Doppler Effect/Red Shift/Blue Shift

Front

What is the Doppler Effect?

Back

The Doppler Effect is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source.

Front

What does a blue shift indicate about an object's movement?

Back

A blue shift indicates that an object is moving towards the observer.

Front

What does a red shift indicate about an object's movement?

Back

A red shift indicates that an object is moving away from the observer.

Front

What color corresponds to the longest wavelength in the electromagnetic spectrum?

Back

Red corresponds to the longest wavelength in the electromagnetic spectrum.

Front

What is the significance of absorption lines in a star's spectrum?

Back

Absorption lines indicate the presence of specific elements in a star's atmosphere, as they absorb certain wavelengths of light.

Front

How do we describe the shift in wavelength when an object moves away from the observer?

Back

The shift in wavelength is described as a red shift.

Front

What is the relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as wavelength increases, frequency decreases and vice versa.

Front

What is the electromagnetic spectrum?

Back

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

Front

What is the formula for calculating the Doppler shift?

Back

The formula for calculating the Doppler shift is: f' = f (v + vo) / (v - vs), where f' is the observed frequency, f is the source frequency, v is the speed of sound in the medium, vo is the speed of the observer, and vs is the speed of the source.

Front

What role does the speed of light play in the Doppler Effect?

Back

The speed of light is the constant speed at which electromagnetic waves travel, and it is crucial for calculating shifts in frequency and wavelength due to relative motion.