Em Spectrum, Light And Reflection

Question 1

What does EM stand for in EM waves?

Answer 1

Electromagnetic

Question 2

True or False: Electromagnetic waves require a medium to travel through.

Answer 2

False

Question 3

What is the speed of light in a vacuum?

Answer 3

Approximately 299,792 kilometers per second

Question 4

Fill in the blank: The electromagnetic spectrum ranges from _______ waves to gamma rays.

Answer 4

radio

Question 5

Which type of EM wave has the longest wavelength?

Answer 5

Radio waves

Question 6

What is the frequency range of visible light?

Answer 6

Approximately 430 to 750 terahertz

Question 7

True or False: Infrared waves are visible to the human eye.

Answer 7

False

Question 8

What phenomenon describes the bending of light when it passes from one medium to another?

Answer 8

Refraction

Question 9

What is the primary source of natural light on Earth?

Answer 9

The Sun

Question 10

Fill in the blank: Light behaves both as a particle and as a _______.

Answer 10

wave

Question 11

What is the term for the bouncing of light off a surface?

Answer 11

Reflection

Question 12

Which law describes the angle of incidence equaling the angle of reflection?

Answer 12

The Law of Reflection

Question 13

What type of surface reflects light uniformly?

Answer 13

A smooth surface

Question 14

True or False: All objects emit light.

Answer 14

False

Question 15

What is the range of wavelengths for ultraviolet light?

Answer 15

10 nm to 400 nm

Question 16

Which part of the EM spectrum is used for communication technologies, such as radio and television?

Answer 16

Radio waves

Question 17

Fill in the blank: _______ waves have the highest energy in the electromagnetic spectrum.

Answer 17

Gamma

Question 18

What is the term for the dispersion of light into its constituent colors?

Answer 18

Spectroscopy

Question 19

What is the main effect of light when it strikes a rough surface?

Answer 19

Scattering

Question 20

True or False: The color of an object is determined by the wavelengths of light it reflects.

Answer 20

True

Question 21

What is the phenomenon called when light passes through a prism and separates into a spectrum?

Answer 21

Dispersion

Question 22

What type of lens converges light rays?

Answer 22

Convex lens

Question 23

What is the unit of measurement for frequency?

Answer 23

Hertz (Hz)

Question 24

Fill in the blank: The visible spectrum ranges from _______ nm to _______ nm.

Answer 24

400, 700

Question 25

What is the primary difference between a concave and a convex mirror?

Answer 25

A concave mirror converges light, while a convex mirror diverges light.