Which of the following is an example of how a scientist might use a model?

question 5 options:

the end of a slinky is moved vertically up and down to simulate a wave.

a wrench is used to tighten a nut onto a piece of wood.

a microscope is used to magnify a group of cells on a slide.

a stopwatch is used to time the rate of a chemical reaction.

An example of how a scientist might use a model is by moving the end of a slinky vertically up and down to simulate a wave.

The phenomena that cannot be experienced directly can be described and explained by an idea, an object, or even a process or a system and is called a model in science. Both in research as well as when communicating explanations, models are central to what scientists do.

To explain or predict what may happen in particular circumstances, one or mode model may be proposed by scientists. From providing a way of explaining complex data to presenting as a hypothesis, these are just some of the variety of uses of models. 

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure  

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

the link still does not work even when adding it to the url bar

explanation: