Physics Fluids

These statements are about the particle model of matter. Which one is not correct?

• Liquids are hard to compress because their particles are very close together

• Gases expand to fill their container because there are only weak forces between the particles

• Liquids can flow because there are only very weak forces between the particles

• Solids have a fixed shape because there are very strong forces between the particles

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which fluid particles move the most or the fastest?

• Hot gas particles

• Warm liquid particles

• Cool gas particles

• Cold liquid particles

Tags

NGSS.MS-PS1-4

The term fluids generally applies to:

• solids and liquids

• liquids and gases

• solids and plasma

• solids and gases

The upward force exerted by a fluid is called the:

• buoyant force

• density force

• fluid force

• normal force

Fluids flow (check all that apply):

• when warmed up.

• until they become solid.

• until evenly spread out.

• from high toward low pressure.

What happens when air is warmed?

• It sinks down

• It remains where it is

• It starts rising

• it moves in all directions equally

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Why do fluids expand when they are heated?

• The particles get bigger

• The particles vibrate more and take up more space

• The particles vibrate more and get closer together

• The particles stick together

Tags

NGSS.MS-PS1-4

The air resistance of a object can be reduced by:

• making the object larger.

• giving the object a streamlined shape.

• making the object heavier.

• putting making sure the object is completely sealed up.

Which of the following is an example of when you can feel a fluid (like air) moving?

• wind blowing

• a room feeling warm

• sitting at a desk studying

• sleeping in a bed

Tags

NGSS.MS-ESS2-5

What can be concluded from the experiment pictured?

• Air has no mass and therefore no weight (gravity's effect on mass)

• Air has mass and therefore weight (gravity's effect on mass)

• Air takes up space

• Air creates resistance

Tags

NGSS.MS-PS2-4