Understanding Density Quiz

What are the main objectives of the video?

• To understand density, calculate it, and use it to identify substances.

• To learn about mass and weight.

• To explore the history of density.

• To study the effects of temperature on density.

How is mass typically measured in the context of density?

• In seconds

• In grams

• In liters

• In meters

Why does a golf ball sink while a pingpong ball floats?

• Because the golf ball is denser.

• Because the pingpong ball is heavier.

• Because the pingpong ball is denser.

• Because the golf ball is larger.

What causes oceanic crust to sink below continental crust?

• Color differences

• Size differences

• Density differences

• Temperature differences

Why do hot air balloons rise?

• Because hot air is denser than cold air.

• Because hot air is less dense than the surrounding air.

• Because they are filled with helium.

• Because they are lighter than air.

How is density used in mixed waste recycling?

• By separating materials based on weight.

• By separating materials based on color.

• By separating materials based on size.

• By separating materials based on density.

What is the formula for calculating density?

• Density = Mass / Volume

• Density = Mass x Volume

• Density = Volume - Mass

• Density = Volume / Mass

In the lab demonstration, what did the paper clips represent?

• Temperature

• Density

• Mass

• Volume

What happens to an object that is less dense than water when placed in it?

• It sinks.

• It floats.

• It dissolves.

• It changes color.

Which of the following materials would likely float in water?

• A canister full of rocks

• A canister full of honey

• A canister full of sprinkles

• A canister full of cotton balls