Mastering the Triple-Beam Balance Technique

Mr. Bider explains how to use a triple beam balance, a common tool in science classes for measuring mass in grams. The video covers the parts of the balance, including the pan and arms, and emphasizes the importance of zeroing the device for accurate measurements. The tutorial demonstrates measuring the mass of an iron cube, detailing the process of adjusting the weights on the arms and ensuring they rest in the grooves. Finally, it shows how to calculate the total mass by adding the values from each arm, resulting in a precise measurement of 127.9 grams.

What is the primary use of a triple beam balance in science class?

• To measure volume

• To measure mass in grams

• To measure temperature

• To measure length

Where should you place the object on the triple beam balance for the most accurate measurement?

• On the edge of the pan

• In the center of the pan

• On the left side of the pan

• On the right side of the pan

What should you ensure about the pan before placing an object on it?

• It is wet

• It is tilted

• It is covered with paper

• It is clean and free of debris

How many arms does a triple beam balance have?

• Four

• Two

• Three

• One

What does it mean to have the triple beam balance 'zeroed'?

• The balance is turned off

• All weights are at the maximum

• All weights are at zero and the lines match up

• The pan is empty

What should you do if the triple beam balance is not zeroed?

• Recalibrate the balance

• Ignore it

• Remove the pan

• Add more weight

Which arm should you start with when measuring the mass of an object?

• The smallest arm

• Any arm

• The middle arm

• The heaviest arm

What tool can help you move the smallest weight more precisely?

• A brush

• A spoon

• A pencil

• A ruler

How do you determine the final mass of an object using a triple beam balance?

• By adding the values from each arm

• By multiplying the values from each arm

• By averaging the values from each arm

• By subtracting the smallest value from the largest

If the smallest arm is at 7 and there are 9 dashes after it, what is the final reading?

• 127.7 grams

• 127.9 grams

• 128.9 grams

• 128.7 grams