El efecto Doppler: variación de frecuencia por movimiento

The video tutorial explains the concept of wave movement, focusing on how an observer perceives changes in frequency, particularly with acoustic waves. It uses the example of a moving train to illustrate how frequency variation affects pitch. The tutorial also extends the concept to light waves, explaining how the toppler effect helps deduce the speed and direction of distant stars and galaxies.

What is the Doppler Effect primarily caused by?

• The rotation of the Earth

• The movement of an object relative to an observer

• The change in temperature

• The gravitational pull of the Earth

How can the Doppler Effect be observed with sound waves?

• By detecting a change in speed

• By feeling a change in temperature

• By observing a change in pitch

• By noticing a change in color

What happens to the pitch of a sound as a train approaches an observer?

• The pitch fluctuates randomly

• The pitch increases

• The pitch remains the same

• The pitch decreases

What can be deduced by measuring the Doppler Effect of light from distant galaxies?

• The temperature of the galaxies

• The age of the galaxies

• The size of the galaxies

• The speed and direction of the galaxies

Which type of waves does the Doppler Effect apply to?

• All types of waves

• Only light waves

• Only water waves

• Only sound waves