science 2.0

• body tube is the part that connects the eyepiece to the objective lenses
• iris diaphragm controls the amount of light passing through the opening of the stage
• fine adjustment knob moves the body tube to focus the high power lens.
• stage clip holds the slide in proper place.
• stage is the platform where the slide under observation is placed.
• condenser focuses the light on the specimen under observation.
• base provides basal support for the microscope.
• coarse adjustment moves the body tube up and down to focus the specimen.
• arm supports the tube of the microscope and connects it to the base of the microscope.
• there are two element with the exact same properties false
• calcium is macro mineral is the key constituent of bones and teeth
• sulfur is a macro mineral promotes healthy skin , hair , nails
• iron is a trace mineral is needed for oxygen transfer in the blood stream.
• zinc is a trace mineral helps your body make proteins and in healing wounds.
• what are the eight noble metals platinum , iridium , ruthenium , silver , rhodium , gold , aluminum
• the inclination joint is the part that allows the upper part of the microscope to be bent.
• the pillar is the part that supports the upper parts of the microscope.
• the base is a horse show like that anchors the microscope firmly on the table
• the dust shield is the top part of the revolving nose piece that protects objectives from dust.
• the condenser consist of condensing lens that direct the maximum amount of light upon an object.
• the iris diagprham is a flat disc located beneath the condenser it has an adjustment aperture or opening which may be reduced or enlarged to any size by adjusting its lever
• the lever is the rod like part that regulates the iris diaphragm beneath the condenser.
• mechanical parts are used to support and move parts of the microscope.
• the stage is the platform where the slide is place it has the stage clips which hold that slide with the specimen in place.
• the adjustment knobs are the parts that bring the object into focus so that the view of the specimen appears sharp and clear.
• the coarse adjustment knobs is a big round knob used to focus the specimen at 10X (LPO)
• the fine adjust meant knob is a small round knob used to focus the specimen at 40X or 60X (HPO) the specimen is initially focused at lower magnification.
• the draw tube is a tube fitted inside the upper end of the body that houses the ocular lens. it is attached to the body tube.
• the body tube is the part that holds the draw tube this tube connects the eye pice to the objectives.
• the revolving nosepiece is the part where the objectives are attached and enables them to be positioned at the desired place.
• objective lenses are the most important optical part of the microscope.
• low power objective (LPO) is shorter that the other objective lenses.
• high power objectives (HPO) is a long tube.
• oil immersion objective is a special type of objective lens which may be long or short to increase the resolution of the microscope.
• illuminating parts are used to focus or direct light to the slide.
• a mirror collects and reflects light from an external light source.
• the ocular or eyepiece is a lens attached to the upper end of the microscopes.
• give at least 4 macro minerals. calcium , sodium , chloride , potassium
• give at least 3 trace minerals. iron , fluoride , iodine
• oxygen is considered one of the most important elements needed by living things to sustain life.