Case Study: The Minneapolis Bridge Failure

A(n) __________ experiment is a type of scientific investigation that tests how one factor affects another.

• designed

• controlled

• experimental

• related

When scientists conduct an experiment, they must identify factors that can affect the experiment’s _________.

• controls

• outcome

• variable

• swag

Tags

NGSS.MS-PS2-2

Without a(n) ________, it is impossible to know whether your experimental

observations result from the variable you are testing or some other factor.

• control

• variable

• outcome

• thermometer

Tags

NGSS.MS-PS2-2

Using the reassembled bridge, investigators found helpful pieces of ______________ that were needed to determine where breaks occurred.

• links

• predictions

• inquiry controls

• physical evidence

Reports on the bridge collapse can help prevent future bridge failures. This fact shows why it is important for scientists to ____________ their results.

• model

• control

• publish

• destroy

Tags

NGSS.MS-ESS3-2

Because ______________ is common in scientific research, scientists are careful to document any changes in their procedures and any unanticipated factors or accidents. They are also careful to document any uncertainty in their measurements.

• error

• delay

• accuracy

• fear

Tags

NGSS.MS-PS2-5

A(n) ______________ variable is a factor in an experiment that is changed by the investigator.

Tags

NGSS.MS-PS2-2

_______________ data use words to describe an observation.

The factor that a scientist observes or measures during an experiment is

a(n) ____________________ variable.

______________ data use numbers to describe an observation.

Tags

NGSS.MS-PS3-1