chapter 2

Question 1

what is the standard unit for time?

Answer 1

second

Question 2

what is the standard unit for length?

Answer 2

meter

Question 3

what is the standard unit for mass?

Answer 3

kilogram

Question 4

what are the 4 fundamental forces?

Answer 4

gravity, weak nuclear force, electromagnetism, strong nuclear force

Question 5

what prefix is for the millions

Answer 5

mega or kila

Question 6

what prefix means hundredths

Answer 6

centi

Question 7

what prefix means thousands

Answer 7

kilo

Question 8

what prefix means millionths

Answer 8

micro

Question 9

what is the unit for energy

Answer 9

the joule

Question 10

the energy that would be released if it were changed into pure energy , discounting any speed of motion it already had

Answer 10

rest energy

Question 11

the energy of movement and position

Answer 11

mechanical energy

Question 12

what kind of energy is contained within a battery

Answer 12

chemical

Question 13

what is kinetic energy

Answer 13

the energy of motion

Question 14

what is potential energy

Answer 14

the energy of position

Question 15

the energy of the x-ray or light wave, into the potential energy of the physical position of the electron higher above the nucleus

Answer 15

electromagnetic potential energy

Question 16

which radiologic unit is used to quantify radiation intensity

Answer 16

roentgen

Question 17

which unit is used to quantify the biological effects of radiation on humans and animals

Answer 17

rad

Question 18

which unit is used to quantify radioactivity

Answer 18

curie

Question 19

what is the SI unit for exposure

Answer 19

coulumb

Question 20

what is the SI unit for the absorbed dose

Answer 20

gray

Question 21

what is the SI unit for the effective dose

Answer 21

seivert

Question 22

what attracts all forms of matter to each other

Answer 22

gravity

Question 23

what is responsible for radioactivity in the nuclei of atoms

Answer 23

weak nuclear force

Question 24

what is responsible for the behavior of magnets and electrical charges

Answer 24

electromagnetism

Question 25

what holds protons and neutrons within nucleus of each atoms

Answer 25

the strong nuclear force

Question 26

the property an an object with mass that resists a change in motion

Answer 26

inertia

Question 27

the total energy within a closed system that must always remain constant

Answer 27

conserved quantity

Question 28

any device that can convert one form of energy into another

Answer 28

transducer

Question 29

refers to any substance that flows

Answer 29

liquids

Question 30

the flow of internal energy from one object to another

Answer 30

heat

Question 31

when hot objects or substance comes in contact with a cooler one

Answer 31

conduction

Question 32

occurs when stirring hot molecules into a cooler fluid

Answer 32

convection

Question 33

refers to electromagnetic waves conveying from one object to another

Answer 33

radiation

Question 34

form of lights waves emitted by the sun

Answer 34

infrared radiation

Question 35

as an electron drops down into a lower atomic shell, its positional form of potential energy is emitted as a _____ form of potential energy

Answer 35

electromagnetic

Question 36

the sum of an objects kinetic energy and potential energy must always add up to the same amount

Answer 36

law of conservation of mechanical energy