NOS Exam

explanation of observations or events that is based on knowledge gained from many observations and investigations is a

• scientific theory

• scientific law

• observation

• explanation

state of what will happen next in a sequence of events is a

• prediction

• description

• science

• technology

Tags

NGSS.MS-LS2-2

truss bridge can span long distances and are strengthened by a series of ----- called trussess

• interconnecting traingles

• concrete beams

• simple beams

Which of the following is a way that scientists communicate their results to others?

• speak at a conference

• write scientific articles

• all of the above

A(n) ____ is used to measure temperature.

• anemometer

• barometer

• thermometer

Scientists analyze results by using which tool(s) to help recognize patterns?

• graphing and tables

• models and calculations

• speaking at conference

Tags

NGSS.MS-PS3-1

The three branches of science are ____, Earth, and physical.

• space

• life

• physics

When you are skeptical of scientific issues in the media, what are you doing?

• a. using critical thinking to question information presented

• b. accepting the information as truthful

• d. using your bias to form opinions

Tags

NGSS.HS-ETS1-3

What should a scientist do first if a hypothesis is NOT supported?

• more testing

• modify and revise the hypothesis

• more repetition

A scientific theory is a well-tested explanation for a wide range of observations or experimental results. A hypothesis is a possible answer to a question. When does a hypothesis become a scientific theory?

• a. after the hypothesis is first formed by a scientist

• c. after the hypothesis has been confirmed through extensive testing

• d. after a hypothesis is shown to be correct in one experiment