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

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

   How should Luz carry a microscope across the room?

   • By the eyepiece, with one hand
   • By the cord, swinging it gently
   • One hand on the arm, one under the base
   • By the stage, tipped on its side
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 diaphragm
   • The stage clips
10. 7.

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

    • Level with the surface of the liquid
    • Looking up from below 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
    • 23 °C, counting each mark as 1 °C
    • 26 °C
    • 20 °C
12. 9.

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

    • 40×
    • 4×, the objective alone
    • 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?

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