Question

mass grams electronic scale
volume liters graduated cylinder (liquid) or metric ruler (square) or using displacement method
length meters metric ruler
time seconds watch
metric prefix scale
t tera 10¹² g giga 10⁹ m mega 10⁶ k kilo 10³ (none) 10⁰ m milli 10⁻³ μ micro 10⁻⁶ n nano 10⁻⁹ p pico 10⁻¹²
10² hecto h 10¹ deca da 10⁻¹ deci d 10⁻² centi c
here is a video on how to do unit conversions also known as dimensional analysis.
volume of 15 microliter = liters
length of 1.3 megameter = meter
time from 1.25 minutes = seconds
fill in the table below:
measurement tool unit
mass
length
volume
time
explain why it is important that we use the si unit instead of the english unit. the english unit is in pounds, inches, ounces, etc.

Explanation:

Step1: Convert microliters to liters

Since 1 microliter ($\mu L$) = $10^{- 6}$ liters (L), for 15 microliters, we have $15\times10^{-6}=1.5\times 10^{-5}$ L.

Step2: Convert megameters to meters

Since 1 megameter (Mm) = $10^{6}$ meters (m), for 1.3 megameters, we have $1.3\times10^{6}$ m.

Step3: Convert minutes to seconds

Since 1 minute = 60 seconds, for 1.25 minutes, we have $1.25\times60 = 75$ s.

Step4: Fill in the table

Mass: Electronic scale, grams; Length: Metric ruler, meters; Volume: Graduated cylinder (liquid) or using displacement method, liters; Time: watch, seconds.

Step5: Explain SI - unit importance

The SI unit is a standardized system. It allows for easy communication and reproducibility of scientific results across different regions and disciplines. English units are non - standardized and vary in usage, which can lead to confusion in scientific and engineering applications.

Answer:

Volume of 15 microliter = $1.5\times 10^{-5}$ liters
Length of 1.3 megameter = $1.3\times 10^{6}$ meter
Time from 1.25 minutes = 75 seconds

Measurement	Tool	Unit
Length	Metric ruler	meters
Volume	Graduated cylinder (liquid) or using displacement method	liters
Time	watch	seconds

The SI unit is important because it is a standardized system for easy communication and reproducibility of scientific results, while English units are non - standardized and can cause confusion.