Science

Question 1

What is the speed of light in a vacuum?

Answer 1

Approximately 299,792 kilometers per second (km/s).

Question 2

True or False: Sound can travel through a vacuum.

Answer 2

False.

Question 3

Fill in the blank: The phenomenon of light bending when it passes from one medium to another is called __________.

Answer 3

refraction.

Question 4

What is the unit of measurement for frequency?

Answer 4

Hertz (Hz).

Question 5

Which type of wave is sound?

Answer 5

Longitudinal wave.

Question 6

What is the visible spectrum range of light in nanometers?

Answer 6

Approximately 400 to 700 nanometers.

Question 7

True or False: Light behaves both as a wave and a particle.

Answer 7

True.

Question 8

What is the term for the lowest frequency of a sound wave that can be heard by the human ear?

Answer 8

Infrasound.

Question 9

Fill in the blank: The __________ of a sound wave determines its pitch.

Answer 9

frequency.

Question 10

What is the phenomenon where light waves spread out after passing through a narrow opening?

Answer 10

Diffraction.

Question 11

What is the primary medium through which sound travels fastest?

Answer 11

Solids.

Question 12

True or False: Ultraviolet light is visible to the human eye.

Answer 12

False.

Question 13

What is the term for the amount of energy a sound wave carries?

Answer 13

Intensity.

Question 14

What is the name of the effect where the frequency of a wave changes due to the motion of the source or observer?

Answer 14

Doppler effect.

Question 15

Fill in the blank: The color perceived by the human eye is determined by the __________ of light.

Answer 15

wavelength.

Question 16

What type of wave is light?

Answer 16

Electromagnetic wave.

Question 17

What is the range of frequencies that humans can typically hear?

Answer 17

20 Hz to 20,000 Hz (20 kHz).

Question 18

True or False: Sound waves require a medium to propagate.

Answer 18

True.

Question 19

What is the term for the bouncing back of light when it hits a surface?

Answer 19

Reflection.

Question 20

Fill in the blank: The __________ of light is responsible for the different colors observed in a prism.

Answer 20

dispersion.

Question 21

What is the phenomenon called when sound waves reinforce each other?

Answer 21

Constructive interference.

Question 22

What is the relationship between wavelength and frequency in waves?

Answer 22

They are inversely related; as wavelength increases, frequency decreases.

Question 23

True or False: Infrared radiation has a longer wavelength than visible light.

Answer 23

True.

Question 24

What is the term for the highest frequency of a sound wave that can be heard by the human ear?

Answer 24

Ultrasound.

Question 25

Fill in the blank: The __________ determines how loud a sound is perceived.

Answer 25

amplitude.

Question 26

What is the principle that states that light travels in straight lines unless acted upon by an external force?

Answer 26

The rectilinear propagation of light.

Question 27

What is the term for the bending of light due to gravity?

Answer 27

Gravitational lensing.

Question 28

True or False: The speed of sound is faster than the speed of light.

Answer 28

False.

Question 29

What is the name of the unit that measures sound intensity?

Answer 29

Decibel (dB).

Question 30

Fill in the blank: The __________ of a wave is the distance between consecutive crests or troughs.

Answer 30

wavelength.

Question 31

What type of electromagnetic radiation has the shortest wavelength?

Answer 31

Gamma rays.

Question 32

What is the term used to describe the range of electromagnetic waves, including light?

Answer 32

Electromagnetic spectrum.

Question 33

True or False: Sound travels faster in air than in water.

Answer 33

False.

Question 34

What is the term for the change in sound frequency perceived by an observer moving relative to the source of sound?

Answer 34

Doppler shift.

Question 35

Fill in the blank: The __________ of a sound determines its timbre.

Answer 35

harmonics.

Question 36

What phenomenon occurs when light passes through a prism?

Answer 36

Dispersion.

Question 37

What is the primary factor that affects the speed of sound in a medium?

Answer 37

Temperature.

Question 38

True or False: Visible light is a small part of the electromagnetic spectrum.

Answer 38

True.

Question 39

What is the term for the measure of how much light is absorbed by a material?

Answer 39

Absorbance.

Question 40

Fill in the blank: The __________ effect describes the change in frequency of a wave in relation to an observer moving relative to the wave source.

Answer 40

Doppler.