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 1: goggles are not needed
   • Step 3: heating needs an adult present
   • 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 2: waft instead of sniffing directly
   • Step 1: take goggles off to see better
   • Step 4: small spills can be ignored
   • Step 3: pour without measuring

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 is fine as written
   • Step 1: goggles are just for work with heat
   • Step 3: tell the teacher about any spill
   • Step 2: hair ties are not needed
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 fine focus knob
   • The coarse focus knob
   • The stage clips
   • The diaphragm
8. 5.

   Microscope drawing with the diaphragm, stage clips, coarse focus knob and arm labeled. The view is too dark. Which part lets Milo change how much light passes through the slide?

   • The stage clips
   • The coarse focus knob
   • The arm
   • The diaphragm
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 down from above the cylinder
    • Level with the surface of the liquid
    • Looking up from below the liquid
    • Any angle gives the same reading
11. 8.

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

    • 400×
    • 4,000×
    • 40×, the objective alone
    • 50×, adding the lenses
12. 9.

    Zee switches to the 4× objective with the same 10× eyepiece. What is the total magnification now?

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

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

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