Year 9 Science · Unit 1 · Lesson 2
Foundation Worksheet
Learning Goals
Fill the gap
Choose the correct word from the word bank to complete each sentence. Two words will not be used.
A change that the body can detect, such as a rise in core temperature, is called the .
Thermoreceptors detect that change, so they act as the . The then compares the reading to the set point and decides which way the correction must go.
The sweat glands carry out the correction, so they are the . Because sweating makes the original rise smaller rather than larger, this loop is an example of .
True or False? Fix the false ones
Circle T or F for each statement. If the statement is false, rewrite it correctly on the line below.
Sweating is the stimulus in the body-temperature loop.
Correct it:
The hypothalamus acts as the control centre in the body-temperature loop.
Correct it:
A loop can still correct a change even if nothing detects that change.
Correct it:
"Negative" in negative feedback means the response opposes the change that triggered it.
Correct it:
1. A person steps out of a pool into cold wind and starts to shiver. Name the stimulus, the receptor, the control centre, the effector and the response for that case.
2. Explain why the sweating eases off once a person has cooled down. Refer to what happens to the stimulus.
Wrap Up
In one sentence, what was the main idea of this lesson?