Density Check-In

What is the best way to describe density?

• how much matter is in something
• the amount of space matter takes up (size)
• how tightly packed particles are in an object (how compact)

What is the formula for density?

• mass / volume ( / = divided by)
• Length x Width x Height
• mass x volume
• volume / mass ( / = divided by)

What do you think is denser - a bag of cotton or a bag rocks?

• Cotton
• Rocks

Which block is LESS dense - the block with 8 green dots (left) or more (right)?

• Left (8 dots)
• Right (more than 8 dots)

Calculate density of following item: Mass = 14g Volume= 7cm3

• 2 g/cm3
• 7 g/cm3
• 21 g/cm3

Which item has the LOWEST density?

• A
• B
• C

Which one has the HIGHEST density?

• A
• B
• C

CHALLENGE: Click the TRUE statement(s) - CAREFUL there may be more than one!

• A has the lowest density because it is floating
• B has the highest density because it is in the middle
• C has the highest density because it sinks
• B has a density equal to the liquid it is in because it is suspended (in middle of) the liquid
• A has the highest density because it is floating

Which letter pictures best match this statement: "2 objects that have the same volume, but different mass?"

• A & B
• B & C
• A & C
• None of the above

When 2 objects have the same volume, but different mass, which statement is true?

• they have the same density
• the object with more mass is denser
• the object with less mass is denser
• None of the above