1. What is the phenomenon of the change in the direction of light when it passes from one medium to another?

2. What happens to the wavelength of light when it travels from air into glass?

3. When light travels through a prism and separates into colors, what is this process called?

4. What is the unit of measurement for the frequency of light waves?

5. Which scientist is famous for his experiments with light, prisms, and color?

6. Which color of light has the longest wavelength?

7. When light passes from air into water, what happens to its speed?

8. Which of the following travels faster than light?

9. What does a prism do to white light?

10. What happens to the speed of light when it travels from a denser to a rarer medium?

11. Which type of lens diverges light rays and always forms virtual images?

12. What is the phenomenon where light bends as it passes through different substances?

13. What type of mirror always forms a virtual, upright, and diminished image?

14. Which color is produced by combining red and green light in the additive color model?

15. Which celestial body emits its own light, making it visible in the night sky?

16. What type of reflection occurs when light reflects off a smooth surface at the same angle it strikes it?

17. What is the speed of light in a vacuum?

18. In which medium does light travel the slowest?

19. Which part of the electromagnetic spectrum has wavelengths longer than visible light?

20. What is the name for the bouncing back of light from a surface?

21. Which phenomenon causes a pencil to appear bent when partially submerged in water?

22. Which part of the eye is responsible for focusing light onto the retina?

23. What type of lens converges light rays and can form real or virtual images?

24. In which medium does light travel the fastest?

25. Which color is obtained by mixing blue and green light in the additive color model?

26. What is the phenomenon where white light separates into its component colors when passing through a prism?

27. What is the primary colors of light in the RGB color model?

28. What is the color seen when white light passes through a prism and bends the least?

29. What is the unit of measurement for the speed of light?

30. What is the term for the bending of light waves due to a change in speed as they pass from one medium to another?

1. What is the range of human hearing in Hertz?

2. Animal known for exceptional hearing?

3. What is the unit of measurement for the frequency of sound waves?

4. Unit of measurement for sound?

5. Which musical instrument is known for using air columns to produce sound?

6. Which of the following is an example of a percussion instrument?

7. In which medium does sound travel the slowest?

8. What is the unit of power for sound waves?

9. Outer ear's primary purpose?

10. Speed of sound in air at room temperature?

11. What is the term for the distance between one peak of a sound wave and the next?

12. How does sound travel through a vacuum?

13. Bouncing back of sound waves?

14. What is the term for the highest point of a sound wave?

15. What property of sound determines loudness?

16. What causes the sensation of sound in the human ear?

17. What part of the ear collects sound waves?

18. Which of the following animals does not use echolocation?

19. What is the term for a sound that is unpleasant to the ear?

20. Device to measure sound intensity?

21. In which medium does sound travel the fastest?

22. Term for highness or lowness of a sound?

23. Which material is a good conductor of sound?

24. What is the purpose of the tiny hairs in the inner ear?

25. Unit of frequency for sound waves?

26. What is the source of sound in a guitar?

27. Which gas is commonly used to transmit sound in cartoons?

28. Instrument with vibrating reeds?

29. What part of the ear translates sound vibrations into electrical signals for the brain?

30. Material for absorbing sound waves?

1. Magenta, green and orange are the ______ pigment colors.

2. __________ objects give out their own light.

3. __________ are thickest in the middle and thin round the edge.

4. A magenta surface absorbs __________ light and reflects red and blue light.

5. The angles are measured between the rays and a line drawn at 90^o to the mirror called the __________.

6. Yellow pigment color mixed with red gives ________.

7. On earth, the _____ is main source of light.

8. A red filter absorbs blue and green light and transmits _______ light.

9. Chemicals which produce colors are called ____________.

10. _________ are non-luminous objects.

11. Light travels one _________ times faster than sound.

12. Light rays can be represented on diagram by ___________.

13. The ray of light entering the new material is called the ___________.

14. The bent ray of light is called the ______________.

15. _________ objects do not emit light.

16. ________ are thin in the middle and thick round the edge.

17. _____ are luminous source.

18. When rays of light strike a flat (or plane) surface like a mirror, they are reflected in the ________ direction.

19. Blue pigment color mixed with yellow gives ________.

20. A __________ lens can be used as magnifying glass.

1. The term "bioluminescence" refer to in the context of light means ________.

2. When light passes through a convex lens and forms a real image, the image is located at ________.

3. _______ is the bending of light waves around obstacles and openings.

4. The bending of light as it passes around the edge of an obstacle is called ______.

5. _________  is the phenomenon when light bends around small particles, making the sky appear blue.

