Physical Science Test #1

Front 1

A generalized mental image of an object is a (an)

Back 1

concept

Front 2

Which of the following is the best example of the use of a referent

Back 2

Big as a dump truck

Front 3

A well-defined and agreed-upon referent used as a standard in all systems of measurement is called a

Back 3

unit

Front 4

A process of comparing a property to a well-defined and agreed-upon referent is called

Back 4

measurement

Front 5

One of the following is NOT considered to be a fundamental property

Back 5

weight

Front 6

How much space something occupies is described by its

Back 6

volume

Front 7

The relationship between two numbers that is usually obtained by dividing one number by the other is called a (an)

Back 7

ratio

Front 8

The ratio of mass per volume of a substance is called its

Back 8

density

Front 9

After identifying the appropriate equation, the next step in correctly solving a problem is to

Back 9

solve the equation for the variable in the question

Front 10

Suppose a problem situation describes speed in km/h and a length in m. What conversion should you do before substituting quantities for symbols.

Back 10

km/h TO m/s

Front 11

An equation describes a relationship where

Back 11

the numbers and units on both sides are equal

Front 12

the equation p = m/v is a statement that

Back 12

describes a property

Front 13

Measurement information that is used to describe something is called

Back 13

data

Front 14

If you consider a very small portion of a material that is the same throughout, the density of the small sample with be

Back 14

the same

Front 15

The symbol (triangle/delta) means

Back 15

the change in

Front 16

A model is

Back 16

a physical copy of an object or system made at a smaller scale, a sketch of something complex used to solve probl

em, an interpretation of a theory by use of an equation

Front 17

The use of a referent in describing a property always implies

Back 17

a comparison with a similar property of another object

Front 18

a 5 km span is the same as how many meters

Back 18

5000 m

Front 19

one-half liter of water is the same volume as

Back 19

500 cm cubed

Front 20

which of the following is NOT a measurement

Back 20

120

Front 21

What happens to the surface area-to-volume ratio as the volume of a cube becomes larger

Back 21

it decreases

Front 22

if one variable increases in value while a second, related variable decreases in value, the relationship is said to be

Back 22

inverse

Front 23

what is needed to change a proportionality statement into an equation

Back 23

include a proportionality constant

Front 24

a proportionality constant

Back 24

might or might not have a unit

Front 25

a scientific investigation provides understanding through

Back 25

experimnetal evidence

Front 26

statements describing how nature is observed to behave consistently time after time are called scientific

Back 26

laws

Front 27

a controlled experiment comparing two situations has all identical influencing factors except the

Back 27

experimental variable

Front 28

in general, scientific investigations have which activities in common

Back 28

collect observations, develop explanations, test explanations

Front 29

quantities, or measured properties, that are capable of changing values are called

Back 29

variables

Front 30

A proportional relationship that is represented by the symbols a infinity 1/b represents which of the following relationships

Back 30

inverse proportion

Front 31

A hypothesis concerned with a specific phenomenon is found to be acceptable through many experiments over a long period of time. This hypothesis usually becomes known as a

Back 31

scientific law

Front 32

a scientific law can be expressed as

Back 32

a written concept, an equation, a graph

Front 33

The symbol infinity has a menaning of

Back 33

In proportional to

Front 34

which of the following symbols represents a measured property of the compactness of matter

Back 34

p

Front 35

A candle with a certain weight melts in an oven, and the resulting weight of the wax is

Back 35

the same

Front 36

An ice cube with a certain volume melts, and the resulting volume of water is

Back 36

less

Front 37

Compare the density of ice to the density of water. The density of ice is

Back 37

less

Front 38

A beverage glass of filled to the brim with ice-cold water and ice cubes. Some of the ice cubes are floating above the water level, when the ice melts, the water in the class will

Back 38

stay at the same level

Front 39

What is the proportional relationship between the volume of juice in a cup and the time the juice dispenser has been running

Back 39

direct.

Front 40

What is the proportional relationship between the number of cookies in the cookie jar and the time you have been eating the cookies

Back 40

inverse

Front 41

A movie projector makes a 1m by 1m image when projecting 1m froma screen, a 2m by 2m image when projecting 2 m from the screen, and a 3m by 3m image when projecting 3m from the screen. What is the proprtional relationship between the distance from the screen and the area of the image

Back 41

square

Front 42

A movie projector makes a 1m by 1m image when projecting 1 m from a screen, a 2m by 2m image when projecting 2 m from the screen, and a 3 m by 3m image when projecting 3 m from the screen. What is the proportional relationship between the distance from the screen and the intesnsity of the light falling on the screen

Back 42

inverse square

Front 43

According to the scientific method, what needs to be done to move beyond conjecture or simple hypotheses in a person's understanding of his or her physical surroundings

Back 43

conduct a controlled experiment.

