Flashcards
LIFE SCIENCE 1
Cards in this deck (18)
- 1Life ScienceChapter 1 :SCIENTIFIC PROCESSES
- 2PROCESS SKILLStechniques and the ability to use our senses and acquired scientific knowledge to gain an understanding about scientific investigation.
- 3OBSERVATIONan everyday process of noticing what is around us.
- 4MEASURINGinvolves observing and taking measurable data by comparing the known units of measurement with unknown units .
- 5ESTIMATINGinvolves the use of senses to observe and compare any object or observation with what has been previously observed or experienced.
- 6PREDICTINGforetelling the likely result before an experiment is carried out.
- 7INFERRINGthe process of drawing conclusions based from observed data.
- 8COMMUNICATINGprocess whereby we share information our findings.
- 9DRAWINGSdrawings are used to communicate findings
- 10MAGNIFICATIONextent or ratio at which the size of the actual object has been increased or reduced.
- 11CALCULATION OF MAGNIFICATIONMagnification=size of image/drawing mm is divided by the actual size of specimen /object mm
[the ratio magnification is always expressed with an x in front of the figure] - 12A MICROSCOPEan instrument used to observe very small objects or organisms that are difficult to see when using our naked eyes.
- 13THE EYE PIECEthe eye piece is the upper part of the microscope where one looks through to see the image of the object .
- 14BODY TUBEthe body tube is a long tube holding the eye piece.
- 15THE NOSE PIECE [TURRET]the lower end of the body tube which holds three small tubes of varying lengths called objectives.
[low magnification= x5]
[medium magnification = x10]
[high magnification= x40] - 16THE STAGEthe stage is widened platform where a glass slide with a specimen is placed.
- 17ADJUSTMENT WHEELS [FOCUSING KNOBS]two knobs that include the coarse adjustment knob and the fine adjustment knob
- 18THE PRINCIPLES OF MAGNIFICATION OF A MICROSCOPEeye piece lens x objective lens = total magnification