6. ___________  is the primary function of the retina in the human eye.

7. In the color spectrum, _____  color is on the opposite side of the wheel from orange.

8. _______ appears black because it absorbs all colors of light.

9. Rough surfaces reflect light _________.

10. _________ is the term for the bending of light waves around the edges of an aperture or obstacle.

11. Materials in which light can pass through are __________.

12. __________ is translucent material.

13. The angle of incidence at which light is completely reflected back is called ____________.

14. Light rays travel _______.

15. ______ is the part of the eye which controls the amount of light entering.

16. When a rainbow is formed, ________  color is on the outer edge

17. _______ is the process where light is absorbed by atoms and then re-emitted in different directions.

18. __________ is the phenomenon when light rays spread out after passing through a narrow slit.

19. ________ part of electromagnetic waves has the shortest wavelength.

20. The scientific name for a flat mirror is _______.

1. Which animal is known for producing infrasound for communication?

2. Which part of the ear helps in localizing the direction of a sound source?

3. Which is not a form of energy?

4. What is the minimum number of compressions and rarefactions needed for one complete cycle of a sound wave?

5. What is the primary function of the ear's hammer, anvil, and stirrup?

6. In which part of the ear are the semicircular canals located?

7. What is the primary function of the pinna (external ear)?

8. What part of the ear is responsible for converting sound vibrations into nerve impulses?

9. What is the frequency range of ultrasonic waves?

10. Which of the following materials is a good insulator of sound?

11. What property of a sound wave is associated with its quality or color?

12. Which animal is known for producing ultrasound for communication?

13. What is the unit of measurement for the loudness of sound?

14. Which property of a sound wave determines its pitch?

15. What is the term for the persistence of sound after the source stops producing it?

16. Which musical instrument produces sound by vibrating a column of air in a pipe?

17. Which type of wave is a sound wave?

18. What is the term for the perceived highness or lowness of a sound?

19. In which medium does sound travel at a constant speed regardless of frequency?

20. Which type of waves are used in sonar to detect underwater objects?

21. What part of the ear is responsible for detecting changes in head position?

22. What is the term for the interference of sound waves resulting in a louder sound?

23. What is the speed of sound in water?

24. What is the medical term for the ringing sound in the ears?

25. Which type of waves are used in medical ultrasound imaging?

1. __________ can be detected by whales, elephants, and rhinoceroses.

2. The Human ear is able to detect sound in a range _________.

3. ___________ is used in Hospitals for breaking down kidney stones.

4. The loudness of a sound depends on the height of the sound waves __________.

5. Sound waves take about ___ seconds to travel one kilometer.

6. Noise levels can be measured with a ___________.

7. Noise is measured in __________.

8. Pitch of a sound is measured in ________.

9. Sound waves are ___________ waves.

10. Sound cannot travel through a __________.

11. Sound is made when something _______.

12. Loudness of a sound can be measured in ___________.

13. Too much noise causes _________ pollution.

14. Sounds above 20.000Hz are called __________.

15. _____________ is used for monitoring earthquakes and studying rock information.

16. __________ can only move when there is material to move through.

17. The relationship between the speed, frequency, and wavelength of a sound can be shown by the equation:______.

18. In a __________, it is a string which vibrates.

19. A _________  is a regular backward and forward movement.

20. A sound meter converts _________ energy into electrical energy.

21. Sound with a high frequency have a _______ pitch.

22. Sound below _____ are called infrasound.

23. Bats and dogs can detect _________.

24. ___________ is the distance between two compressions or rarefactions.

