F2 IS 2nd Term WS10 Answers

11.1    Senses and sense organs

i      Words to know:

	English term	Write the words again	Chinese term
1	Sense		感覺
2	Detect		探測
3	Stimuli		刺激
4	Respond		反應
5	Sense organ		感覺器官
6	Receptor		感受器
7	Sensitive		敏感
8	Brain		腦
9	Nerve		神經
10	Interpreted		詮釋

i      Fill in the blanks:

1       We have different senses such as sight, hearing, smell, taste and touch.

2       Changes in the environment are called stimuli. Living things can detect and respond to them.

3       By responding to stimuli, living things can find food, mates, shelters and escape from danger.

4       We have different sense organs like eye, ear, tongue, nose and skin. They contain special kinds of cells called receptors which are sensitive to particular kinds of stimuli.

5       When the receptors detect stimuli, they send signals to our brain through nerves, which are then interpreted to give us senses.

i      Fill in the table:

Sense organ	Stimuli	Senses produced
Eye	Light	Sight
Ear	Sounds	Hearing
Nose	Chemicals in air	Smell
Tongue	Chemicals in food or drinks	Taste
Skin	Things in contact with the skin	Heat/cold, touch, pain, pressure