Laws and Theories

Which statement does NOT describe a scientific theory?

• A scientific theory can never be proven

• A scientific theory is supported by facts

• A scientific theory eventually becomes a fact

• A scientific theory is a generally accepted explanation

In 1859, Charles Darwin described a model of how living things change over time. He described this model and the evidence that supported it in a book called On The Origin of Species. Which scientific term is used to describe a testable model that seeks to explain natural phenomena?

• data

• hypothesis

• theory

• observation

A(n) __________ is a rule that describes a pattern in the natural world.

• theory

• hypothesis

• scientific law

• observation

Tags

NGSS.HS-PS2-1

Scientists form _________ hypothesis to answer questions.

• accurate

• short

• mathematical

• testable

Tags

NGSS.MS-LS1-5

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-ESS2-7

How can laws and theories be expressed?

• By experiments
• Groupings
• Mathematical Equations

Tags

NGSS.HS-PS2-4

A scientific theory...

• is based on lots of evidence
• is not valid
• is not reliable
• has not been tested many times

Tags

NGSS.HS-PS4-4

A scientific ____________ is a statement that describes what always happens under certain conditions in nature.

• law
• theory
• method
• variable

Tags

NGSS.HS-PS2-1

Theory or law? The cell _________ of living things: living things are made of cells, which explains how things grow and live.

• Theory

• Law

Tags

NGSS.MS-LS1-1

Theory or Law? Kepler's ______ of Planetary Motion: how planets orbit the sun. Shows what happens with planets.

• Theory

• Law

Tags

NGSS.HS-ESS1-4