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Learn about tools like microscopes, rulers, balances, and more to discover and measure the world of living things. Uncover the wonders of microorganisms and enhance your scientific knowledge!
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Microorganism(s)Living thing too small to see with the unaided eye.
Compound Light MicroscopeUses pairs of lenses to form a larger image. Ocular Lens Coarse Adjustment Knob Body Tube Fine Adjustment Knob Revolving Nosepiece Low Power Objective Lens Arm High Power Objective Lens Clips Stage Inclination Knob Diaphragm Base Mirror or Light
Electron MicroscopeUses electrons instead of light to make extremely small objects visible.Can magnify up to 2 million times their actual size!
RulerMeasures length or distance. Meter – Longer lengths Centimeter – Shorter lengths Liter – Measure liquids Milliliter – Measure liquids
Pan BalanceMeasures Mass or DensityDensity is mass divided by volume or M D = V
Line GraphsVisual display that uses 2 sets of data, like showing how a variable changes over time.
Bar GraphDisplay that shows data as bars of different length.
X – Axis – Horizontal or bottom edge of a graph.Y – Axis – Vertical or left edge of a graph.
A Sieve – Container with mesh or perforated bottom.Used to filter large particles out of a mixture.
Discussion Question What tools would be useful for studying the planet Mars? Identify some of the things that can be learned by using different tools.
Quiz on Lesson 2 + • Which type of display is useful for showing parts of a whole? A. Line graph B. Bar graph C. Diagram D. Circle graph • Which type of display is BEST for showing how many rainy days there were in each month of one year? A. Line graph B. Bar graph C. Diagram D. Circle graph +
Lesson 2 QuizContinued 3. What is the dependent variable in this graph? A. Mass in g B. Volume in L C. Volume in mL D. The substance tested + 4. Based on the data provided, what do you predict would be the mass of 50 mL of this substance? • 30 g B. 50 g C. 400 g D. 500 g +
Quiz on Lesson 2 Continued + 5. Which of these tools should you use to measure the volume of a fluid? A. Graduated cylinder B. Pan balance C. Computer D. Stopwatch 6. A hand lens can be useful for studying A. The growth of a tree. B. The behavior of a squirrel. C. A bird’s feather. D. The density of a rock. 7. Suppose you want to compare the masses of 2 mineral samples. Which of these tools would you use? A. Pan balance B. Hand lens C. Thermometer D. Graduated cylinder + +
Lesson 2 Quiz 8. You want to know whether adding sugar changes the temperature at which water freezes. Which of the following tools would NOT be useful for studying this? • Pan Balance • Thermometer • Beaker • Microscope +