Models

A _____________________ is something that scientists use to represent an object or process

• mass

• matter

• model

• weight

Tags

NGSS.MS-LS1-2

NGSS.MS-PS1-1

Sal is studying the solar system. He makes a physical model using different-sized foam balls to represent the planets. Which best describes why a physical model is a useful tool for studying the solar system?

• Solar system models can be used to study a system that is too big to study directly.

• A model of the solar system eliminates the need for scientists to study the solar system directly.

• A model of the solar system provides an exact replica of the actual solar system, so scientists can experience what each planet is like.

• A model of the solar system can provide more data about the solar system than direct observations.

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

Creating representations of complex objects or processes.

• evaluating

• making models

• scientific investigation

Tags

NGSS.MS-ETS1-4

NGSS.MS-LS1-2

NGSS.MS-LS2-3

Pick the reasons why we use models

• Models are expensive

• Models help you understand complex systems

• Models are used when systems are too expensive or impossible to use

Tags

NGSS.MS-ESS2-1

NGSS.MS-ETS1-4

NGSS.MS-LS2-3

Making models involves creating representations of complex objects or processes to help people study and understand things that cannot be observed directly.

• True

• False

Tags

NGSS.MS-ETS1-4

NGSS.MS-LS1-2

NGSS.MS-LS2-3

Which of the statements are INCORRECT about models.

• Models must be exactly like what is being modeled.

• Models communicate information.

• Models can be constructed.

• Models can be drawings with labels.

True or False--A model can never be revised.

• true

• false

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

This was the first model of the atom ever proposed. It was simple and described atoms as tiny spheres that could not be broken down into smaller pieces.

• Democritus's model of the atom

• The "Plum Pudding Model" of the atom

• The "Rutherford Model" of the atom

• The "Quantum Mechanical Model" of the atom

This is the most complete and current model of the atom. It consists of 61 elementary particles. Electrons are located in complex orbitals.

• The "Quantum Mechanical Model" of the atom

• The "Rutherford Model" of the atom

• The "Plum Pudding Model" of the atom

• The "Bohr Model" of the atom

Tags

NGSS.MS-PS1-1

Which of the following is a primary reason for using models in scientific research?

• To provide an exact replica of the object or process

• To simplify complex systems for better understanding

• To replace the need for experiments

• To ensure all variables are controlled

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS2-1

NGSS.MS-LS2-3