PMA Review Science

Science MUST be which of the following?

• flexible

• constant

• testable

• observable

Tags

NGSS.MS-PS1-2

When you repeat your own experiment

• replication

• repetition

When someone else repeats your experiment

• repetition

• replication

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

A statement that describes the way the world works under certain conditions

• empirical evidence

• scientific theory

• scientific law

• scientific method

Tags

NGSS.MS-PS2-4

An explanationof nature that is well-supported and widely accepted

• empirical evidence

• scientific theory

• scientific law

• scientific method

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

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