An educated guess or testable prediction is a

• theory

• law

• hypothesis

• conclusion

The _________________________ is the base metric unit of mass.

• Liter

• meter

• gram

Laws are usually mathematically defined.

• True
• False

Tags

NGSS.HS-PS1-7

NGSS.HS-PS2-1

NGSS.HS-PS2-2

NGSS.HS-PS4-1

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

• law
• theory
• method
• variable

If I increase the amount of fertilizer a bean plant receives, the plant will grow taller.

• Hypothesis

• Theory

• Law

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Species on earth have changed over time because some organisms are more likely to survive and to reproduce, passing favorable traits to their offspring.

• hypothesis

• theory

• law

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-4

Once a theory has been tested and confirmed it cannot be changed.

• True
• False

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-PS2-1

A scientific theory can become a scientific law with enough evidence

• True

• False

Base unit of a distance in the metric system is

• Liter

• Meter

• Mile

• Foot