physics unit 10

Question 1

density is how much … there is in a given ….

Answer 1

mass, volume

Question 2

materials that can flow and alter their shape in the process are known as …..

Question 3

examples of fluids are …. and ….

Answer 3

gasses and liquids

Question 4

….. are not sinsidered to be fluids because they cannot flow and therefore have a definite ….

Answer 4

solids, shape

Question 5

when an object is immersed in a fluid, the upward force that a fluid exerts on an object that is completely or partially immersed in it is called …..

Answer 5

bouyant force

Question 6

bouyant force is also known as ….

Answer 6

upthrust

Question 7

because of the buoyant force, the object appears to weigh … when submerged

Answer 7

less

Question 8

the weight of an object immersed in a fluid is the object’s…..

Answer 8

apparent weight

Question 9

when an object is immersed in a fluid, it ….. the fluid that would otherwise fill that region of space. this is called ……

Answer 9

displaces, displaced fluid

Question 10

the volume of the displaced liquid is …. to the ….. of the ….. of hte object that is …. in the liquid

Answer 10

equal, volume, portion, submerged

Question 11

any object completely or partially submerged in a fluid experiences a …. equal in the magnitude to the …… by the object

Answer 11

buoyant force, weight of fluid displaced

Question 12

if an object floats, the buoyant force exerted by the water is …. to the weight of the water ….. by the submerged part of the wood, which is also equal to the weight of the……

Answer 12

equal, displaced, entire object

Question 13

if an object sinks, the buoyant force is …. than the objects weight

Answer 13

less

Question 14

pressure is a …. quantity

Answer 14

scalar

Question 15

the …. is the weight of …. over a specific location on earth

Answer 15

atmospheric pressure, air

Question 16

pressure as a function of depth. the equation of pressure because of a fluid at a depth is known as the ……

Answer 16

hydrostatic pressure

Question 17

the absolute pressure of an object is the addition of the ….. and the ….

Answer 17

atmospheric pressure and the gauge pressure

Question 18

a connected liquid in …… rises to the same ….. in all ….. regions of the container

Answer 18

hydrostatic equalibrium, height, equilibrium

Question 19

in hydrostatic equilibrium, the pressure is the …. at all points on a …… through a …… liquid of a single kind

Answer 19

same, horizontal line, connected

Question 20

pascals principle state if an ,,,, pressure is applied to a …… fluid, the pressure at ….. within the fluid ….. by that … amount

Answer 20

external, confined, every point, changes, same

Question 21

if the flow of a fluid is smooth, it is called streamline or …….

Answer 21

laminar flow

Question 22

if the flow has eddies, it is referred to as ……

Answer 22

turbulent flow

Question 23

the …………. i the mass that passes a given point per unit time. the flow rates at any two points must be …., as long as ….. fluid is being added or taken away

Answer 23

mass flow rate, equal, no

Question 24

(continuitiy) this equation is all about conservation of…..

Answer 24

mass

Question 25

where the pipe is ....., the flow is ....... and where the pip is ......., the flow is......

Answer 25

wider, slower, smaller, faster

Question 26

the pressure is ..... at a pint along a steamline where the fluid is moving ....., ....... where the fluid is moving .....

Answer 26

higher, slower, lower, faster