Vibraciones y ondas: vibraciones

The video tutorial explains the concept of vibration using a rubber band as an example. It describes how vibrations occur when the rubber band stretches and releases, moving back and forth rapidly. The tutorial also provides examples of vibrations in everyday life, such as the ground shaking when a train passes or a building swaying in strong winds. Additionally, it highlights the role of energy in initiating vibrations, using a guitar string as an example to illustrate how energy is required to start the movement.

What happens to a rubber band when it is stretched and then released?

• It stays in place.

• It moves rapidly back and forth.

• It breaks immediately.

• It moves slowly.

What is a vibration?

• A movement that stays still.

• A movement in a circular path.

• A movement that goes back and forth.

• A movement that only goes forward.

Which of the following can vibrate?

• A book on a shelf.

• The ground when a train passes.

• A stationary rock.

• A leaf on a calm day.

What is needed to start a vibration?

• A lack of movement.

• A decrease in energy.

• An increase in energy.

• A constant state.

How is energy used in the context of a guitar string?

• To stop its movement.

• To change its color.

• To make it heavier.

• To start its vibration.