Test 3

Question 1

Which of the following equals 0.01 g?

Answer 1

1 cg

Question 2

What is the idea that the universe is lawful, orderly, and operates according to physical laws?

Answer 2

principle of causality

Question 3

What is the force that propels an airplane forward?

Answer 3

thrust

Question 4

What type of deformation is a combination of stretching and compressing?

Answer 4

bending

Question 5

What idea explains that molecules of an object move faster as the object is heated?

Answer 5

kinetic theory

Question 6

What is the energy of motion?

Answer 6

kinetic energy

Question 7

What is the energy of visible light?

Answer 7

radiant energy

Question 8

What fundamental force is an attractive force between two masses?

Answer 8

gravitational force

Question 9

What fundamental force binds the subatomic particles in the nucleus together?

Answer 9

strong nuclear force

Question 10

What device is designed to measure the change in heat in physical and chemical changes?

Answer 10

calorimeter

Question 11

What device automatically regulates temperature?

Answer 11

thermostat

Question 12

What is the most important component of a heat pump?

Answer 12

refrigerant

Question 13

If the initial pressure of a gas is 100 kPa, what is the new pressure if the volume is doubled and the temperature is held constant?

Answer 13

50 kPa

Question 14

What device uses a double-walled container and an insulating stopper to keep liquefied gases cold?

Answer 14

Dewar flask

Question 15

What is defined as “the portion of the universe being studied”?

Answer 15

system

Question 16

The transfer of thermal energy without matter is?

Answer 16

radiation

Question 17

The coldest possible temperature is?

Answer 17

absolute zero

Question 18

Scientist often express the laws of the universe as mathematical “sentences” called?

Answer 18

equations

Question 19

The equation for gravitational potential energy is?

Answer 19

PE = mgh

Question 20

The general term for any transfer of thermal energy is?

Answer 20

heat

Question 21

Three factors that affect thermal energy are mass, state of matter, and ?

Answer 21

temperature

Question 22

The factors that affect an object’s rotational kinetic energy are mass, rotational speed, size, and ?

Answer 22

shape

Question 23

The amount of heat needed to cause a unit rise in temperature of a unit mass of a substance

Answer 23

specific heat

Question 24

The amount of space matter takes up

Answer 24

volume

Question 25

The amount of force per unit of area

Answer 25

pressure

Question 26

The ration of the density of a substance to the density of a standard

Answer 26

specific gravity

Question 27

The amount of heat needed to change an object's temperature by a certain amount

Answer 27

heat capacity

Question 28

The amount of disorder in a system

Answer 28

entropy

Question 29

The ability to do work is energy

Answer 29

true

Question 30

How closely a measurement reflects the actual value is precision

Answer 30

accuracy

Question 31

Liquids that evaporate quickly are considered nonvolatile.

Answer 31

volatile

Question 32

Most nations measure temperature using the Fahrenheit scale.

Answer 32

Celsius

Question 33

A device used to measure altitude is an altimeter

Answer 33

true

Question 34

Motion in a circle centered on a point outside the object is circular motion.

Answer 34

true

Question 35

Because it does not cause a change in temperature, heat of vaporization is an example of unrecognized heat.

Answer 35

latent

Question 36

A theoretical device that would generate the maximum possible amount of work from a given amount of heat is an overbalanced wheel.

Answer 36

Carnot engine

Question 37

Potential energy caused by restorative forces is ? potential energy.

Answer 37

elastic

Question 38

Potential energy caused by two stationary charged objects is ? potential energy.

Answer 38

electric

Question 39

One-way diffusion through a semipermeable membrane is?

Answer 39

osmosis

Question 40

The process in which heat is transferred by direct contact is?

Answer 40

conduction

Question 41

Using proper significant figures, (64.0 N/m)(2.406 m) = ?

Answer 41

154 N

Question 42

Extremely small particles that make up matter are called?

Answer 42

atoms

Question 43

The density of an object with a mass of 27 g and a volume of 9 cm3 is?

Answer 43

3 g/cm3

Question 44

The temperature at which the vapor pressure equals atmospheric pressure is the ? point

Answer 44

boiling

Question 45

The SI unit of mass is the ?

Answer 45

kilogram

Question 46

The heat required to change a given mass of a solid into a liquid without changing its temperature is heat of?

Answer 46

fusion

Question 47

The law stating that temperature and pressure are directly related when volume is held constant is?

Answer 47

Amontons's law

Question 48

The law that relates that force needed to deform a solid to the amount of deformation is?

Answer 48

Hooke's law

Question 49

The kinetic energy of a 2.0 kg object moving at 3.0 m/s is?

Answer 49

9.0 J

Question 50

The idea that the lateral pressure of a moving fluid decreases at the fluid's speed increases is?

Answer 50

Bernoulli's principle

Question 51

What that is being cooled stops contracting at a temperature of?

Answer 51

4 degrees C

Question 52

Name the SI unit of energy

Answer 52

joule

Question 53

What are moving currents of fluid that transfer heat>

Answer 53

convection currents

Question 54

Which state of matter exists when temperatures are too high for matter to exist in its ordinary states?

Answer 54

plasma

Question 55

Name the orderly process by which scientists investigate the secrets of nature.

Answer 55

scientific method

Question 56

What scientific principle says that natural processes tend to go toward less usable energy and greater disorder?

Answer 56

second law of thermodynamics

Question 57

What is another name for the vacuum bottle?

Answer 57

Dewar flask

Question 58

Which law states that energy gained (or lost) by a system is equal to energy lost (or gained) by its surroundings?

Answer 58

first law of thermodynamics

Question 59

What form of motion involves a change in an object's position?

Answer 59

translational motion

Question 60

What is the tendency of a solid object to float in a fluid?

Answer 60

buoyancy

Question 61

A gas changing directly into a solid

Answer 61

deposition

Question 62

A gas changing into a liquid

Answer 62

condensation

Question 63

A solid changing into a liquid

Answer 63

melting

Question 64

Internal evaporation in a liquid

Answer 64

boiling

Question 65

A liquid changing into a gas

Answer 65

evaporation