Density Review

What is the relationship between volume and mass when calculating density?

• Density is calculated by dividing mass by volume.

• Mass is not related to volume when calculating density

• Density is calculated by adding mass and volume

• Volume is multiplied by mass to get density

How do you calculate density?

• Density = Mass x Volume

• Density = Volume / Mass

• Density = Mass / Volume

• Density = Weight / Volume

Explain how to determine the density of irregular objects.

• Count the number of sides, then divide by the area to calculate density.

• Measure the mass, measure the volume by water displacement, then divide mass by volume to calculate density.

• Estimate the weight, then divide by the volume to calculate density.

• Use a ruler to measure the length, width, and height, then multiply the dimensions to calculate density.

Provide an example of a real-life scenario where density is important.

• Driving a car

• Baking a cake

• Playing soccer

• Shipbuilding

What factors affect the density of liquids?

• Volume, weight, and texture

• Time, distance, and speed

• Color, shape, and size

• Temperature, pressure, and composition of the liquid

How is the density of gases different from the density of liquids?

• Density is not applicable to gases.

• Gases and liquids have the same density.

• Gases have lower density than liquids.

• Liquids have lower density than gases.

If an object has a volume of 50 cm³ and a mass of 200 g, what is its density?

• 8 g/cm³

• 4 g/cm³

• 6 g/cm³

• 2 g/cm³

A rock displaces 500 mL of water and has a mass of 1,000 g. What is the density of the rock?

• 2 g/cm^3

• 1.5 g/cm^3

• 0.5 g/cm^3

• 3 g/cm^3

Explain why a ship made of steel can float in water even though steel is denser than water.

• The ship floats because it is filled with helium, making it lighter than water.

• The ship floats because it is coated with a special waterproof material that repels water.

• The ship floats because it has a magical spell cast on it to defy gravity.

• The ship floats because it displaces water equal to its weight, creating buoyant force.

In a hot air balloon, why does the balloon rise when the air inside is heated?

• The balloon rises because of the shape of the basket

• The balloon rises due to the color of the fabric used

• The less dense hot air inside the balloon is lighter than the denser cold air outside, creating a buoyant force that lifts the balloon.

• The balloon rises because of the weight of the passengers

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