Electromagnetic Spectrum 22-23

The number of wave peaks that pass a point per second is called the

• frequency
• amplitude
• wavelength
• hertz

When the electrons in an atom move from the ground state into an excited state, they will initially

• release energy and moves to a lower energy level
• absorb energy as they fall to a lower energy level
• absorb energy and move to a higher energy level
• release energy and move to a higher energy level

The height of a wave is called the

• frequency
• amplitude
• wavelength
• hertz

The electromagnetic radiation also known as heat (thermal energy) is ___________.

• radio waves
• infrared rays
• gamma rays
• x-rays

The type of electromagnetic radiation used in all electronic communications like cell phones and wi-fi is _______________________.

• x-rays
• radio waves
• ultraviolet radiation
• microwaves

Niels Bohr studied the line emission spectrum of this element: _________________.

• carbon
• helium
• hydrogen
• oxygen

Frequency is measured in

• frequency
• amplitude
• wavelength
• hertz

True or False: Orange wavelengths of light have shorter wavelengths than blue wavelengths.

• True
• False

A hydrogen atom in its ground state has its electron….

• close to the nucleus in the first energy level.
• far from the nucleus in an outer energy level.
• in the nucleus with the protons and neutrons

The color with the lowest energy in the visible spectrum is _________.

• violet
• green
• yellow
• red