Physics Fluids

If an object sinks in a fluid, _____

• the density of the fluid is greater than the density of the object

• the density of the fluid is less than the density of the object

• the density of the fluid is equal to the density of the object

• density has nothing to do with whether an object sinks or floats, only which state of matter the object is

Water pressure increases as depth increases. 

• True

• False

Which of these forces is the upthrust?

• A

• B

• C

• D

Tags

NGSS.3-PS2-1

Which box has a higher density?  

• Box A

• Box B

• cannot be determined

• they are the same

The term fluids generally applies to:

• solid and liquid

• liquid and gas

• solid and plasma

• water only

Which statements below is INCORRECT about liquids and gases?

• Liquids possess greater kinetic energy than gases.

• Gases have weak molecular force of attraction while liquids have a moderate force of attraction.

• Liquids have a definite size where gases can expand to fill any closed container.

• Gases are easily compressed where liquids are not.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Density is

• the weight of a fixed mass of something

• the volume of a fixed weight of something

• the weight of a fixed volume of something

• the mass of a fixed volume of something

What is the secret of how a ship floats?

• its size 

• its hollow shape 

• the amount of cargo it carries

• number of passengers on board

How does air pressure change as you go from the top of a mountain to sea level?

• pressure increases

• pressure decreases

• pressure stays the same

• it depends of the weather

Density is:

• the weight of a fixed mass of something.

• the volume of a fixed weight of something.

• the weight of a fixed volume of something.

• the mass of a fixed volume of something.