Quiz about Survey of Physical Science Exam #1

Question 1

As a falling object travels faster and faster through the air,

Accepted Answer

All of the above

Answer

Net force decreases

Answer

Air resistance increases

Answer

Acceleration decreases

Question 2

In a simple experiment, you compare the absorption of several paper towel brands. What would be the dependent variable?

Accepted Answer

Amount of liquid absorbed by the paper towel

Answer

Brand of towels

Question 3

The crumple zone on a car is designed to reduce the impulse on the vehicle

Accepted Answer

False

Answer

True

Question 4

A description of a phenomenon that has been verified by many scientists is called a

Accepted Answer

Scientific Law

Answer

Scientific Theory

Answer

Scientific Hypothesis

Question 5

A theory is an educated guess about the outcome of a specific experiment

Accepted Answer

False

Answer

True

Question 6

If the sun were twice as massive, its pull on Earth would be

Accepted Answer

Twice as much

Answer

Four times as much

Answer

Unchanged

Answer

Half as much

Question 7

If the radius of the Earth increased, your weight as its surface would increase

Accepted Answer

False

Answer

True

Question 8

The soccer ball was launched with an upward velocity of 20 m/s. How long will it take for it to come back down?

Accepted Answer

4 seconds

Answer

2 seconds

Answer

1 second

Answer

8 seconds

Question 9

Two balls of differing masses free fall from the same height. Just before impact with the ground, the more massive ball

Accepted Answer

has greater momentum and kinetic energy

Answer

has greater momentum, kinetic energy, and velocity

Answer

has greater momentum

Answer

has greater velocity

Question 10

If the velocity of a car doubles, what else doubles?

Accepted Answer

momentum

Answer

both momentum and kinetic energy

Answer

kinetic energy

Question 11

A constant net force on a lawn mower produces constant

Accepted Answer

acceleration

Answer

velocity

Answer

both acceleration and velocity

Question 12

Two hockey players of differing masses collide with each other. Which experiences greater impact force?

Accepted Answer

the force on both is the same

Answer

more massive player

Answer

less massive player

Answer

not enough info

Question 13

A book sits at rest on a table. If the action force is Earth pulling downward on the book, the reaction force is

Accepted Answer

the book pulling upward on the Earth

Answer

the table pushing upward on the book

Answer

the Earth pulling downward on the table

Answer

the book pulling upward on the table

Question 14

A falling object that reaches terminal velocity continues to have

Accepted Answer

speed

Answer

acceleration

Answer

a nonzero net force acting on it

Answer

both speed and acceleration

Question 15

A karate chop delivers a blow of 3500 N to a board that breaks. The force that acts on the hand during this event is..

Accepted Answer

3500 N

Answer

more than 3500 N

Answer

no force acts on the hand

Answer

less than 3500 N

Question 16

The same magnitude force acting on objects of different masses will cause

Accepted Answer

a greater acceleration on the lesser mass object

Answer

the same acceleration on both masses

Answer

a greater acceleration on the greater mass object

Question 17

Inertia is a force

Accepted Answer

False

Answer

True

Question 18

a 300-kg object has 3 times more inertia than a 100-kg object.

Accepted Answer

True

Answer

False

Question 19

On Earth, a 1-kg mass weights

Accepted Answer

about 10 N

Answer

need more info to answer

Answer

100 N

Answer

1 N

Question 20

A pair of parallel forces, 8 N and 12 N, act on an object. The magnitude of the net force on the object is..

Accepted Answer

could be either 4 N or 20 N

Answer

20 N

Answer

4 N

Question 21

An object in mechanical equilibrium is...

Accepted Answer

either at rest OR moving at a constant velocity

Answer

at rest

Answer

moving at a constant velocity

Question 22

When an airplane flies horizontally at decreasing speed in a straight line, the air resistance on the plane is

Accepted Answer

more than the amount of thrust

Answer

equal to the amount of thrust

Answer

less than the amount of thrust

Question 23

If a plane orbits a star at a constant speed, then its acceleration is zero

Accepted Answer

False

Answer

True

Question 24

You are driving a car at 50 km/h and collide head-on with a car traveling at 30 km/h. The impact speed is

Accepted Answer

80 km/h

Answer

30 km/h

Answer

50 km/h

Answer

20 km/h

Question 25

Which of Newtons laws is demonstrated when a passenger continues forward in the event of the car's sudden stop?

