Which of the following is an example of how a scientist might use a model? a. a stopwatch is used to time the rate of a chemical reaction. b. a microscope is used to magnify a group of cells on a slide. c. a wrench is used to tighten a nut on a piece of wood. d. the end of a slinky is moved vertically up and down to simulate a wave.
A. Marbles placed inside a hollow sphere are used to describe protons in a nucleus.
it would be A because the other options are just the tools used in an experiment and A is actually using other objects
The end of a slinky is moved vertically up and down to simulate a wave.
I do believe the answer is:D.
The correct answer is option The end of a slinky is moved vertically up and down to simulate a wave.
The scientific model is the visual description of the ,ideas or a phenomenon, which cannot be experienced directly. The movement of the waves cannot be experienced directly. So, the scientist or a person use slinky to vertically up and down to describe the nature of waves.
The correct option would be
A: Marbles placed inside a hollow sphere are used to describe protons in a nucleus.
Models are artificial representations used to show some phenomena or features of the real world.
In this case, it has been used a sphere and marbles, to represent the fact that nuclei of atoms contain inside some smaller partilces which are the protons.
In science, model refers to a representation of idea, object or process which is used to describe a phenomenon that can not be directly observed.
In option A, it can be seen that protons that are inside the nucleus of an atom can not be seen with the naked eyes, that is why scientists used models to represent them.
yes the answer is total mass in unchanged : )