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 4: recording the results can be skipped
   • Step 3: heating needs an adult present
   • 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 2: waft instead of sniffing directly
   • Step 4: small spills can be ignored
   • Step 3: pour without measuring
   • Step 1: take goggles off to see better
5. 3.

   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 diaphragm
   • The stage clips
   • The coarse focus knob
6. 4.

   How should Luz carry a microscope across the room?

   • By the cord, swinging it gently
   • By the stage, tipped on its side
   • One hand on the arm, one under the base
   • By the eyepiece, with one hand
7. 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 arm
   • The coarse focus knob
   • The stage clips
   • The diaphragm
8. 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?

   • 46 mL, at the bottom of the curve
   • 48 mL, at the edges of the curve
   • 4.6 mL
   • 50 mL, the next big mark
9. 7.

   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
10. 8.

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

    • 50×, adding the lenses
    • 4,000×
    • 400×
    • 40×, the objective alone
11. 9.

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

    • 14×, adding the lenses
    • 400×
    • 40×
    • 4×, the objective alone
12. 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 4× objective
    • The 10× objective
    • The 40× objective