PMA 3 Science Review

The diagram shows heat being transferred throughout the atmosphere. Which type of heat transfer is occurring at location B of the diagram?

• convection

• conduction

• radiation

• precipitation

The roller coaster cart has the most gravitational potential energy at position

• Z

• Y

• W

• X

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

Science MUST be which of the following?

• flexible

• constant

• testable

• observable

Tags

NGSS.MS-PS1-2

NGSS.MS-PS2-5

Which of these answers best describes a scientific theory?

• an explanation based on the opinion of a scientist

• a well-supported and widely accepted explanation of nature

• a description of a specific relationship under given conditions

• a statement describing what always happens under certain conditions

Which of these claims best describes how scientific idea change?

• New evidence leads to modification of ideas

• Scientific ideas rarely change, because they are based on extensive evidence

• As a scientific idea changes, it eventually becomes a scientific theory and then a law

• Scientists form opinions based on evidence and decide how the idea should change

What is the energy transformation that occurs in an electric pencil sharpener?

• mechanical energy to electrical energy

• electrical energy to mechanical energy

• radiant energy to sound energy

• chemical energy to mechanical energy

Tags

NGSS.MS-PS3-5

Which object shows an energy transformation from electrical to mechanical?

• 
• 
• 
• 

Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?

• Chemical to light

• Electrical to chemical

• Electrical to light

• Chemical to electrical

The roller coaster cart has the most kinetic energy at position-

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

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