U3L1 - Post Flashcard - Light and Quantized Energy

Front

What is the photoelectric effect?

Back

The photoelectric effect is the phenomenon where electrons are emitted from a metal's surface when light of a certain frequency shines on it.

Front

True or False: Rutherford's model explains how electrons are arranged around the nucleus.

Back

False. Rutherford's model does not explain how the electrons are arranged around the nucleus.

Front

What are quanta?

Back

Quanta are small, specific amounts of energy that matter can gain or lose.

Front

What is a prism?

Back

A prism is an optical device that separates sunlight into a continuous spectrum of colors.

Front

How is the wavelength of a wave measured?

Back

The wavelength of a wave is measured from crest to crest.

Front

What is the relationship between frequency and energy of light?

Back

The energy of light is directly proportional to its frequency; higher frequency light has more energy.

Front

Define wavelength.

Back

Wavelength is the distance between successive crests of a wave.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 3.00 x 10^8 meters per second.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, including visible light, radio waves, and X-rays.

Front

What is the significance of the quantum theory?

Back

Quantum theory explains the behavior of matter and energy on very small scales, such as atoms and subatomic particles.