midterm

Question 1

The factor in an experiment that is changed by the experimenter is the __

Answer 1

independent variable

Question 2

a visual display of information or data is __

Answer 2

graph

Question 3

an idea,e vent, or object is represented by a __

Answer 3

model

Question 4

a test of hypothesis is a __

Answer 4

experiment

Question 5

a standard for comparison that is used in an experiment is an ___

Answer 5

control

Question 6

rule of nature that tells you what will happen under certain conditions Is a __

Answer 6

scientific law

Question 7

the independent variable in an experiment may cause change in the ___

Question 8

the amount of space occupied by an object is called its __

Answer 8

volume

Question 9

a testable prediction is a __

Answer 9

hypothesis

Question 10

another term for applied science is ___

Answer 10

technology

Question 11

a variable in a experiment that doesn’t change is a __

Answer 11

constant/controlled variable

Question 12

an explanation based on many observations supported by experimental results is a ___

Answer 12

scientific theory

Question 13

an exact quantity that people agree to use for comparison is a ___

Answer 13

standard

Question 14

a measurement of the quantity of matter is ___

Answer 14

mass

Question 15

a group of people that share the same similar values and beliefs ___ form a ___

Answer 15

society

Question 16

acceleration toward the center of a curved path is called ___ acceleration

Answer 16

centripetal

Question 17

what occurs when an objects velocity decreases

Answer 17

deceleration

Question 18

theory that describes movement of land masses

Answer 18

plate tectonics

Question 19

name for the slant of a line on a graph

Answer 19

slope

Question 20

distances divided by time =

Answer 20

speed/rate

Question 21

total distance divided by total time _

Answer 21

average speed

Question 22

distance and direction of an object from it starting point

Answer 22

displacement

Question 23

product of an objects mass and velocity

Answer 23

p=mv

Question 24

measure of how far an object has moved

Answer 24

distance

Question 25

speed and direction of motion

Answer 25

velocity

Question 26

rate of change of position at a specific point in time

Answer 26

instantaneous velocity

Question 27

the rate of change in velocity is called ___

Answer 27

acceleration

Question 28

the phrase "to every action there is an equal and opposite reaction" is ___

Answer 28

newtons third law of motion

Question 29

the largest velocity reached by a falling object is its

Answer 29

terminal velocity

Question 30

an object at rest on the surface of the earth is experiencing zero ___

Answer 30

net force

Question 31

when an object moves in a circle ___ acts to accelerate the object toward the center of that circle

Answer 31

centripetal acceleration

Question 32

when a car travels around a curve in the road ___ helps to keep the car traveling in a curved path

Answer 32

centripetal force

Question 33

the force exerted by air on a moving object is called ___

Answer 33

air resistance

Question 34

a net force acting on an object causes the object to accelerate in the direction of the force this is ___

Answer 34

newtons second law of motion

Question 35

a property of a moving object resulting from its mass and velocity is ___

Answer 35

momentum

Question 36

______ is the force that every object in the universe exerts on every other object

Answer 36

gravity

Question 37

an objects ___is the measure of the force of gravity on that object

Answer 37

weight

Question 38

the amount of gravitational force between 2 objects depends on their masses and the ___ between them

Answer 38

distance

Question 39

weight is measured in

Answer 39

newtons

Question 40

two surfaces that are not moving past each other have __

Answer 40

static friction

Question 41

___ causes a box you are pushing across the floor to stop when you stop pushing it

Answer 41

friction

Question 42

total amount of kinetic and potential energy in a system

Answer 42

mechanical energy

Question 43

the ability to cause change

Answer 43

energy

Question 44

stored energy due to position

Answer 44

potential energy

Question 45

energy in the form of motion

Answer 45

Kinetic Energy

Question 46

energy cannot be created or destroyed

Answer 46

true

Question 47

does work with only one movement of the machine

Answer 47

simple machine

Question 48

energy stored in chemical bonds

Answer 48

potential energy

Question 49

ratio of output work to input work

Answer 49

efficiency

Question 50

energy stored by things that are above earth

Answer 50

gravitational potential energy

Question 51

SI unit of energy

Answer 51

joules

Question 52

force applied thru a distance

Answer 52

work=force times distance

Question 53

the amount of kinetic energy of a moving object has depends on its mass and its _____

Answer 53

speed

Question 54

the potential energy of an object depends on its __

Answer 54

position, mass, the force upon it.

Question 55

the law of ------ states that energy cannot be created or destroy

Answer 55

conservation of energy

Question 56

a compound machine is a combination of 2 or more -----

Answer 56

simple machine

Question 57

the total energy of a system remains

Answer 57

constant

Question 58

the ____ increases when the average kinetic energy of the particles in a material increases

Answer 58

temperature

Question 59

thermal energy transfer that does not require matter is ___

Answer 59

radiation

Question 60

the total entropy (disorder) of an isolated system always increases over time

Answer 60

second law of thermodynamics

Question 61

allows electrons to move thru it easily

Answer 61

conductor

Question 62

closed path thru which electrons

Answer 62

electric circuit

Question 63

accumulation of electric charges on an object

Answer 63

static electricity

Question 64

circuit with more than one path

Answer 64

parallel circuit

Question 65

tendency of material to oppose electron flow

Answer 65

resistance

Question 66

does not allow electricity to move easily thru it

Answer 66

insulator

Question 67

push that causes charges to move

Answer 67

voltage

Question 68

surrounds electric charge and exerts force o other charges

Answer 68

electric feild

Question 69

rate at which electrical energy is changed to another energy form

Answer 69

electrical power

Question 70

flow of electrons thru a conductor

Answer 70

electric current

Question 71

circuit with o ly one patn

Answer 71

series circuit

Question 72

unit of electrical energy

Answer 72

killowat hour

Question 73

current is equal to the voltage difference of a circuit divided by its resistance

Answer 73

ohms law

Question 74

metal rod that directs lighting to earth

Answer 74

lighting