Accepted Answer

Newtons 1st law of motion

Answer

Newtons 2nd law of motion

Answer

Newtons 3rd law of motion

Question 26

All advances in science have been made through the scientific method.

Accepted Answer

False

Answer

True

Question 27

Which of the following statements would be considered a theory?

Accepted Answer

Continental drift is caused by convection currents in Earth's mantle

Answer

The continents drift at a rate of 1 to 12 inches per year.

Question 28

Which of the following statements would be considered a law?

Accepted Answer

A particle attracts every other particle in the universe with a force based on their masses and distance from each other.

Answer

Massive objects cause a distortion in space-time, so a free-falling object will follow the curvature of this distortion, bringing objects together.

Question 29

When a hypothesis that explains an aspect of the natural world is tested over and over again and has not been contradicted, it may become a scientific theory.

Accepted Answer

True

Answer

False

Question 30

When a scientific theory has been tested over and over again it may become elevated to a scientific law.

Accepted Answer

False

Answer

True

Question 31

Which of the following statements is untrue about scientific theory.

Accepted Answer

A scientific theory is an idea that has not been verified yet.

Answer

A scientific theory can encompass several verified hypothesis about certain aspects of the natural world.

Answer

A scientific theory is an explanation of why nature behaves as it does.

Question 32

Which of the following statements is UNTRUE about scientific law

Accepted Answer

A scientific law is a physical concept that can never change

Answer

A scientific law is a description of a phenomenon in the natural world

Answer

A scientific law has been verified repeatedly by observation or experiment

Answer

A scientific law is often defined in terms of a mathematical equation

Question 33

Isaac Newton developed an equation that Mathematically described a force of attraction between different bodies in the universe. This is considered a law.

Accepted Answer

True

Answer

False

Question 34

In 1915, Albert Einstein published what amounted to an explanation for what gravity is and why it exists. This is a scientific theory.

Accepted Answer

True

Answer

False

Question 35

Which of the following are scientific hypothesis? (check all that apply)

Accepted Answer

Tides are caused by the gravitational forces exerted by the Moon on the Earth

Accepted Answer

Chlorophyll makes grass green

Answer

Extraterrestrial life exists on other planets

Question 36

Your drive your jet boat 900 meters in one minute. What is the average speed of the boat?

Accepted Answer

15 m/s

Answer

30 m/s

Answer

900 m/s

Answer

15 mph

Question 37

In 2.0 seconds, a car increases its speed from 60 km/h to 65 km/h while a bicycle goes from rest to 5 km/h in the same amount of time. Which has the greater acceleration?

Accepted Answer

both have the same acceleration

Answer

bike

Answer

car

Question 38

Consider a freely falling object dropped from rest. What is its speed at the end of 5 seconds?

Accepted Answer

50 m/s

Answer

5 m/s

Answer

10 m/s

Question 39

A heavy object and a light object are dropped from rest at the same time in a vacuum. The heavy object reaches the ground..

Accepted Answer

at the same time as the light object

Answer

later than the light object

Answer

sooner than the light object

Question 40

If the mass of a sliding block is tripled at the same time that the net force on the block is tripled, how does the resulting acceleration compare to the original acceleration?

Accepted Answer

the acceleration is the same as the orginal

Answer

the acceleration is 3 times the original

Answer

not enough info

Answer

the acceleration is 1/3 of the original

Question 41

A cart full of sand is being pulled by a constant force. More sand is dropped onto the cart, doubling the mass. What happens to the acceleration of the cart?

Accepted Answer

it is halved

Answer

not enough info

Answer

it is doubled

Answer

it remains constant

Question 42

The net force acting on any object moving at a constant velocity is zero.

Accepted Answer

True

Answer

False

Question 43

What TWO principal factors affect the force of air resistance on an object?

Accepted Answer

frontal surface area

Accepted Answer

speed

Answer

mass

Answer

gravity

Question 44

A book is resting on a table. IF the action force is the Earth pulling downward in the book, what is the reaction force?

Accepted Answer

the book pulling upward on the Earth

Answer

the book pushing down on the table

Answer

the book pulling upward on the table

Answer

the table pushing upward on the book

Question 45

A skydiver who weighs 500 N reaches terminal velocity at 90 km/h. The air resistance on the skydiver at that point is...

