Question

2. in a homes central heating system, when the room temperature measured by the thermostat reaches a set value, the thermostat sends a message to the heater, and the heater switches off. these actions are an example of,
a. a model
b. feedback
c. input.
d. a process***

3.which of the following statements about models is true?
a.scientist use models to understand how systems work
b.if an inaccurate scale model is used to create a structure, the actual structure will have problems****
c. a diagram is one example of a scientific model
d.all of these are true

4.making models involves creating representations of complex objects or processes to help people study and understand things that cannot be observed directly
a. true
b.false****

Answer 1

Hmmmm. You missed all of them.

Answer 2

2. Feedback

3.all are true

4.true

Answer 3

Thank you