The video explains how our ears are constantly listening, even during sleep. The brain selectively ignores sounds to allow us to sleep unless it perceives a threat, such as a fire alarm, which prompts us to wake up.

Why are our ears constantly listening, even when we are asleep?

• To keep us awake

• To help us dream

• To detect any potential danger

• To ensure we can hear our alarm clock

What does the brain do to help us sleep?

• It amplifies all sounds

• It ignores all sounds

• It selectively ignores sounds

• It makes us deaf

Under what condition does the brain decide not to ignore sounds?

• When the sound indicates danger

• When the sound is loud

• When the sound is familiar

• When the sound is soothing

What is an example of a sound that the brain will not ignore during sleep?

• A fire alarm

• A whisper

• A gentle breeze

• A ticking clock

How does the brain's response to sound help us in emergencies?

• It makes us sleep deeper

• It wakes us up to respond

• It calms us down

• It makes us ignore the sound