Accepted Answer

500 N

Answer

not enough info

Answer

590 N

Answer

410 N

Question 46

A truck has a head-on collision with a motorcycle. Compared to the impact force on the Mack truck, the impact force on the motorcycle is...

Accepted Answer

equal to the force on the truck

Answer

greater than the force on the truck

Answer

less than the force on the truck

Question 47

The reason a 10 kg rock falls no faster than a 5 kg rock in free fall is the

Accepted Answer

force/mass ratio is the same for both

Answer

10-kg rock has greater acceleration

Answer

force of gravity is the same for both

Answer

5-kg rock has greater acceleration

Question 48

What is the magnitude of the net force that acts on a 10-N falling object when it encounters 4 N of air resistance? 4

Accepted Answer

6 N

Answer

4N

Answer

10 N

Answer

0 N

Question 49

When you rub your hands together, you can push harder with one hand than with the other.

Accepted Answer

False

Answer

True

Question 50

A rope hanging from a tree holds a 20-N bag of apples at rest. The tension on that rope is 20 N.

Accepted Answer

True

Answer

False

Question 51

What name is given to the property by which objects resist change in motion?

Accepted Answer

inertia

Answer

density

Answer

weight

Question 52

Your weight on the moon would be more than it is on Earth.

Accepted Answer

False

Answer

True

Question 53

Mass is ( choose all that apply)

Accepted Answer

a property of matter

Accepted Answer

a measure of inertia

Answer

a force

Question 54

Which objects have zero acceleration? (choose all that apply)

Accepted Answer

a skydiver who has reacher terminal velocity

Accepted Answer

an object in mechanical equilibrium

Accepted Answer

a rail car moving at a constant velocity

Accepted Answer

A rail car at rest

Answer

a car traveling around a circular track at constant speed

Question 55

A constant net force on a wagon produces...

Accepted Answer

a constant acceleration

Answer

a constant velocity

Answer

neither

Answer

both

Question 56

The force of gravity does work on a bowling ball rolling along a lane.

Accepted Answer

False

Answer

True

Question 57

When a driver applies the brakes to maintain his vehicle at a constant speed going downhill, the potential energy of the car decreases. What becomes of the "lost" potential energy?

Accepted Answer

it transforms to thermal energy

Answer

it transforms to kinetic energy

Answer

it disappears

Question 58

A diver standing on the high dive has a potential energy of 10,000 J. As he dives, the potential energy is converted to kinetic energy. When he is halfway through his dive, what is the magnitude of his potential energy? What about his kinetic energy? (ignore air resistance)

Accepted Answer

5,000 J and 5,000 J

Answer

0 J and 5,000 J

Answer

5,000 J and 0 J

Answer

0 J and 10,000 J

Question 59

Which physics principle best illustrates the usefulness of automobile airbags?

Accepted Answer

Impulse-momentum relationship

Answer

Conservation of Momentum

Answer

Work-energy theorem

Answer

Conservation of energy

Question 60

A Mack truck and a motorcycle collide on the highway. Which undergoes the greater change in momentum during the time of contact?

Accepted Answer

both undergo the same change in momentum

Answer

Mack truck

Answer

Motorcycle

Question 61

A car moves 4 times as fast as another identical car. Compared with the slower car, the faster car has...

Accepted Answer

16 times the kinetic energy

Answer

12 times the kinetic energy

Answer

8 times the kinetic energy

Answer

4 times the kinetic energy

Question 62

Which requires more work?

Accepted Answer

Both require the same amount of work

Answer

lifitng a 50-N sack vertically 4 meters

Answer

lifting a 100-N sack vertically 2 meters

Question 63

A heavy truck and a small truck roll down a hill side by side. Neglecting friction, at the bottom of the hill, the heavy truck has greater (check all that apply)

Accepted Answer

kinetic energy

Accepted Answer

momentum

Answer

speed

Answer

acceleration

Question 64

A golfer follows through with her club when she is teeing off in order to... (check all that apply)

Accepted Answer

produce greater impulse on the ball

Accepted Answer

produce a greater change in momentum for the ball

Answer

produce a greater force of impact on the ball

Survey of Physical Science Exam #1

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