2023-24 Physical Science Chap 1C "Study Questions"

Which of the following is NOT a reason why scientists use the SI instead of the US customary measurement system?

• The SI has easily reproducible standards

• The SI has many units for each dimension, while the US measurement system has only one

• The SI is used almost worldwide

• Unit conversions are easier with the decimal-based SI

Accuracy in measurement compares a measurement to _____________________________________.

• the decimal place of the instrument

• the degree of exactness

• the expected value

• the repeatability of the measurement

The decimal place to which a scientist makes a measurement can be referred to as ___________________________.

• accuracy

• precision

• both accuracy and precision

• neither accuracy or precision

Conversion factors always equal 1.

• True

• False

Scientists collect quantitative data by using instruments to take measurements

• True

• False

Tags

NGSS.MS-PS2-2

When taking measurements, scientists list all the known digits and then two estimated digits

• True

• False

Meter (m)

• the SI fundamental unit of electric current

• the SI fundamental unit of time

• the SI fundamental unit of mass

• the SI fundamental unit of length (or distance)

kilogram (kg)

• the SI fundamental unit of electric current

• the SI fundamental unit of time

• the SI fundamental unit of mass

• the SI fundamental unit of length (or distance)

Tags

NGSS.MS-PS3-4

second (s)

• the SI fundamental unit of electric current

• the SI fundamental unit of time

• the SI fundamental unit of mass

• the SI fundamental unit of length (or distance)

kelvin (K)

• the SI fundamental unit of temperature

• the SI fundamental unit of the amount of a substance

• the SI fundamental unit of the intensity of a light source

• the SI fundamental unit of speed

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4