Density and volume

What is the formula for density?

• density = mass x volume
• density = mass / volume
• density = mass + volume
• density = mass - volume

Frank has an eraser. It has a mass of 4g, and a volume of 2cm³. What is its density?

• 8 g/cm³
• 2 g/cm³
• 1/2 g/cm³
• 24 g/cm³

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 mL
• 7 g/cm³
• 28 g/cm³
• 1/7 g/cm³

Why do some substances float on water?

• they are warmer than water
• they are cooler than water
• they are more dense than water
• they are less dense than water

Helium balloons rise on earth because

• helium is less dense than air
• helium is more dense than air
• helium is cooler than air
• helium is warmer than air

What is the measuring unit for mass?

• centimeter 
• millimeter 
• grams 
• pounds

Which units of measurement are used for volume?

• grams
• centimeters
• grams/milliliter
• milliliter

What units are used to measure Density?

• cm³/g
• g
• g/cm³
• cm³

What is this tool to get volume?

• triple beam balance
• ruler
• thermometer
• graduate cylinder

True or False:  The density of a specific type of material never changes.  

• True
• False