Science Year 4: Human response to stimuli

Front

What is a stimulus?

Back

A stimulus is anything that causes a reaction or response in an organism.

Front

What is a response?

Back

A response is the action or change in behavior that occurs as a result of a stimulus.

Front

What are the five human senses?

Back

The five human senses are sight, hearing, touch, taste, and smell.

Front

How do humans respond to sound stimuli?

Back

Humans may turn their head, cover their ears, or move away from loud sounds.

Front

What happens when you touch something hot?

Back

You quickly pull your hand away to avoid getting burned.

Front

What is the role of the nervous system in responding to stimuli?

Back

The nervous system processes information from stimuli and sends signals to the body to respond.

Front

What is an example of a visual stimulus?

Back

Seeing a bright light or a moving object.

Front

What is an example of a sound stimulus?

Back

Hearing thunder or a dog barking.

Front

What is the purpose of a reflex action?

Back

A reflex action is an automatic response to a stimulus that helps protect the body.

Front

What is the difference between voluntary and involuntary responses?

Back

Voluntary responses are controlled by the brain, while involuntary responses happen automatically without conscious thought.