Density

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

Which liquid is the least dense?

• oil
• water
• syrup 
• plastic bottle

Where can matter be found?

• Everywhere
• On Earth only
• In a solid and liquid only

How does the mass of a bowling ball on Earth compare to its mass on the moon?

• The mass will be greater on the moon
• The mass will be less on the moon
• The mass will stay the same

What is the formula for density?

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

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

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

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

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

Frank has a paper clip. It has a mass of 9g and a volume of 3cm³. What is its density?

• 3 g/cm³
• 1/3 g/cm³
• 27 g/cm³
• 39 g/cm³

Jill has a gel pen. The gel pen has a mass of 8g and a volume of 2cm³. What is the density of the pen?

• 4 g/cm³
• 16 g/cm³
• .25 g/cm³
• 64 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