An explanation based on repeated experimentation and observation.

• law

• theory

• hypothesis

• experiment

Tags

NGSS.MS-PS1-2

A law describes what happens while a theory explains why it happens.

• True

• False

When water falls through a dam and turns ona turbine connected to a generator, electricity is produced. This electricity is often used to light our homes and offices. Which of the following shows, in order, the energy transformations that occur?

• Chemical-Mechanical-Electrical

• Electrical-Light-Mechanical

• Mechanical-Electrical-Light

• Mechanical-Chemical-Light

Tags

NGSS.MS-PS3-5

If a theory is tested enough, it will eventually become a law.

• True

• False

List an example of a theory

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-2

List an example of a law.

Tags

NGSS.MS-PS2-4

Which of the following describes an energy transfromation from chemical energy to light energy?

• A bolt of lightning strikes a tree

• A candle glows as it burns

• A wave crashes against the shore

• A flashlight uses a battery to operate

A fan depends on which of the following energy transformation to operate?

• Electrical to light

• Light to electrical

• Electrical to mechanical

• Mechanical to heat

An educated guess based on observations

• Law

• Theory

• Hypothesis

• Explanation

Energy cannot be

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5