Lab safety and science tools

Grade 6 Science Worksheet

Circle the best answer.

1. Read this first

   Lab card

   Step 1: put on goggles; Step 2: tie back long hair; Step 3: heat water on the hot plate alone; Step 4: record the temperature.

2. 1.

   Which step on Bo's lab card needs fixing?

   • Step 2: long hair can stay loose
   • Step 3: heating needs an adult present
   • Step 1: goggles are not needed
   • Step 4: recording the results can be skipped

3. Lab card

   Step 1: put on goggles; Step 2: sniff the vinegar straight from the bottle; Step 3: pour 20 mL into a cup; Step 4: tell the teacher about any spill.

4. 2.

   Which step on Esme's vinegar lab card needs fixing?

   • Step 3: pour without measuring
   • Step 2: waft instead of sniffing directly
   • Step 4: small spills can be ignored
   • Step 1: take goggles off to see better

5. Lab card

   Step 1: put on goggles; Step 2: tie back long hair; Step 3: if a spill happens, wipe it up quietly and keep going; Step 4: wash hands at the end.

6. 3.

   Which step on Jun's lab card needs fixing?

   • Step 3: tell the teacher about any spill
   • Step 1: goggles are just for work with heat
   • Step 2: hair ties are not needed
   • Step 3 is fine as written
7. 4.

   Microscope drawing with the coarse focus knob, fine focus knob, stage clips and diaphragm labeled. Kira is using the 40× objective and the image is a little blurry. Which part should Kira use to sharpen it?

   • The stage clips
   • The diaphragm
   • The coarse focus knob
   • The fine focus knob
8. 5.

   How should Luz carry a microscope across the room?

   • By the eyepiece, with one hand
   • By the stage, tipped on its side
   • One hand on the arm, one under the base
   • By the cord, swinging it gently
9. 6.

   Water in Noah's graduated cylinder curves down in the middle. The bottom of the curve is at 46 mL; the edges reach 48 mL. What is the volume?

   • 50 mL, the next big mark
   • 48 mL, at the edges of the curve
   • 46 mL, at the bottom of the curve
   • 4.6 mL
10. 7.

    Above, level with the liquid, and below. Where should Pia's eyes be when reading a graduated cylinder?

    • Looking up from below the liquid
    • Level with the surface of the liquid
    • Any angle gives the same reading
    • Looking down from above the cylinder
11. 8.

    Ren's thermometer has a mark every 2 °C. The liquid stops 3 marks above the 20 °C line. What is the temperature?

    • 30 °C, the next number
    • 26 °C
    • 23 °C, counting each mark as 1 °C
    • 20 °C
12. 9.

    Tala's microscope has a 10× eyepiece and a 40× objective. What is the total magnification?

    • 4,000×
    • 40×, the objective alone
    • 400×
    • 50×, adding the lenses
13. 10.

    Ari wants a total magnification of 100× with a 10× eyepiece. The objectives are 4×, 10× and 40×. Which one?

    • The 4× objective
    • The 10× objective
    • A 90× objective, since 10 + 90 = 100
    • The 40× objective