25. The ___________ of a sound is the number of sound vibrations set up in 1 second.

1. What is the formula for calculating moment?

2. What is a moment in physics?

3. What is pressure?

4. What is the pressure exerted by a force of 200 N over an area of 5 m²?

5. Which of the following would result in an increase in pressure?

6. What is the SI unit of pressure?

7. Which of the following is NOT a common unit of pressure?

8. A door is easier to open when pushed at which point?

9. Which principle explains why a person submerged deeper in water experiences greater pressure?

10. A force of 50 N is applied to an area of 10 m². What is the pressure exerted?

11. Which of the following statements is true regarding pressure in a fluid?

12. What is the formula for pressure?

13. Which of the following would increase the moment of a force?

14. What is the pressure at sea level?

15. Which device is used to measure atmospheric pressure?

16. Which of the following is NOT a factor affecting fluid pressure?

17. Which of the following is an example of fluid pressure?

18. If the distance from the pivot point is doubled, what happens to the moment of a force?

19. Which of the following units is used to measure pressure?

20. Which of the following machines operates based on the principle of moments?

21. What is the pressure at a depth of 10 meters in water? (Density of water = 1000 kg/m³)

22. A lever is a simple machine that operates based on which principle?

23. What is the pressure exerted by a column of mercury that is 760 mm high?

24. A hydraulic press operates based on which principle?

25. Which of the following is NOT a factor affecting the moment of a force?

26. If the area over which a force is distributed decreases, what happens to pressure?

27. What happens to pressure as depth increases in a fluid?

28. What is the SI unit of moment?

29. Which of the following is NOT a unit of pressure?

30. What is the moment of a force if a 50 N force is applied at a distance of 2 meters from the pivot?

1. In which type of lever, is the load between the effort and the pivot?

2. Which of the following is a characteristic of a first-class lever?

3. Which is a simple machine; it helps to make work easier?

4. What happens to the pressure in a liquid if its density increases?

5. In which type of lever, is the effort between the load and the pivot?

6. The place where two bones meet is called?

7. Which of the following statements is true about a third-class lever?

8. Which of the following would decrease the moment of a force?

9. Which of the following is an example of a first-class lever in the human body?

10. If two equal forces act in opposite directions, what is the resultant moment?

11. The pressure exerted by a gas is due to:

12. What can be squashed easily because its molecules have lots of space between them?

13. When the muscles work against each other, they are called which pairs?

14. A simple hydraulic jack is used to lift which loads?

15. Which of the following is an example of a second-class lever?

16. What happens to the pressure of a liquid if the area over which the force is distributed decreases?

17. Which law states that the pressure of a gas is inversely proportional to its volume when the temperature is held constant?

18. Which type of lever is a wheelbarrow?

19. Which type of lever is most commonly used in the human body?

20. Which of the following statements about moments is false?

21. What is the advantage of using a lever?

22. What is the unit of pressure commonly used to measure pressure in liquids?

23. Which of the following is NOT a characteristic of moments?

24. Which type of lever is a pair of scissors?

25. Which of the following is NOT an example of a lever?

26. Which of the following is a type of lever where the load is between the effort and the pivot?

27. How does the pressure at the bottom of a container filled with liquid compare to the pressure at the top?

28. What principle explains why pressure increases with depth in a liquid?

29. In a hydraulic lift, pressure is transmitted through a liquid to lift heavy objects. This phenomenon is explained by:

30. Which of the following factors affects the mechanical advantage of a lever?

1. What is the center of gravity of a suspended object?

2. What force acts on a book placed on a table?

3. Which of the following factors affects the stability of an object?

4. How does the distribution of mass affect the stability of an object?

5. What type of equilibrium is exhibited by an object that returns to its original position after being slightly displaced?

6. What type of equilibrium exists when a system returns to its original state after being disturbed?

7. Which of the following objects has its center of gravity closer to the ground?

8. What is the point at which lever turns?

9. In a uniform object of regular shape, where is the center of gravity located?

10. What is the condition for an object to be in neutral equilibrium?

11. How does increasing the base of support affect the stability of an object?

12. In which direction does an object tend to fall if its center of gravity is not supported?

13. What is equilibrium?

14. Which type of equilibrium is demonstrated when an object remains in its displaced position?

15. What is stability?

16. How does the center of gravity of an irregularly shaped object compare to that of a regularly shaped object?

17. What is the center of gravity of an object?

18. What is the condition for an object to be in stable equilibrium?

19. Which of the following scenarios describes an object in translational equilibrium?

20. Which type of base provides the greatest stability for an object?

21. What happens to the stability of an object if its center of gravity is lowered?

22. Which force acts to return an object to its original position after being displaced?

23. Which of the following objects has greater stability?

24. Which of the following factors affects the center of gravity of an object?

25. How does the shape of an object affect its center of gravity?

1. Which of the following is a good insulator?

2. What state of matter has particles closely packed with fixed positions?

3. What state of matter has particles widely spaced and can move freely?

4. Which of the following is a good conductor of heat?

5. What is convection?

6. What state of matter has particles close together but can move past each other?

7. What is a convection current?

8. What is the principle of mass conservation?

9. What is the main method of heat transfer in metals?

10. What happens to ice at 0°C?

11. What happens to particles in a liquid when it evaporates?

12. What is conduction?

13. What is radiation?

14. What happens to water at 100°C?

15. What is the main method of heat transfer in fluids?