer

An increase in amplitude decreases the intensity of the sound wave.

Answer

An increase in amplitude has no effect on the intensity of the sound wave.

Answer

An increase in amplitude decreases the velocity of the sound wave.

Question 27

What distance would be covered by a moving vehicle in 1 minute if its speed is 5.0 m/s?

Accepted Answer

300 m/s

Answer

5 m/s

Answer

6 m/s

Answer

4 m/s

Question 28

If you shake one end of a rope up and down, causing a wave to travel along its length, what type of wave are you producing?

Accepted Answer

Transverse wave

Answer

Longitudinal wave

Answer

Electromagnetic wave

Answer

Standing wave

Question 29

What do you call a form of energy that is produced when air molecules vibrate and move in pattern known as wave?

Accepted Answer

Sound

Answer

Light

Answer

Water

Answer

Wind

Question 30

Which device used to measure temperature?

Accepted Answer

B) Thermometer

Answer

A) Barometer

Answer

C) Decibel Meter

Answer

D) Speedometer

Question 31

How does heat flow from one object to another?

Accepted Answer

A) Heat flows from a hotter object to a colder object until thermal equilibrium is reached.

Answer

B) Heat flows from a colder object to a hotter object until thermal equilibrium is reached.

Answer

C) Heat flows randomly between objects regardless of temperature differences.

Answer

D) Heat flows in a specific direction determined by the density of the objects involved.

Question 32

How long does it take for visible light to travel from the Sun to the Earth?

Accepted Answer

A) 8 minutes and 20 seconds

Answer

B) 24 hours

Answer

C) 1 second

Answer

D) 1 year

Question 33

What will be the arrangement of electromagnetic waves if we will arrange them according to decreasing energy?

Accepted Answer

B.) X-ray, light, radio

Answer

A.) Gamma, radio, microwave

Answer

C.) X-ray, gamma, ultraviolet

Answer

D.) Gamma, ultraviolet, X-ray

Question 34

In an experiment, a wave pulse is generated on a stretched rope by quickly moving one end up and down. Which of the following statements best describes the behavior of the wave pulse as it travels along the rope?

Accepted Answer

The shape of the wave pulse remains unchanged as it travels along the rope.

Answer

The amplitude of the wave pulse decreases as it travels along the rope.

Answer

The speed of the wave pulse increases as it travels along the rope.

Answer

The wavelength of the wave pulse decreases as it travels along the rope.

Question 35

If you compress and then stretch a spring repeatedly, what type of wave are you producing?

Accepted Answer

Longitudinal wave

Answer

Transverse wave

Answer

Electromagnetic wave

Answer

Standing wave

Question 36

Based on the situation and diagram shown above, what would be the man's total distance if he walks 15 steps backward from Point C to Point D?

Accepted Answer

40 steps

Answer

10 steps

Answer

5 steps

Answer

0 (Zero)

Question 37

Lydia de Vega is a world known Filipino track and field athlete. She can run the 100.0 m dash in about 11.0 seconds. What is her average speed?

Accepted Answer

9.09 m/s

Answer

110 m/s

Answer

1,110 m/s

Answer

89 m/s

Question 38

A man is driving his sports car down a four-lane highway at 40 m/s. He comes up behind a slow-moving dump truck and decides to pass it in the left-hand lane. If Nathaniel can accelerate at 5 m/s2, how long will it take for him to reach the speed of 60 m/s?

Accepted Answer

4 s

Answer

1 s

Answer

2 s

Answer

3 s

Question 39

Consider the following scenario: A thunderstorm is brewing, and dark clouds are gathering overhead. Suddenly, a bolt of lightning streaks across the sky, followed by a loud clap of thunder. Based on this scenario, which of the following statements provides the most accurate analysis of how lightning occurs?

Accepted Answer

C) Lightning is the result of the buildup and discharge of electrical charge within clouds and between clouds and the ground.

Answer

A) Lightning is caused by clouds colliding with each other, leading to the discharge of electrical energy.

Answer

B) Lightning occurs when water droplets in the atmosphere freeze and release electrical energy.

Answer

D) Lightning happens when the sun's rays interact with raindrops in the atmosphere, producing electrical sparks.

Question 40

Which refers to a form of energy that comes from electrically charged bodies such as ions and electrons?

Accepted Answer

B. Electrical Energy

Answer

A. Light Energy

Answer

C. Wind Energy

Answer

D. Wave Energy

Question 41

Which analogy is correct about insulator and conductor?

Accepted Answer

A. conductor : metal spoon ; insulator : wood

Answer

B. conductor : paper ; insulator : towel

Answer

C. conductor : copper wire ; insulator : tin can

Answer

D. conductor : leaves ; insulator : galvanized steel

Question 42

Imagine you're setting up a new electrical appliance in your home. Why is it important to ensure that the appliance is properly grounded or earthed?

Accepted Answer

A) To prevent electrical shocks and fires by providing a safe path for fault currents.

Answer

B) To reduce static electricity buildup and protect the appliance from lightning strikes.

Answer

C) To improve the efficiency of the appliance and ensure stable voltage levels.

Answer

D) To minimize electrical noise and interference in the appliance's operation.

Question 43

Consider the following scenario: Two objects, one positively charged and the other negatively charged, are brought close to each other. Based on the principles of the law of charges, which of the following statements provides the most accurate analysis of what will happen?

Accepted Answer

C) The positively charged object will attract the negatively charged object, causing them to move closer to each other due to their opposite charges.

Answer

A) The positively charged object will repel the negatively charged object, causing them to move away from each other due to their like charges.

Answer

B) The negatively charged object will attract the positively charged object, causing them to move closer to each other due to their opposite charges.

Answer

D) The negatively charged object will repel the positively charged object, causing them to move away from each other due to their like charges.

Question 44

What most likely happened when the mongo seeds were heated with water, and in what direction did they move?

Accepted Answer

A) The mongo seeds absorbed water, causing them to swell and expand. This expansion likely pushed the seeds towards the heat source.

Answer

B) The heat from the water caused the seeds to release trapped gases, resulting in a slight upward movement.

Answer

C) The seeds softened but remained stationary due to the absence of external forces.

Answer

D) The seeds became buoyant and floated on the water's surface but did not move directionally.

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