Lab Tools
Laboratory tools are used to make measurements and gather data in lab. Knowing how
to use these tools is important for making precise and accurate measurements.
Common laboratory tools include a triple beam balance, graduated cylinder, test
tube, beaker, measuring cup, ruler, spring scale, compass, microscope,
binoculars, hand lens, telescope, stopwatch, and thermometer.
Triple Beam Balance
A triple beam balance is used to measure the mass of
solid objects. It has three beams that each measure mass to a different unit place
(ones, tens, hundreds). Units of mass include milligrams, grams, and kilograms.
Graduated Cylinder
A graduated cylinder is used to measure the volume of liquids in milliliters
(mL) or liters (L). It is read by looking at the very bottom of the curve of liquid in the
cylinder. This curve of liquid is called a meniscus.
Test Tube
A test tube is a long, narrow type of glassware in which liquids can be stored
and heated. Test tubes have round bases and are stored in test tube racks or mounted
on test tube stands.
Beaker
A beaker is a type of glassware. It can be used to store liquids,
heat liquids, and measure the volumes of liquids. Beakers have broad, flat bases.
Beakers usually measure liquid volumes in milliliters (mL).
Measuring Cup
A measuring cup is used to measure the volume, or amount, of a
liquid. To measure how much liquid is in a measuring cup, look at the lines in the front
and see what line the top of the liquid is at. Measuring cups can measure volume in
metric units, such as milliliters (mL), or in U.S. system units, such as ounces and cups.
Ruler, Meter Stick, and Tape Measure
Rulers, meter sticks, and tape measures are used to
measure length. These tools usually have two edges—one that measures in metric
units (millimeters, centimeters, and meters), and one that measures in U.S. system
units (inches and feet).
Spring Scale
A spring scale is used to measure the weight of an object, which is the force of
gravity acting on it. A spring scale is used by attaching an object to the hook at the end
of the scale, then the weight is displayed on the tube of the scale in Newtons (N) or
pounds (lb). Spring scales can also be used to measure the force needed to move an
object.
Compass
A compass is a tool that detects magnetic fields. When no local
fields are present, a compass will detect Earth's magnetic field. The arrow of a compass
generally points north, so a person using a compass can tell which direction (north,
south, east, or west) he or she is facing.
Microscope
A microscope is used to view objects that are too small to be seen with
the naked eye, such as cells.
Binoculars
Binoculars are used for seeing objects that are distant, but not
as far away as space.
Hand Lens
A hand lens is used to look at objects up close. It makes objects
appear larger.
Telescope
A telescope is used to view objects that are very far away,
such as planets and moons.
Stopwatch
A stopwatch is used to measure time in seconds and minutes.
Thermometer