Scientific Knowledge

Scientific theories are based on

• general assumptions of how systems work.
• mathematical principles that can be proven true.
• large amounts of data collected over time.
• observations from within only one scientific discipline.

Scientific theories do not change once they have been written down.

• True
• False

Which of these explain how a natural phenomenon works or happens?

• theory

• law

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS3-1

NGSS.MS-PS2-4

Which of these describes a natural phenomenon or relationship that always occurs under specific conditions

• theory

• law

Tags

NGSS.MS-PS1-5

NGSS.MS-PS2-1

Which of these can be represented mathematically and provide no explanation why a phenomenon occurs?

• theory

• law

Tags

NGSS.HS-PS2-4

NGSS.HS-PS4-1

Scientists create both scientific theories and scientific laws as they make observations and conduct experiments about the natural world. Which of the following statements most accurately compares the difference between scientific theories and scientific laws

• science laws are based on evidence while science theories are not

• science theories involve only biology, while laws involve all types of science

• science theories involve mathematical equations, while science laws are based on observations

• science theories are ideas that explain natural events, while science laws predict what will happen in a natural event.

Before a scientific theory is accepted and supported, it has

• been tested by only one scientist.

• been published in scientific journals.

• been tested many times by different scientists.

• been approved by the International Committee of Scientists.

Tags

NGSS.HS-PS1-2

Theory or Law???  Changes with new observations.

• Theory
• Law

What is the independent variable in the following experiment? Plants grow more when exposed to classical music

• Exposure to classical music
• height of plant
• Normal exposure to noises with no music

Tags

NGSS.MS-LS1-5

What is the dependent variable in the following experiment? Plants grow more when exposed to classical music

• Exposure to classical music
• Normal exposure to noises with no music
• height of plant

Tags

NGSS.MS-LS1-5