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: if a spill happens, wipe it up quietly and keep going; Step 4: wash hands at the end.

2. 1.

   Which step on Jun's lab card needs fixing?

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

   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 fine focus knob
   • The stage clips
   • The coarse focus knob
4. 3.

   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
5. 4.

   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 diaphragm
   • The stage clips
   • The arm
   • The coarse focus knob
6. 5.

   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?

   • 4.6 mL
   • 50 mL, the next big mark
   • 48 mL, at the edges of the curve
   • 46 mL, at the bottom of the curve
7. 6.

   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 down from above the cylinder
   • Any angle gives the same reading
   • Looking up from below the liquid
8. 7.

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

   • 20 °C
   • 23 °C, counting each mark as 1 °C
   • 26 °C
   • 30 °C, the next number
9. 8.

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

   • 50×, adding the lenses
   • 400×
   • 4,000×
   • 40×, the objective alone
10. 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×
11. 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 40× objective
    • The 10× objective
    • A 90× objective, since 10 + 90 = 100