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 1: goggles are not needed
   • Step 2: long hair can stay loose
   • 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 1: take goggles off to see better
   • Step 4: small spills can be ignored
   • Step 3: pour without measuring
   • Step 2: waft instead of sniffing directly

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 2: hair ties are not needed
   • Step 1: goggles are just for work with heat
   • 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 coarse focus knob
   • The diaphragm
   • The fine focus knob
   • The stage clips
8. 5.

   How should Luz carry a microscope across the room?

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

   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 coarse focus knob
   • The arm
   • The stage clips
   • The diaphragm
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
    • Any angle gives the same reading
    • Looking up from below the liquid
11. 8.

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

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

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

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

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

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