GWHS: Photon Energy_2024

Front

What happens to electrons when atoms absorb energy?

Back

Electrons move to higher energy levels.

Front

What do electrons do when they return to lower energy levels after absorbing energy?

Back

They lose energy by emitting light.

Front

What is the formula to calculate the energy of a photon?

Back

E = h * f, where E is energy, h is Planck's constant, and f is frequency.

Front

What is the value of Planck's constant (h)?

Back

6.626 x 10^-34 J·s.

Front

What is the relationship between frequency and energy of a photon?

Back

Energy is directly proportional to frequency; higher frequency means higher energy.

Front

What is the speed of light in a vacuum?

Back

Approximately 3.00 x 10^8 m/s.

Front

What is a wave in the context of physics?

Back

A temporary disturbance that transfers energy from place to place.

Front

Why do we see lightning before we hear thunder during a storm?

Back

Light waves travel faster than sound waves.

Front

What is the energy of light with a frequency of 5x10^14 Hz?

Back

3.3 x 10^-19 J.

Front

What is the difference between mechanical waves and electromagnetic waves?

Back

Mechanical waves require a medium to travel, while electromagnetic waves do not.