1-2 Pre Lab Questions

Why is it important to label the caps of the plastic tubes with masking tape?

• To identify the contents easily

• To make the tubes look colorful

• To prevent leakage

• To protect from sunlight

What is the purpose of tube C in this experiment?

• To serve as a control

• To hold extra liquid

• To measure temperature

• To store waste

How much Soil A and Soil B should you measure and add to tubes A and B, respectively?

• 10 grams each

• 5 grams each

• 15 grams each

• 20 grams each

How many milliliters of water should be added to each tube?

• 5 mL

• 10 mL

• 15 mL

• 20 mL

How much Organic Matter (OM) testing solution is used for each tube?

• 2 mL

• 5 mL

• 10 mL

• 15 mL

What should you do immediately after adding the Organic Matter testing solution to each tube?

• Seal the tube

• Shake the tube

• Heat the tube

• Cool the tube

Tags

NGSS.HS-PS1-5

What should you record in your data table after observing the tubes?

• The color of the liquid

• The temperature of the liquid

• The weight of the tube

• The smell of the liquid

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

After transferring the liquid from each tube to the corresponding cups, what should you use to compare the color of the liquids?

• A color chart

• A thermometer

• A scale

• A ruler

Lab Safety: If you do not understand a direction or part of a laboratory procedure, you should

• figure it out as you do the lab.

• try several methods until something works.

• ask the teacher before proceeding.

• skip it and go on to the next part.

Lab Safety: Cleaning up the science classroom is the job of -

• every student

• the materials manager

• the student who picked up the materials