Front 44

A straight-line distance covered during a certain amount of time describes an objects

Back 44

speed

Front 45

how fast an object is moving in a particular direction is described by

Back 45

velocity

Front 46

Acceleration occurs when an object undergoes

Back 46

a speed increase, a speed decrease, a change in direction of travel

Front 47

A car moving at 60 km/h comes to a stop in 10s when the driver slams on the brakes, in this situation what does 60 km/h represent

Back 47

initial speed

Front 48

A car moving at 60 km/h comes to a stop in 10s when the driver slams on the brakes. in this sitaution, what is the final speed/

Back 48

0 km/h

Front 49

According to Galileo, an object moving without opposing friction or other opposing forces will

Back 49

continue moving at a constant speed

Front 50

In free fall, an object is seen to have a

Back 50

constant acceleration

Front 51

A tennis ball is hit, causing it to move upward from the racket at some angle to the horizon before it curves back to the surface in the path of a parabola. While it moves along this path,

Back 51

the horizontal speed remains the same

Front 52

A quantity of 5m/s squared is a measure of

Back 52

acceleration

Front 53

An automobile has how many different devices that can cause it to undergo acceleartion

Back 53

Three or more

Front 54

Ignoring air resistance, an object falling toward the surface of Earth has a velocity that is

Back 54

increasing

Front 55

Ignoring air resistance, an object falling near the surface of Earth has an acceleration that is

Back 55

constant

Front 56

Two objects are released from the same height at the same time, and one has twice the weight of the other. Ignoring air resistance,

Back 56

they both hit at the same time

Front 57

A ball rolling across the floor slows to a stop because

Back 57

there is a net force acting on it.

Front 58

The basic difference between instantaneous and average speed is that

Back 58

average speed is for a total distance over a total time of trip

Front 59

Does any change in the motion of an object result in an acceleartion

Back 59

yes

Front 60

A measure of how fast your speed is changing as you travel to campus is a measure of

Back 60

acceleration

Front 61

Considering the forces on the system of you and a bicycle as you pedal the bike at a constant velocity in a horizontal striaght line

Back 61

all forces are in balance, with the net force equal to zero.

Front 62

Newton's first law of motion describes

Back 62

the tendency of a moving or stationary object to resist any change in its state of motion

Front 63

You are standing freely on a motionless shuttle bus. when the shuttle bus quickly begins to move forward, you

Back 63

stay in one place over the surface of Earth as the shuttle bus moves from under you

Front 64

Mass is measured in kilograms, which is a measure of

Back 64

inertia

Front 65

Which metric unit is used to express a measure of weight

Back 65

N

Front 66

Newton's third law of motion states that forces occur in matched pairs that act in opposite directions between two different bodies. This happens

Back 66

every time two bodies interact

Front 67

If you double the unbalanced force on an object of a given mass, the acceleration will be

Back 67

doubled

Front 68

If you double the mass of a cart while it is undergoing a constant unbalanced force, the acceleration will be

Back 68

one-half as much

Front 69

Doubling the distance between the center of an orbiting satellite and the center of Earth will result in what change in the gravitational attraction of Earth for the satellite

Back 69

one-fourth as much

Front 70

If a ball swinging in a circle on a string is moved twice as fast, the force on the string will be

Back 70

four times as great

Front 71

A ball is swinging in a circle on a string when the string length is doubled. At the same velocity, the force on the string will be

Back 71

one-half as much

Front 72

Suppose the mass of a moving scooter is doubled and its velocity is also doubled. The resulting momentum is

Back 72

quadrupled

Front 73

Two identical moons are moving in identical circular paths, but one moon is moving twice as fast as the other. Compared to the slower moon the centripetal force required to keep the faster moon on the path is

Back 73

four times as much

Front 74

Which undergoes a greater change of momentum, a golf ball or the head of a golf club, when the ball is hit from a golf tee.

Back 74

Both undergo the same changes, but in opposite directions

Front 75

Newton's law of gravitation tells us that

Back 75

every object in the universe is attracted to every other object in the universe.

Front 76

An astronaut living on a space station that is orbiting Earth will

Back 76

be in free fall, experiencing apparent weightlessness

Front 77

A measure of the force of gravity acting on an object is called

Back 77

weight

Front 78

You are at rest with a grocery cart at the supermarket when you see a checkout lane open. You apply a certain force to the cart for a short time and acquire a certain speed. Neglecting friction, how long would you have to push with one-half the force to acquire the same final speed

Back 78

twice as long

Front 79

Once again you are at rest with a grocery cart at the supermarket when you apply a certain force to the cart for a short time and enough to double the mass of the groceries and cart. Neglecting friction, doubling the mass would have what effect on the resulting final speed if you used the same force for the same length of time. The new final speed would be

Back 79

one-half

Front 80

You are moving a grocery cart at a constant speed in a straight line down the aisle of a store. For this situtation, the forces on the cart are

Back 80

balanced, with a net force of zero

Front 81

Neglecting air resistance, a ball in free fall near Earth's surface will have

Back 81

increasing speed and constant acceleration

Front 82

from a bridge, a ball is thrown straight up at the same time a ball is thrown straight down with the same initial speed. Neglecting air resistance, which ball would have a greater speed when it hits the ground

Back 82

both balls would have the same speed

Front 83

After being released, a ball thrown straight up from a bridge will have an acceleration of

Back 83

9.8 m/s squared

Front 84

A gun is aimed horizontally at the center of an apple hanging from a tree. The instant the gun is fired, the apple falls and the bullet

Back 84

hits the apple

Front 85

According to the third law of motion, which of the following must be true about a car pulling a trailer

Back 85

The action-reaction forces between the car and the trailer are equal, but the force between the ground and the car pushes them forward.

Front 86

A small sports car and a large SUV collide head on and stick together without sliding. Which vehicle had the larger momentum change

Back 86

it would be equal for both

Front 87

Again consider the small sports car and large SUV that collided head on and stuck together without sliding. Which vehicle must have experienced the larger decleration during the collision.

Back 87

The small sports car

Front 88

An orbiting satellite is moved from 10,000 to 30,000km from Earth. This will result in what change in the gravitiational attraction between Earth and the satellite

Back 88

one-ninth as much

Front 89

Newton's law of gravitation consider the product of two masses because

Back 89

both masses contribute equally to the force of attraction.