Lab #2: Measuring with Metric

Why is a standard system of measurement useful across the sciences?

It gives experiments and studies a baseline, as well as helping with accuracy

What tools do we use in the lab for measurement?

Graduated cylinder, balance scale, ruler, yard stick

What’s the metric system?

Kilo(k), hecto(h), deca(da), base unit (m,g,L), deci(d), centi (c, milli(m), ___, ___, micro (weird squiggly u/m), ___, ___, nano (n)

38 mm=___nm

38,000,000 nm

What is the basic metric unit for weight?

Grams (g)

Which metric unit is typically used for larger weights such as human body weight?

Kilograms (kg)

2 g=___ mg

2,000 mg

2 mg= ___ g

0.002 g

What is the standard unit for length?

Meters (m)

Which metric units of measurement are on a typical ruler?

Centimeters (cm) and millimeters (mm)

what is the basic metric unit for volume?

Liter (L)

What is another way 1 ml can be expressed?

1 cm cubed

What tool is used to make accurate measures of liquid volume

Graduated cylinder

What indicator do you look at to find the true volume measurement?

Meniscus

Two metric units of volume are:

Liter (L) and milliliter (ml)

How can you measure the volume of the object with the water in the graduated cylinder?

We will subtract the final volume with the object minus the original volume (before the object was added)

1 ml=___ cm cubed

1

Why is it easier to use the volume method than trying to use length measurement to compare the difference in volume?

It isn’t as accurate with objects that have a particular shape or width

What’s the equation to convert Fahrenheit to celcius?

(__degrees F-32)/1.8

What’s the equation to convert Celsius to Fahrenheit?

(__ degrees C x 1.8) + 32

What’s the boiling point in Celsius?

100 degrees

What’s the boiling point in Fahrenheit?

212 degrees

What’s the freezing point in Fahrenheit?

32 degrees

What’s the freezing point in Celsius?

0 degrees

What system of measurement is used in science?

Metric

19 mm equals how many centimeters?

1.9 m

880 mm equals how many centimeters?

0.88 cm

What instruments are used to observe objects smaller than a millimeter?

Microscope

What instrument is used to measure mass

Balance scale

2700 mg equals how many grams?

2.7 g

3.4 liters equals how many milliliters?

3400 ml

Which temperature scale is used in science?

Celsius

22 degrees C equals how many degrees F?

71.6 degrees F

How would you measure the volume of a solid object such as a rock?

You would take a graduated cylinder with an adequate amount of water in it and record what the starting volume was. Then, you would place the rock into the cylinder and record the volume. Then you would subtract that volume by the original volume to find the final volume of the rock.

Why is it advantageous to use a standard measurement system in all sciences?

Using a standard measurement system in all sciences allows scientists from anywhere in the world to compare data consistently since they use the same units.