Question

how do models help build scientific knowledge? models are used to show ideas and objects in science. they are also used to help scientists learn new things. scientific theories models are often used to help explain scientific theories. a theory is an explanation for many hypotheses and observations. theories are supported by many tests and observations. a theory can explain why something happens and can predict what will happen in the future. scientists use models to help them look for new scientific information. the new information can support a theory or show that it is wrong. this is all part of science. as scientists make new observations, new theories are developed over time. new theories replace old theories that are shown to be wrong. the figure below shows an old model of the atom and the new model that replaced it. these drawings are both models of an atom. the old model shows what scientists understood about atoms in 1897. the new model replaced the old model as scientists made more observations. scientific laws when a model correctly predicts the results of many different experiments, a scientific law can be made. in science, a law is a summary of many experimental results and observations. it tells you how things work. a law is different from a theory. a law tells you only what happens, not why it happens. an example of a scientific law is the law of conservation of mass. it says that in a chemical change, the total mass doesnt change. the law doesnt explain why this happens or make any predictions. it tells you only what happens during any chemical change. 4. define what is a scientific theory? 5. explain why might scientists come up with a new theory?

Explanation:

1. A scientific theory is an explanation for many hypotheses and observations, supported by evidence. It can explain why something happens and predict future events.
2. Scientists might come up with a new theory when they make new observations that the existing theory cannot explain, or when new information is discovered that either supports or contradicts the current theory.

Answer:

1. A scientific theory is an explanation for many hypotheses and observations, supported by evidence. It can explain why something happens and predict future events.
2. Scientists might come up with a new theory when they make new observations that the existing theory cannot explain, or when new information is discovered that either supports or contradicts the current theory.