Understanding Sinking and Floating

What was the initial problem with the narrator's fish?

• They were not eating properly.

• They were both floating upside down.

• One was stuck at the top and the other at the bottom.

• They were both swimming too fast.

What is density?

• The temperature of an object.

• The mass of an object compared to its volume.

• The volume of an object.

• The color of an object.

Which ball floats on the water surface?

• The ball filled with salt.

• The ball filled with water.

• The ball filled with sand.

• The ball filled with air.

What happens to the ball filled with water when placed in water?

• It sinks to the bottom.

• It bounces up and down.

• It floats to the top.

• It stays in the same position.

How can engineers use the concept of buoyancy?

• To improve computer performance.

• To create vehicles that can float or sink.

• To make buildings taller.

• To design faster cars.

What is one method to confirm buoyancy?

• By checking the color of the object.

• By comparing the buoyancy of different materials.

• By observing the speed of the object.

• By measuring the temperature of the water.

How can you make a floating object sink using a bottle?

• By adding more water to the bottle.

• By shaking the bottle.

• By heating the bottle.

• By squeezing the bottle.

What organ do fish use to control their buoyancy?

• Fins

• Swim bladder

• Gills

• Liver

What was the issue with the narrator's fish's swim bladders?

• They were both too small.

• One was too big and the other was too small.

• They were both too big.

• They were missing entirely.

What did the narrator learn about sinking and floating?

• It's only about the size of the object.

• It's only about the color of the object.

• It's about the temperature of the water.

• It's about the density of the object.