Calculating Density: Fun Real-Life Scenarios for 7th Graders

A rock has a mass of 300 grams and occupies a volume of 100 cubic centimeters. What is the density of the rock?

• 1 g/cm³

• 5 g/cm³

• 10 g/cm³

• 3 g/cm³

A metal block weighs 500 grams and has a volume of 250 cubic centimeters. Calculate the density of the metal block.

• 4 g/cm³

• 2 g/cm³

• 3 g/cm³

• 1 g/cm³

A balloon filled with helium has a mass of 50 grams and a volume of 2,000 cubic centimeters. What is the density of the helium-filled balloon?

• 0.1 grams/cm³

• 0.025 grams/cm³

• 0.5 grams/cm³

• 1.0 grams/cm³

A piece of wood has a mass of 200 grams and a volume of 800 cubic centimeters. Determine the density of the wood.

• 1 gram per cubic centimeter

• 0.1 grams per cubic centimeter

• 0.25 grams per cubic centimeter

• 0.5 grams per cubic centimeter

If a liquid has a mass of 1,200 grams and occupies a volume of 1,500 milliliters, what is the density of the liquid?

• 0.8 g/mL

• 1.0 g/mL

• 0.5 g/mL

• 1.2 g/mL

A cube of ice has a mass of 100 grams and a volume of 120 cubic centimeters. Calculate the density of the ice cube.

• 1.25 g/cm³

• 0.5 g/cm³

• 1.0 g/cm³

• 0.8333 g/cm³

A fish tank holds 10 liters of water and weighs 10,000 grams when full. What is the density of the water in the tank?

• 5 grams/milliliter

• 0.5 grams/milliliter

• 1 gram/milliliter

• 2 grams/milliliter

A plastic bottle has a mass of 150 grams and a volume of 500 cubic centimeters. What is the density of the plastic bottle?

• 0.5 g/cm³

• 0.2 g/cm³

• 1.0 g/cm³

• 0.3 g/cm³

A metal sphere has a mass of 1,000 grams and a volume of 400 cubic centimeters. What is the density of the metal sphere?

• 10.0 g/cm³

• 5.0 g/cm³

• 1.0 g/cm³

• 2.5 g/cm³

A sample of air has a mass of 1.2 grams and occupies a volume of 1,000 liters. Calculate the density of the air sample.

• 0.0012 grams per liter

• 0.00012 grams per liter

• 1.2 grams per liter

• 0.12 grams per liter