How We Study Science Tools/ Equipment

1. Compound microscope- see worksheet Microscope slide Cover slip Glass slides are used for viewing items under a microscope and/or on which you place substances for closer study.

Fill in the table on your worksheet. What’s my power? To calculate the power of magnification, multiply the power of the ocular lens by the power of the objective. What are the powers of magnification for each of the objectives we have on our microscopes? Fill in the table on your worksheet.

Comparing Powers of Magnification We can see better details with higher the powers of magnification, but we cannot see as much of the image. Which of these images would be viewed at a higher power of magnification?

Ocular lens (Eyepiece) Body Tube Nosepiece Arm Objectives Stage Stage Clips Coarse Adjustment Diaphragm Fine Adjustment Light Always carry a microscope with one hand holding the arm and one hand under the base. Base

Triple Beam Balance Used to find the mass of an object

Graduated cylinder Used to make accurate measurements of volumes.

Medicine Dropper/Eye dropper Used to move small amounts of liquid. Many droppers have measurement lines for exact measurement of liquids.

Beaker Beaker Beakers are the most versatile glassware in the lab and can be used for just about anything. The volume graduations on beakers should be used only for "ballpark" estimates.

Rubber stopper

Funnel When lined with filter paper, used to filter suspended solids from a liquid. Used to move liquids from a large receptacle into a smaller one.

Test Tube Used for heating solutions and for performing ordinary reactions. Test Tube Rack

Test tube brush

Test tube rack

Test tube holder

Petri dish

Lined with agar (a nutrient broth) to grow bacteria

Safety goggles/ Safety glasses Used to protect eyes during experiments

Thermometer

Hot hands

Dissecting pan

Dissecting pins Dissecting needle Dissecting scissors Forceps Scalpel