Pressure

Question 1

pressure

Answer 1

air molecules colliding with surface molecules, exerting tiny force

Question 2

what is pressure dependant on?

Answer 2

contact area and force

Question 3

pressure equation

Answer 3

P = F x A

Question 4

larger the area . . .

Answer 4

lower the force

Question 5

what is created when there’s pressure in fluids?

Answer 5

force normal to fluid surface

Question 6

pressure in fluids equation

Answer 6

H x density x g

Question 7

increased depth

Answer 7

increased pressure

Question 8

upthrust

Answer 8

upward reactant force

Question 9

does the bottom or top half of a submerged object experience more pressure

Answer 9

bottom

Question 10

more submersion

Answer 10

more upthrust

Question 11

float

Answer 11

upthrust = weight

Question 12

sink

Answer 12

weight > upthrust

Question 13

buoyancy

Answer 13

ability float

Question 14

decompression sickness disease

Answer 14

dissolved nitrogen comes out of solution, under high pressure diffuses into bloodstream

Question 15

why you must return to atmosphere slowly?

Answer 15

so body adjusts to external pressure

Question 16

atmosphere

Answer 16

thin layer around Earth

Question 17

higher altitude lower . . .

Answer 17

pressure, less dense of air molecules, less collisions

Question 18

Magdeburg hemisphere

Answer 18

when air is removed, difference in pressure inner and outer surface, net force

Question 19

force equation (Magdeburg)

Answer 19

pressure difference x A

Question 20

kinetic theory

Answer 20

air molecules exert tiny force, random motion

Question 21

straw

Answer 21

air sucked out, pressure pushed fluid

Question 22

suction cap

Answer 22

air sucked out, net inward force

Question 23

door

Answer 23

held by outward force push