CH4 (Quantum Theory)

Question 1

A _____ can be thought of as a vibrating disturbance by which energy is transmitted.

Answer 1

wave

Question 2

What are the characteristics that help us know the type of wave?

Answer 2

their length, height, and the number of waves that pass through a certain point in one second.

Question 3

T or F: Wavelength (lamda) is the distance betweeen two different points on successive waves.

Answer 3

False, Identical points

Question 4

The frequency (Nu) is the number of waves that pass through a particular point in ____ second(s).

Answer 4

1

Question 5

________ is the vertical distance from the midline of a wave to the peak or trough.

Answer 5

amplitude

Question 6

The speed of a wave (u) =

Answer 6

its wavelength x frequency

Question 7

1 hertz = ?? cycle(s)

Answer 7

1

Question 8

frequency is measure in?

Answer 8

hertz

Question 9

an ____________ wave has an electric field component and a magnetic field component.

Answer 9

electromagnetic

Question 10

T or F: The electric and magnetic components in an electromagnetic wave have the same wavelength and frequency, and the same speed. but they travel in mutually perpendicular planes.

Answer 10

True

Question 11

What is the emission and transmission of energy in the form of electromagnetic waves?

Answer 11

Electromagnetic radiation

Question 12

the wavelength of electromagnetic waves is usually given in ________.

Answer 12

nanometers (nm)

Question 13

T or F: sound waves travel 3.00 x 10*8 meters per second or 186,000 miles per second in a vacuum.

Answer 13

False, Electromagnetic waves. and it would be the speed of light.

Question 14

1 nanometer (nm) = ???? m

Answer 14

1 x 10*-9 m

Question 15

T or F: the higher the frequency, the more energetic the radiation.

Answer 15

true

Question 16

Ultra-violet radiation, X rays, and gamma rays are (high/low) energy radiation.

Answer 16

High

Question 17

Gamma rays are a result of chnages with the ______ of the atom.

Answer 17

nucleus

Question 18

The failure in the short-wavelength region is called…

Answer 18

ultraviolet catastrophe

Question 19

The smallest quantity of energy that can be emitted (or absorbed) in the form of electromagnetic radiation is called….

Answer 19

quantum

Question 20

The energy (E) of a single quantum of energy =

Answer 20

h (planck’s constant) and v (the frequency of radiation)

Question 21

Planck’s constant (h) =

Answer 21

6.63 x 10*-34 Jouls per second

Question 22

the ___________ is a phenomenon in which electrons are ejected from the surface of certain metals exposed to light of at least a certain minimum frequency called the __________ frequency

Answer 22

photoelectric effect, threshold

Question 23

photons are the the particles of _________

Answer 23

light

Question 24

KE (kinetic energy of the ejected electron) + W (Work function) =

Answer 24

hv