Science Year 4 - Response to stimuli (part 2)

Sekolah Kebangsaan Tropicana
Science Year 4

2.3 Humans respond to stimuli.

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Sekolah Kebangsaan Tropicana
Teacher Arfifah

Sekolah Kebangsaan Tropicana
Teacher Arfifah

Sekolah Kebangsaan Tropicana

Example of stimuli and responses for each sensory organs

Sensory organs Sense Stimuli Response
Eyes Sight Light
Quickly close
Ears Hearing Sound eyes
Nose To smell Smell Cover the ears
Tounge Taste Taste
Pinch nose
Skin Touch Temperature /
texture Spit / face
reaction
Quickly remove
hand / other
parts of body

Teacher Arfifah

Sekolah Kebangsaan Tropicana
Teacher Arfifah

Sekolah Kebangsaan Tropicana

Why human need to respond to
stimuli?

What is the importance of response
to stimuli?

Study some examples in the next
slides

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Sekolah Kebangsaan Tropicana
Sensory organ: skin

Stimuli: sharp thumb tack
Response: quickly lift up his

leg

If he did not respond to
stimuli, he will injured more

seriously.
Teacher Arfifah

Sekolah Kebangsaan Tropicana
Sensory organ: nose

Stimuli: smell of smoke
Response: quickly turn off the switch

The response is Burnt pizza Oven damage
to avoid in fire

Teacher Arfifah Life lost in fire

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Sensory organ: eyes
Stimuli: bright light

Response: quicly close eyes /
cover eyes / look other side

The response is Temporaryly
to avoid blind

Sight discruption
(cannot see

objects clearly)

Teacher Arfifah

Sekolah Kebangsaan Tropicana

So, why human need to respond to stimuli?
What is the importance of response to stimuli?

To avoid To keep our
serious injury.
sensory organs are
To avoid in good condition
property damage.
Could you share
other
importance?
Teacher Arfifah

Sekolah Kebangsaan Tropicana

Task work for this topic

Please do exercises in Science Work
Book (Sasbadi)

Page 17, 18 and 19

Teacher Arfifah

Sekolah Kebangsaan Tropicana
Good luck! Continue learn science

at home.
Do not hesitate to contact me at

012-6103185 for any further
explanation.

Teacher Arfifah