1.4 Reading Graduated Cylinder

What is measured with a graduated cylinder?

• Passage of time
• Distance from one thing to another
• Weight of an object
• Volume of liquid

Tags

CCSS.3.MD.A.2

What is special about graduated cylinders?

• They hold large quantities of liquid safely
• They measure small amounts very accurately. We use them when precision is important.
• They allow us to examine the liquid, we use them when looking for suspended solids.
• They are easily heated. We use graduated cylinders to heat liquids

What is this?

• Measuring tube
• Test tube
• Graduated Cylinder
• Pipette

What is the maximum value this graduated cylinder can measure?

• 10 ml
• 25 ml
• 100 ml
• 250 ml

Where is the number 7?

• 7 is not marked. We know that 7 is between 6 and 8, so I infer that it is the longer line between 6 and 8
• We don't know where 7 is. It might be above 8 or below 6
• This cylinder cannot measure 7 because the marking is not there
• 7 is not an important number so it was left off of this piece of lab glassware

How many spaces are there between 20 and 25?

• 4
• 10
• 8
• 23

How many spaces are there between 6 and 7?

• 10
• 2
• 4
• 5

What is the scale of this graduated cylinder

• 1

• 2

• 3

• 4

See the meniscus?

• Yes, I see that the liquid curves upward along the edge
• What is a meniscus?
• Nope
• I'm confused

Where do we read the level of liquid?

• The highest point the liquid touches
• The bottom of the meniscus
• Half way between, we make an educated guess and round it
• Somewhere about there

Tags

CCSS.3.MD.A.2