Test 2

Question 1

The scientist who proposed that air has weight and therefore exerts pressure was?

Answer 1

Torricelli

Question 2

A device used to measure altitude is a(n)

Answer 2

altimeter

Question 3

The attractive force between unlike molecules is?

Answer 3

adhesion

Question 4

The phenomenon in which liquids in thin tubes rise above or fall beneath their levels is?

Answer 4

capillarity

Question 5

The maximum amount of permanent change a solid may be subjected to without breaking is its?

Answer 5

plasticity

Question 6

The ability of a solid to recover its original shape after it is deformed is?

Answer 6

elasticity

Question 7

A combination of stretching and compression is?

Answer 7

bending

Question 8

The theory that says that all molecules of matter are in constant motion and that molecules move faster at warmer temperatures is the ? theory of matter.

Answer 8

kinetic

Question 9

The basis for the scientific understanding of all matter is the ? theory of matter.

Answer 9

atomic

Question 10

Solids whose molecules or atoms are arranged in an ordered pattern are?

Answer 10

crystalline

Question 11

The process of mixing molecules of one substance with another substance by random molecular motion is?

Answer 11

diffusion

Question 12

The random motion of microscopic solid particles in a fluid is?

Answer 12

Brownian motion

Question 13

The SI unit of pressure is the?

Answer 13

pascal

Question 14

The small piston of a hydraulic press has an area of 2.0 cm2 and the large piston has an area of 16 cm2. If the small piston has a force of 4.0 N applied to it, the output force of the large piston is?

Answer 14

32 N

Question 15

Thin solids that allow certain substances to diffuse through them are said to be?

Answer 15

semipermeable

Question 16

The principle demonstrated by a hydraulic press is?

Answer 16

Pascal’s principle

Question 17

The tendency of a solid object to float when placed in a fluid is?

Answer 17

buoyancy

Question 18

Airfoil-like structures designed for use in water are?

Answer 18

hydrofoil

Question 19

The property that describes how strongly a material opposes deformation is?

Answer 19

rigidity

Question 20

The type of deformation caused by twisting is?

Answer 20

torsion

Question 21

Lateral pressure exerted by a moving fluid decreases as the fluid’s speed increases

Answer 21

Bernoulli’s principle

Question 22

Buoyant force experienced by an object is exactly equal to the weight of the fluid displaced.

Answer 22

Archimedes’ pinciple

Question 23

Amount of deformation is proportional to the amount of stretching force

Answer 23

Hooke’s law

Question 24

Applied pressure inside a closed container is equally distributed

Answer 24

Pascal’s principle

Question 25

At a constant volume, temperature and pressure of a gas are directly proportional

Answer 25

Amontons's law

Question 26

At a constant pressure, volume and temperature of a gas are directly proportional

Answer 26

Charles's law

Question 27

One-way diffusion through a semipermeable membrane is osmosis.

Answer 27

true

Question 28

Molecules of a gas are able to move quickly but remain close to each other

Answer 28

liquid

Question 29

The ability of a gas to be easily squeezed and compacted into smaller containers is its density

Answer 29

compressibility

Question 30

A simple device used to move a liquid over an obstacle without pumps is a siphon

Answer 30

true

Question 31

Solids that have molecules or atoms randomly arranged are crystalline solids

Answer 31

amorphous

Question 32

The hardness scale that measures how easily a material can be scratched is the Mohs scale

Answer 32

true

Question 33

What type of vessel can change its buoyancy to float on the water's surface or maneuver beneath the surface?

Answer 33

submarine

Question 34

What are the extremely small particles that make up matter?

Answer 34

atoms

Question 35

What is the science of shaping objects to allow the smooth flow of fluids around them?

Answer 35

streamlining

Question 36

What is the curved structure that forms because the adhesion of water to glass is stronger than the cohesion between water molecules?

Answer 36

meniscus

Question 37

At what point is a submarine completely underwater but not sinking?

Answer 37

neutral buoyancy

Question 38

Increases wing area to produce more lift

Answer 38

flap

Question 39

Structure that tilts the airplane from side to side

Answer 39

aileron

Question 40

Downward force of gravity on an airplane

Answer 40

weight

Question 41

Force that tends to slow an object moving through a fluid

Answer 41

drag

Question 42

An airplane's angle left and right

Answer 42

yaw

Question 43

controls pitch

Answer 43

elevator

Question 44

For a certain spring, the spring constant is 500.0 N/m. Use Hooke's law to determine the force required to stretch the spring a distance of 0.030 m.

Answer 44

Use F = kx k = constant x = distance

Question 45

The original volume and pressure of a gas sample were 8.0 L and 125 kPa. If the pressure is increased to 200.0 kPa while the temperature is kept constant, what is the new volume of the gas in the container?

Answer 45

Use V2 = P1V1/P2 P1 = 1st kPa V1 = L P2 = increased kPa

Question 46

A book with an area of 0.0800 m2 and a weight of 1.00 N is lying on a table. Find the pressure on the surface of the table caused by the weight of the book.

Answer 46

Use P = F/A F = weight A = area